Journal of Inorganic and Organometallic Polymers and Materials (J INORG ORGANOMET P)

Publications in this journal

• Article: Assessment of Nanoparticle Release from Polyamide 6- and Polypropylene-Silicon Composites and Cytotoxicity in Human Lung A549 Cells

  Irfan.A, Sachse.S, Njuguna.J, Pielichowski.K, Silva.F, Zhu.H
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  ABSTRACT: The steady increase in application of nanoparticles in novel products over the past decade has triggered concerns about the impact of nanoparticles on human health. This study assessed the release of nanoparticles from polyamide 6 (PA6)- and polypropylene (PP)-silicon composites during drilling test and tested the toxicity of the released nanoparticles. The PA6 and PP polymers and their respective polymer–silicon composites, each containing 5 wt% of nano-fillers (silica nanoparticles, organically modified montmorrillonite) or larger fillers (glass fiber or foam glass crystal materials) were studied. It was shown that PA6-based materials generated up to ten times more nanoparticles than the PP-based materials. The polymer-silica nanocomposites generated the highest amount of nanoparticles, whilst the polymer-montmorrillonite composites and neat polymers generated the least. In human lung epithelial A549 cells, the toxicity for PA6-based nanoparticles appeared to be higher than PP-based nanoparticles. This study suggests that the assessment of nanoparticle release integrated with a nanoparticle toxicity study could reveal the potential risk of human exposure at certain stages of the product life cycle and the development of safe products.
  Journal of Inorganic and Organometallic Polymers and Materials 03/2013;
• Article: Patterning of Protein/Quantum Dot Hybrid Bionanostructures.

  Vikas Nandwana, Rubul Mout, Yi-Cheun Yeh, Stefan Dickert, Mark T Tuominen, Vincent M Rotello
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  ABSTRACT: Here we demonstrate patterning of protein/quantum dot hybrid bionanostructures via electrostatic assembly of engineered negatively charged fluorescent protein with positively charged CdSe/ZnS QD patterns formed through e-beam lithography and post-patterning modification with cationic ligands.
  Journal of Inorganic and Organometallic Polymers and Materials 01/2013; 23(1):227-232.
• Article: A Conjugated Organometallic Polymer with Truxene Antennas as Side Arms; A Multiluminescent Material with Evidence for Intrachain MO Couplings

  Bin Du, Daniel Fortin, Pierre D. Harvey
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  ABSTRACT: A polymer ([Pt]-ZnP)n (ZnP = bis-meso-(hexahexyltruxene)zinc(II) porphyrin; [Pt] = transbis( phenylacetylene)bis(tributylphosphine)platinum(II)) was prepd. from bis-meso-(hexahexyltruxene)zinc(II) porphyrin and trans-dichlorobis(tributylphosphine)platinum(II) and exhibits fluorescence and phosphorescence from truxene (Tru) and ZnP, and phosphorescence from [Pt] all at once. Evidence for singlet and triplet energy transfer Tru ® ZnP (slow), [Pt] ® ZnP (fast) is provided indicating inter-chromophore interactions. DFT computations indicate strong MO coupling between [Pt] and ZnP.
  Journal of Inorganic and Organometallic Polymers and Materials 01/2013; 23(1):81-88.
• Article: Synthesis and Characterization of SiC(Ti) Ceramics Derived from a Hybrid Precursor of Titanium-Containing Polycarbosilane

  Zhaoju Yu, Junying Zhan, Cong Zhou, Le Yang, Ran Li, Haiping Xia
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  ABSTRACT: A hybrid precursor of titanium-containing polycarbosilane is prepared by blending hyperbranched polycarbosilane (HBPCS) and tetrabutyl titanate (TBT), and then crosslinking at 160°C, followed by pyrolyzing at high temperatures to afford SiC(Ti) ceramics. The crosslinking reaction of HBPCS–TBT hybrid precursor is investigated by FT-IR, solid state 29Si MAS NMR, and GPC. The results indicate that the crosslinking reaction takes place via condensation between the Si–H bond of HBPCS and butoxy group in TBT leading to the formation of Si–O–Ti bonds. The thermal properties and structural evolution of crosslinked hybrid precursor and the crystallization behavior and composition of final ceramics are investigated by TGA, FT-IR, Raman spectroscopy, XRD and energy dispersive elemental analysis. The ceramic yield of hybrid precursor is significantly enhanced by introduction of TBT. The ceramic yield at 1,400°C is 83% for HBPCS–TBT-5 as measured by TGA. The Ti-content in the ceramic is controlled by varying the TBT content in the feed. The SiC(Ti) ceramic is amorphous at 900°C. The characteristic peaks of β-SiC and TiC appear until 1,600°C. The growth of SiC crystals is inhibited by the formation of TiC. KeywordsSilicon carbide–Hyperbranched polycarbosilane–Tetrabutyl titanate–Hybrid precursor
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):412-420.
• Article: Synthesis and Characterization of Lanthanum Zirconate Nanocrystals Doped with Iron Ions by a Salt-Assistant Combustion Method

  Yunshan Bai, Lude Lu, Jianchun Bao
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  ABSTRACT: Nanocrystalline (La x Fe1−x )2Zr2O7 series solid solutions were prepared by a convenient salt-assisted combustion process using glycine as fuel. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The results showed the La ion can be partially replaced by Fe ion. The partial substituted products were still single-phase solid solutions and the crystal form remained unchanged. TEM images reveal that the products are composed of well-dispersed square-shaped nanocrystals. The method provides a convenient and low-cost route for the synthesis of nanostructures of oxide materials. The catalytic property of (La x Fe1−x )2Zr2O7 can be measured by the change of catalytic degradation rate of Methyl orange. The results show that the catalytic property of La x Fe2−x Zr2O7 is significant, and it has good application prospects as photocatalyst. KeywordsSoft chemistry–(La x Fe1−x )2Zr2O7 –Nanocrystalline–Pyrochlore–Catalytic property
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):590-594.
• Article: Electrocatalytic Activity of Carbon Nanotube-Supported Pt–Cr–Co Tri-Metallic Nanoparticles for Methanol and Ethanol Oxidations

  Hongzhou Dong, Lifeng Dong
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  ABSTRACT: In this work, platinum (Pt), Pt–Cr, Pt–Co, and Pt–Cr–Co nanoparticles were synthesized on single-walled carbon nanotubes, and their effects on electrocatalytic activity for methanol and ethanol oxidations were investigated using cyclic voltammetry and electrochemical impedance spectroscopy. In comparison to Pt, Pt–Cr, and Pt–Co, Pt–Cr–Co nanoparticles demonstrate better catalytic characteristics for methanol and ethanol oxidations, such as forward peak current density, resistance to carbon monoxide poisoning, peak potential for oxidation, and charge transfer resistance. This study indicates that Pt-trimetallic nanoparticles could be desirable catalyst candidates for both direct methanol and ethanol fuel cells. KeywordsFuel cell–Methanol–Ethanol–Electrochemical impedance spectroscopy–Cyclic voltammetry
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(4):754-757.
• Article: Synthesis and Characterization of Titania Nanoparticles on the Surface of Microporous Perlite Using Sol–Gel Method: Influence of Titania Precursor on Characteristics

  Mohammad Hossein Habibi, Mahmoud Zendehdel
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  ABSTRACT: Titania colloidal nanoparticles have been successfully fabricated by a very simple and inexpensive sol–gel spin-coating method on the surface perlite granules. This was achieved by adjustment of the sol–gel parameters such as the precursors, spin-coating time and heating processes. Five samples were prepared using different titania e.g. Millennium, Degussa P25, titania nanoparticle, sol–gel derived titania and rutile nanoparticles precursors. Titania nanoparticles were grown on perlite granules by the controlled immobilization of titania. X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were employed to investigate the growth and morphology of the titania coating on perlite granules. The results showed surface modification of perlite granules with uniform coating of titania on supports and confirmed that the coatings are composed of aggregated crystallites of 11–61nm in diameter, good compositional uniformity and good adherence of the fabricated titania layer on perlite granules. The synthesis of adsorptive supports for immobilization of powdery photocatalysts would show significant improvements in both practical use and degradation efficiency of photocatalysis in environmental protection. KeywordsTitania immobilization–Microporous perlite–Perlite granules–Millennium–Degussa P25–Surface modification
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):634-639.
• Article: Structure and Spectral Characteristics of 3D-Supramolecular Coordination Polymers Based on Copper Cyanide and Dimethylquinoxaline

  Safaa El-din H. Etaiw, Mohamed E. El-Zaria, Tarek A. Fayed, Safaa N. Abdou
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  ABSTRACT: The reactions of K3[Cu(CN)4], R3SnCl (R=Me or ph) and 2,3-dimethyl quinoxaline (dmqox) in H2O/acetonitrile media at room temperature afford the 3D-supramolecular coordination polymers (SCP) 3¥ [ \textCu 2 ( \textCN ) 2 \textdmqox ] ^{ 3}_{\infty } \left[ {{\text{Cu}}_{ 2} \left( {\text{CN}} \right)_{ 2} {\text{dmqox}}} \right] , 1 and 3¥ [ \textCu 2 ( \textCN ) 4 ( \textPh 3 \textSn ) 2 \textdmqox ] ^{ 3}_{\infty } \left[ {{\text{Cu}}_{ 2} \left( {\text{CN}} \right)_{ 4} \cdot \left( {{\text{Ph}}_{ 3} {\text{Sn}}} \right)_{ 2} \cdot {\text{dmqox}}} \right] , 2. The structure of the tin free 1 consists of parallel zigzag chains connected by dmqox to form 2D-sheets containing hexagonal 18-atom fused Cu6(CN)4(dmqox)2 rings. The interwoven sheets along the a axis are close packed by extensive H-bonds developing 3D-network structure. The structures of 1 and 2 are investigated by elemental analysis IR, NMR and mass spectra. The ESI+ and ESI− mass spectra of 2 support its polymeric nature while the ESI+ mass spectrum confirms the expected M. W. suggested by elemental analysis. The 13C-NMR spectrum of 2 supports the fact that the network structure of 2 contains the rhombic [Cu2(μ3-CN)2] motif. The structure of 2 was compared with the structure of the reported prototype 3¥ [ \textCu 2 ( \textCN ) 4 ( \textPh 3 \textSn ) 2 \textqox ] ^{ 3}_{\infty } \left[ {{\text{Cu}}_{ 2} \left( {\text{CN}} \right)_{ 4} \cdot \left( {{\text{Ph}}_{ 3} {\text{Sn}}} \right)_{ 2} \cdot {\text{qox}}} \right] as well as the other related structures. KeywordsSupramolecular coordination polymers–Copper cyanide–Dimethylquinoxaline–Organotin polymers
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):480-491.
• Article: Study on the Performance of Zn,N/TiO2 Anode Film and Co-Sensitization in DSSC

  Jingchang Zhang, Chengyu Fu, Xiuying Yang, Weiliang Cao
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  ABSTRACT: Zn,N-TiO2 powder was prepared using TiCl4 as the precursor. XRD, TEM and CV characterizations show Zn,N have been doped into nano-crystal TiO2 successfully, and the absorbance range of TiO2 anode red-shift to the visible region. Zn,N doped-TiO2 anode film was first prepared by combined technology. Ultraviolet–Visible (UV–Vis) chararterization proved there is a complementarity in UV–Vis absorbance range between poly (3-dodecylthiophene) (P3DDT) and N719. Solar cell based on Zn,N-TiO2 was first co-sensitized by P3DDT and N719. A solar-to-electric energy conversion efficiency of 3.25% was attained with the system. The photoelectric conversion efficiency, Voc and Jsc have been all increased compare to the single dye-sensitized solar cell. KeywordsZn,N doped-TiO2 film–Poly (3-dodecylthiophene)–N719, P3DDT co-sensitization–DSSC
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(1):43-49.
• Article: Synthesis, Crystal Structures and Fluorescent Properties of Two Bimetallic Coordination Polymers

  Yajuan Li, Lang Liu, Dianzeng Jia, Jixi Guo, Rui Sheng
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  ABSTRACT: Two novel 2D and 3D bimetallic CdIINiII coordination polymers, Cd(2Mpz)(H2O)Ni(CN)4 (I) (2Mpz: 2-methylpyrazine) and Cd(2Epz)(H2O)Ni(CN)4 (II) (2Epz: 2-ethylpyrazine), have been synthesized and characterized by elemental analysis, powder X-ray diffraction, IR spectra, fluorescent spectra, single crystal X-ray diffraction and thermogravimetric analysis. Based on the analysis of structures, it can be found that the Cd(II) ions in the two complexes have the similar octahedral coordination geometry of CdN5O, which are linked by [Ni(CN)4]2− units at the equatorial plane to form 2D sheet layers [CdNi(CN)4] n . However, it’s noted that the coordination environment of Ni(II) ions and action of ligands are different. All the Ni(II) ions in I are the five-coordinated pentahedron configuration and 2-methylpyrazine acts as a bridging ligand linking the Cd(II) and Ni(II) ions of the adjacent layers, leading to the 3D metal–organic framework. The structure of II indicates all the Ni(II) ions are the four-coordinated square plane and 2-ethylpyrazine is a terminal ligand coordinated to Cd(II) ions, forming the 2D layer structure. Moreover, the two complexes display significant thermal stability and fluorescent properties. KeywordsCd(II) coordination polymer–Pyrazine derivative–Crystal structure–Cyanide group
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(2):254-260.
• Article: Synthesis of TiO2 Hybrid Molecular Imprinted Nanospheres Linked by Silane Coupling Agent

  Qingzhao Yao, Yuming Zhou
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  ABSTRACT: This article presents work on designing TiO2 hybrid MIP nanospheres via precipitation polymerization using methacrylic acid (MAA) as functional monomer and silane coupling agent 3-(trimethoxysilyl) propylmethacrylate (KH570) as organic–inorganic connective bridge. Hydrogen bond was proved to act between MAA and template bensulfuron-methyl (BSM) for pre- and post-polymerization as testified by infrared spectrometry (IR). Scanning electron microscope (SEM), transmission electron microscope (TEM) and the adsorption kinetics experiments as well as IR were employed for characterization. The results indicated that the TiO2 hybrid MIP nanospheres revealed a more irregular shape and smaller average size compared to organic-only MIP nanospheres. Furthermore, faster adsorption kinetics was achieved, which made it promising in chemical sensor applications.
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 19(4):466-472.
• Article: Synthesis, Structure and Electrochemical Property of a New Three-Dimensional Inorganic–Organic Vanadate Coordination Polymer [Cu2(bbi)2(V4O12)] · 4H2O (bbi = 1,1-(1,4-butanediyl)bis(imidazole))

  Xiuli Wang, Baokuan Chen, Guocheng Liu, Hongyan Lin, Hailiang Hu, Yongqiang Chen
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  ABSTRACT: A new inorganic–organic vanadate coordination polymer [Cu2(bbi)2(V4O12)]·4H2O (bbi=1,1-(1,4-butanediyl)bis(imidazole)) (1) has been synthesized under hydrothermal condition and characterized by elemental analyses, IR spectra and single crystal X-ray diffraction. Structure analysis revealed that the three-dimensional structure of compound 1 is constructed from two-dimensional [Cu(bbi)2]2+ layers linked through {V4O12}4− building blocks. Compound 1 represents the first example of metal-organic frameworks with non-interpenetrated five-connected topological network (46·64) based on Cu(II) as nodes, bbi and {V4O12}4− as mixed spacers. The electrochemical behavior of 1 modified carbon paste electrode (1-CPE) in 1M H2SO4 aqueous solution has been studied.
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 19(2):176-180.
• Article: New Binuclear Complexes with Mixed Ligands and μ2-Phenol Oxygen Bridges: Synthesis Crystal Structures and Magnetism

  Shu-Lin Ma, Shi Ren, Yun Yang
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  ABSTRACT: Two new complexes, [M2(L)2(bpy)2](ClO4)2 [L=methyl salicylate, bpy=2,2′-bipyridine, M=Cu (1) and Zn (2)] have been synthesized and structurally characterized by X-ray structure analyses. The centrosymmetric dimeric structure Two new complexes, [M2(L)2(bpy)2](ClO4)2 [L=methyl salicylate, bpy=2,2′-bipyridine, M=Cu (1) and Zn (2)] have been synthesized and structurally characterized by X-ray structure analyses. The centrosymmetric dimeric structure consists of a binuclear unit, in which M (M=Cu or Zn) atoms are bridged by two phenol oxygen atoms as a μ consists of a binuclear unit, in which M (M=Cu or Zn) atoms are bridged by two phenol oxygen atoms as a μ 2-bridged. The neighboring binuclear units interact with each other by two kinds of weak contacts: one kind is π–π stacking 2-bridged. The neighboring binuclear units interact with each other by two kinds of weak contacts: one kind is π–π stacking by π–σ attraction with an edge-to-face C–H···π interaction, and the second type is a H-bonding interaction, which extends by π–σ attraction with an edge-to-face C–H···π interaction, and the second type is a H-bonding interaction, which extends the binuclear unit into a 3D network. Magnetic measurements confirm that 1 presents a very strong intradinuclear ferromagnetic coupling between the copper(II) ions. the binuclear unit into a 3D network. Magnetic measurements confirm that 1 presents a very strong intradinuclear ferromagnetic coupling between the copper(II) ions. KeywordsMixed ligand- KeywordsMixed ligand- μ-Phenol oxygen bridges-Offset π-stacked-Hydrogen-bond-Crystal structure-Magnetic properties μ-Phenol oxygen bridges-Offset π-stacked-Hydrogen-bond-Crystal structure-Magnetic properties
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 20(1):104-109.
• Article: Simple Directed Material Design Through in Situ Substitution of Proton with Cu+ Ions

  Qi-Bing Bo, Zhong-Xi Sun, Guo-Xin Sun, Allan Holmgren
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  ABSTRACT: A new inorganic–organic hybrid material (C10H8N2H)2(Mo8O26)·2NH4 (1) was prepared under solvothermal conditions (H2O/ethanol), which was then used as a starting material in the synthesis of another material, (C10H8N2Cu)2(Mo8O26)·2NH4 (2). Each compound has been characterized by single-crystal X-ray diffraction, X-ray powder diffraction, elemental analysis, thermogravimetric analysis, fluorescence, FT-IR, and bond valence sum calculations. The comparative study focuses on the transformation and structural change between 1 and 2, which arises from the simple substitution of the proton in 1 with the Cu+ ions. The other surprising feature is that Cu+ ions can not only directly be used to substitute the proton of 1 but also ameliorate its photoluminescence property. It means that 1 appears to have recognizable functional protons in the solid-state structure and, hence, can very well be considered as an ideal precursor agent to design the functional materials with special architectures and photoactive properties.
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 19(4):485-493.
• Article: Syntheses and Characterization of 1D, 2D and 3D Organotin Polymers with Benzimidazole-5,6-dicarboxylic Acid and Trimethyltin Chloride

  Chunlin Ma, Qianli Li, Rufen Zhang
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  ABSTRACT: Three types of di- and trimethyltin(IV) polymers [Me2Sn(C9H4N2O4)]n·4H2O 1, [(Me3Sn)2(C9H4N2O4)]n·H2O 2 and [(Me3Sn)2(C9H4N2O4)]n·CH3OH 3 have been synthesized by the reaction of trimethyltin chloride with benzimidazole-5,6-dicarboxylic acid under three different experimental conditions. All the complexes were characterized by elemental analysis, IR, NMR (1H, 13C, 119Sn) spectroscopy and X-ray crystallography diffraction analysis. The structure analyses reveal that complex 1 has a 1D helical chain in which benzimidazole-5,6-dicarboxylic acid act as a tetradentate (O,O-chelation) ligand coordinating to dimethyltin (IV) ions, two water molecules take part in the coordination giving seven-coordinated tin centers in the component. Complex 2 and 3 are 2D and 3D corrugated polymers in which the deprotoned acid as tetradentate ligand affords by three oxygen atoms and a nitrogen atom.
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 19(2):208-214.
• Article: Harry R. Allcock – A True Pioneer in the Field of Inorganic and Organometallic Polymers

  Christopher W. Allen
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  ABSTRACT: Selected highlights of the career of Professor Harry R. Allcock are presented. The theme of the interplay of fundamental and applied chemistry, a hallmark of Dr. Allcock’s research program, is exemplified by discussions of the mechanistic and synthetic studies of phosphazene polymerization followed by applications in the areas of biomedical materials and solid state conductivity.
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 16(4):273-276.
• Article: Structural Pitstops and Turnoffs on the Way to the Birefringent 2-D Layer Structure (M=Cu, Ni)

  Neil D. Draper, Michael J. Katz, Raymond J. Batchelor, Daniel B. Leznoff
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  ABSTRACT: The reaction of N,N,N′,N′-tetramethylethylenediamine (tmeda) and NiCl2 with the soft, Lewis acidic Hg(CN)2 and HgCl2 in ethanol formed the 2-D layer structure {(tmeda)Ni[Hg(CN)2]2}[HgCl4] (1), isostructural to the Cu(II) analogue. Complex 1 crystallizes in the tetragonal, non-centric P[`4] \text 21P \overline{4} {\text{ }}2_{1}m space group and contains a 2-D cationic layer of {(tmeda)Ni[Hg(CN)2]2}2+ units in which the six-coordinate Ni(II) centres are bridged by four Hg(CN)2 groups and capped by a tmeda ligand. This array is interspersed with a layer of [HgCl4]2− anions, which form bridging Hg–Cl bonds with the Hg(CN)2 units. The formation of 1 is very sensitive to reaction conditions; the addition of water to the mixture yields the related “structural pitstop” 2-D array {(tmeda)Ni(H2O)[Hg(CN)2]}{[Hg(CN)Cl]2Cl2}H2O (2), in which the halide migration among Hg(II) centres is incomplete. The larger zero-field splitting D-values of 6.91(1)cm−1 for 1 vs. 2.85(4)cm−1 for 2 indicate that some weak antiferromagnetic interactions are likely present in 1. The reaction of tmeda/Cu(ClO4)26H2O with Hg(CN)2 yields [Cu(tmeda)(μ-OH)(ClO4)]2[Hg(CN)2(H2O)2][Hg(CN)2] (3) which is composed of [Cu(tmeda)(μ-OH)(ClO4)]2 dimers in which the ClO4-\hbox{ClO}_4^{-} anions cis-bridge the copper(II) centres in the axial positions as well as bind to two adjacent Hg(CN)2 moieties; the perchlorate anion is acting as a rare η4–μ4–ClO4 ligand. N-cyano interactions also exist between the Hg(II) centres; overall, a 2-D corrugated sheet structure which stacks via Cl–O–Hg bridges to yield a 3-D array is formed. The χM T value for 3 decreases with decreasing temperature; a maximum in χM vs. T at 20K is also observed. This is consistent with antiferromagnetic interactions within the copper(II) dimer, which were fit with the Bleaney-Bowers model to yield J=−23.1(1)cm−1, g=2.113(5) and a paramagnetic impurity P=0.017(1).
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 15(4):447-458.
• Article: Synthesis of a Novel Zirconium Oligostyrenylphosphonate-Phosphate and its Application in Asymmetric Epoxidation

  Yunfei Luo, Xiangkai Fu, Xiaochuan Zou, Changwei Wang, Xiaoyan Hu, Ziyong Jia, Huaizhi Zhang
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  ABSTRACT: The layered crystalline zirconium oligostyrenylphosphonate-phosphate (LCZSPP) was synthesized in the presence of HF for the first time, and this compound was well characterized by FT-IR, TG, SEM, TEM, XPS and XRD. The LCZSPP possessed high thermal stability by TG. SEM and TEM demonstrated that this compound is a typically layered crystalline compound with basically regular shape. XRD data also showed that the interlayer spacing (10.65Å) of the sample was 3.01Å more than the α-ZrP (7.64Å). Moreover, chiral Jacobsen’s catalyst was axially immobilized onto LCZSPP by a diamine linker group. All the synthesized heterogeneous catalysts exhibited excellent reactivity and enantioselectivity in the asymmetric epoxidation of simple olefins. KeywordsZirconium oligostyrenylphosphonate-phosphate–Interlayer spacing–Layered crystalline compound–Heterogeneous catalysts–Asymmetric epoxidation
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(2):276-282.
• Article: Solvothermal Synthesis, Crystal Structure and Magnetic Properties of a Novel 3D 2-Fold Interpenetrated Coordination Polymer [Co2(hfipbb)2(dps) (H2O)]n

  Ya-Pan Wu, Feng Fu, Long Tang, Xiang-Yang Hou, Zhu-Lian Zhang
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  ABSTRACT: AbstractA novel 3D two-fold interpenetrated coordination polymer, [Co2(hfipbb)2(dps)(H2O)]n (1) [H2hfipbb=4,4′-(hexafluoroisopropylidene) bis(benzoic acid), dps=4,4′-dipyridylsulfide], has been synthesized by solvothermal reaction of Co(OAc)2·4H2O, dps and H2hfipbb in the presence of KOH, and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. The structure determination reveals that 1 exhibits a 3D two-fold interpenetrated (3, 4)-connected network with (83)2(85·10) topology. In addition, the thermogravimetric analysis and magnetic behavior of 1 were also studied. Graphical AbstractA novel 3D two-fold interpenetrated coordination polymer, [Co2(hfipbb)2(dps) (H2O)]n (1) has been synthesized and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. Furthermore, thermogravimetric analysis and the magnetic properties of complex 1 were also studied. KeywordsCo(II) coordination polymer–Crystal structure–Interpenetration–Magnetic properties
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):595-601.
• Article: Studies on Ambient Cured Biobased Mn(II), Co(II) and Cu(II) Containing Metallopolyesteramides

  Fahmina Zafar, Hina Zafar, Eram Sharmin, S. M. Ashraf, Sharif Ahmad
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  ABSTRACT: In this paper linseed oil based metallopolyesteramides (Mn(II)-/Co(II)-/Cu(II)-LPEA) containing metals [with half filled (d 5) and partially filled (d 7 and d 9) d orbitals] were synthesized via green route for the application of eco-friendly protective green material. This paper also described the role of occupancy of d orbitals on the performance of such polymers. The synthesis reaction was carried out in situ through condensation polymerization among linseed fatty amide diol (HELA), phthalic anhydride and respective metal acetates [M (OCOCH3)2; M=Mn(II), Co(II), Cu(II); different mole ratios] in absence of any harmful organic solvent. The structural determination (FTIR, 1H-NMR and 13C-NMR), curing, thermal, physico-chemical, physico-mechanical, anticorrosive/chemical resistance, antibacterial properties of Mn(II)-/Co(II)-/Cu(II)-LPEA were carried out. The curing mechanism of the resin was confirmed by the comparison of FTIR spectra of uncured and cured resin. The curing mechanism of Mn(II)-/Co(II)-/Cu(II)-LPEA is found to be contrary to that of reported oil based polymer that involves the lipid autoxidation (slow process) in which driers are required to speed up the room temperature curing process. The incorporation of metals in Mn(II)-/Co(II)-/Cu(II)-LPEA improved the thermal stability as compared to virgin linseed oil based polyesteramide (LPEA). Mn(II)-/Co(II)-/Cu(II)-LPEA also show excellent antibacterial performance against Staphylococcus aureus and Escherichia coli. The observed diversity in material properties suggests that Mn-LPEA may be useful as an eco-friendly protective green material with thermal stability up to 320–330°C. KeywordsLinseed oil–Metal containing polyesteramide–Curing–Spectra–Thermal–Antimicrobial
  Journal of Inorganic and Organometallic Polymers and Materials 05/2012; 21(3):646-654.