Journal of Coordination Chemistry (J COORD CHEM)

Publications in this journal

• Article: Synthesis in solvent-free conditions, characterization and biological activity of a new Schiff-base ligand and its Cu(II) complex

  Fikriye Tuncel Elmali, Aysegül Peksel, Nebahat Demirhan
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  ABSTRACT: A new bis-imine Schiff base (N8O2 donor, LH2) has been synthesized by melt condensation of 3-amino-1,2,4-triazole with 1,5-bis(2′-formylphenyl)-1,5-dioksapentane in 2 : 1 molar ratio, in solvent and solvent-free conditions. The ligand has been characterized using FTIR, UV–Vis, 1H NMR, 13C NMR, mass spectra, elemental analysis, and thermal (TGA-DSC) techniques. A new complex of LH2 with Cu(II) has been synthesized in solvent and solvent-free conditions. FTIR, UV–Vis mass spectra, and thermal analysis (TGA-DSC) have been used to characterize the Cu(II) complex. Thermal degradation showed that the final products were black carbon and metallic copper. Distorted octahedral geometry has been observed around CuLH2Cl2 · LH2 and its Cu(II) complex have been screened for in vitro antifungal and antioxidant activities. Antioxidation was determined for their superoxide scavenging and reducing activities. The ligand and its Cu(II) complex have strong antifungal activity against Aspergillus niger. The compounds have significant superoxide anion radical scavenging activity and reducing power against various antioxidant systems in vitro.
  Journal of Coordination Chemistry 01/2548; No. 15(10 August 2009):2548-2555.
• Article: Coordination complexes based on 4-aminobenzonitrile with different dimensionalities

  Rajendar Nasani, Manideepa Saha, Shaikh M. Mobin, Alexander M. Kirillov, Suman Mukhopadhyay
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  ABSTRACT: Reaction of 4-aminobenzonitrile with different transition metal ions in the presence of chloride provides metal complexes of different dimensionalities. Whereas platinum forms a 0-D mononuclear complex {[PtCl2(4-ABN)2} 1, three new coordination polymers {[Zn(4-ABN)2(H2O)2](ClO4)2} n 2, {[Cu(4-ABN)2(MeOH)2](ClO4)2} n 3, and {Cd(4-ABN)Cl2} n 4 have been synthesized and characterized.Complexes 2 and 3 crystallize in 1-D polymeric chains, whereas 4 forms a 3-D coordination network, based on fused 12-membered rings of cadmium and chloride. A topological analysis of 4 reveals a uninodal five-connected network with the point (Schlafli) symbol of (44 × 66) and the nov (5/4/08) topology. All the isolated complexes were characterized by IR, elemental, and X-ray single crystal structural analyses. Complexes 1, 2, and 4 were additionally characterized by NMR spectroscopy.
  Journal of Coordination Chemistry 04/2013; 66(9):1602-1615.
• Article: Molecular structures of antitumor active Pd(II) and Pt(II) complexes of N,N-donor benzimidazole methyl ester

  N.T. Abdel-Ghani a & A.M. Mansour
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  ABSTRACT: [MLCl2] � zH2O�C2H5OH (L¼2-[(1H-benzimidazol-2-ylmethyl)-amino]-benzoic acid methyl ester; M¼Pd, z¼2; M¼Pt, z¼0) complexes were synthesized as potential antitumor compounds and their structures were elucidated by elemental analysis and spectroscopic data. Theoretical molecular structures were investigated by the DFT/B3LYP method using the LANL2DZ basis set. The calculated molecular parameters, bond distances, and angles, revealed a square-planar geometry around the metal through pyridine-type nitrogen (Npy) of benzimidazole and the secondary amino group (NHsec). The lone pair interaction LP(2)O48 of ethanol with anti-bonding ��(C(16)–H(29)) is an evidence for charge transfer from ethanol to platinum. The electronic movement and assignment of electronic spectra were carried out by TD-DFT calculations. The ligand in comparison to its metal complexes was screened for antibacterial activity and cytotoxicity.
  Journal of Coordination Chemistry 12/2012; 65(5):763-779.
• Article: Synthesis, crystal structure, and spectroscopic behavior of 8-hydroxyquinolato oxoalkoxo vanadium(V) complexes

  Mostafa M. Amini, Gholamhossein Mohammadnezhad, H. R. Khavasi
  Journal of Coordination Chemistry 08/2012; 65(16):2945.
• Article: Review of the Synthesis and Properties of Colloidal Quantum Dots: The Evolving Role of Coordinating Surface Ligands

  Christopher M. Evans, Laura C. Cass, Kathryn E. Knowles, Daniel B. Tice, Robert P. H. Chang, Emily A. Weiss
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  ABSTRACT: This review highlights the developments in synthetic methods for colloidal quantum dots that have expanded the range of achievable sizes, shapes, materials, and surface chemistries over the past 30 years, and how these methods have enabled optimization of properties like photoluminescence quantum yield, monodisperse size distributions, and conductivity in the solid state.
  Journal of Coordination Chemistry 06/2012; 65(13):2391-2414.
• Article: Organotin(IV) complexes with pyruvic acid phenylhydrazone (HPAPD): Synthesis, spectral characterization and in vitro antibacterial activity

  M. A. Salam, M. A. Affan, Fasihuddin B. Ahmad, Md. Arafath
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  ABSTRACT: The reaction of pyruvic acid phenylhydrazone [HPAPD, (1)] with organotin(IV) chloride(s) leads to the formation of five new organotin(IV) complexes: [MeSnCl2(PAPD)] (2), [BuSnCl2(PAPD)] (3), [PhSnCl2(PAPD)] (4), [Me2SnCl(PAPD)] (5), and [Ph2SnCl(PAPD)] (6). The ligand [HPAPD, (1)] and its organotin(IV) complexes (2–6) have been characterized by CHN analyses, molar conductivity, UV-Vis, FT-IR, 1H, 13C, and 119Sn NMR spectral studies. Spectroscopic data suggested that HPAPD is coordinated to tin(IV) through the carboxylato-O and azomethine-N as a mononegative bidentate chelating agent; the coordination number of tin is five. Compound 1 and its organotin(IV) complexes (2–6) were assayed for in vitro antibacterial activity against Staphylococcus aureus, Bacillus subtilis, Enterobacter aerogenes, Escherichia coli, and Salmonella typhi. The screening results show that 2–6 have better antibacterial activity than 1 and that 6 exhibits significantly better activity than 2–5.
  Journal of Coordination Chemistry 05/2012; 65:1999-2007.
• Article: Synthesis, spectroscopic characterization, antineoplastic, in vitro-cytotoxic, and antibacterial activities of mononuclear ruthenium(II) complexes

  SREEKANTH THOTA*y, MOHAMMAD IMRANy, MANASA UDUGULAy, SUBHAS SOMALINGAPPA KARKIz, NARASIMHA KANJARLAy, RAJESHWAR YERRAy, JAN BALZARINIx, ERIK DE CLERCQx
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  ABSTRACT: The synthesis, antineoplastic, cytotoxic, and antibacterial activities of Ru(II) complexes derived from quinazoline and thiosemicarbazone ligands are reported. These complexes have been prepared and characterized by UV-Vis, IR, 1H-NMR, FAB-mass spectroscopy, and elemental analysis. The ligands and resulting complexes were subjected to in vivo antineoplastic activity against a transplantable murine tumor cell line Ehrlich ascites carcinoma (EAC) and in vitro cytotoxic activity against human cancer cell line Molt 4/C8, CEM, and murine tumor cell line L 1210. The ruthenium complexes show promising biological activity especially in decreasing tumor volume and viable ascitic cell counts. These complexes prolonged the life span of mice bearing EAC tumors by 10–52%. In vitro evaluation of these ruthenium complexes revealed cytotoxic activity from 0.29 to 2.9 mmol L�1 against Molt 4/C8, 0.22 to 2.1 mmol L�1 against CEM and 0.42 to 4.7 mmol L�1 against L1210 cell proliferation, depending on the nature of the compound. The metal complexes are more active than the parent ligand and exhibit mild to moderate antibacterial activity.
  Journal of Coordination Chemistry 03/2012; 65(5):823-839.
• Article: Micellar catalysis on picolinic acid promoted hexavalent chromium oxidation of glycerol.

  S. K. Ghosh, A. Basu, R. Saha, A. Ghosh K. Mukherjee, B. Saha
  Journal of Coordination Chemistry 01/2012;
• Article: Synthesis, crystal structure, and antibacterial activity of mononuclear nickel(II) and cobalt(III) Schiff-base complexes.

  T. Kumar, M. Ghosh, M. Fleck, G. Pilet, D. Bandyopadhyay
  Journal of Coordination Chemistry 01/2012; 65(65):20612-2622.