Polyhedron Journal Impact Factor & Information

Publisher: Elsevier

Journal description

Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in the major areas of inorganic and organometallic chemistry. Subjects covered include: synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis of organic compounds. In addition Polyhedron publishes specially commissioned review articles (Polyhedron Reports) and collections of original research papers Polyhedron Symposia-in-Print) of appropriate timeliness.Papers concerned solely with stability constants determined by potentiometric titration data unsupported by other e.g. spectroscopic techniques will not be acceptable nor will solvent extraction data unless supported by other data of interest to inorganic chemists.

Current impact factor: 2.05

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 2.047
2012 Impact Factor 1.813
2011 Impact Factor 2.057
2010 Impact Factor 2.033
2009 Impact Factor 2.207
2008 Impact Factor 1.801
2007 Impact Factor 1.756
2006 Impact Factor 1.843
2005 Impact Factor 1.957
2004 Impact Factor 1.586
2003 Impact Factor 1.584
2002 Impact Factor 1.414
2001 Impact Factor 1.2
2000 Impact Factor 1.036
1999 Impact Factor 1.116
1998 Impact Factor 1.335
1997 Impact Factor 1.235
1996 Impact Factor 1.324
1995 Impact Factor 1.013
1994 Impact Factor 1.081
1993 Impact Factor 1.226
1992 Impact Factor 1.287

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.95
Cited half-life 7.20
Immediacy index 0.40
Eigenfactor 0.02
Article influence 0.35
Website Polyhedron website
Other titles Polyhedron
ISSN 0277-5387
OCLC 7590197
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Elsevier

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-print allowed on any website or open access repository
    • Voluntary deposit by author of authors post-print allowed on authors' personal website, arXiv.org or institutions open scholarly website including Institutional Repository, without embargo, where there is not a policy or mandate
    • Deposit due to Funding Body, Institutional and Governmental policy or mandate only allowed where separate agreement between repository and the publisher exists.
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
    • Set statement to accompany deposit
    • Published source must be acknowledged
    • Must link to journal home page or articles' DOI
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: A hexatopic C3-symmetrical 5,5′,5″-(((benzene-1,3,5-triyltris(azanediyl))tris(carbonyl))tris-(azanediyl))triisophthalic acid (H6-1) linker containing tri-urea groups has been designed and synthesized through the reaction between 1,3,5-benzenetriisocyanate and aniline, which was employed to construct a new copper(II) metal–organic framework (MOF Cu-TUH) under the solvothermal reaction with Cu(NO3)2 in N,N-dimethylformamide. As expected, single crystal X-ray diffraction study reveals that the MOF Cu-TUH is composed of 3D packing of nanosized cuboctahedral, truncated tetrahedral, and truncated octahedral cages with a (3,24)-connected rht-topology. Furthermore, the preliminary gas uptake investigations of the activated MOF were conducted to evaluate its application in the area of gas storage and purifications.
    Polyhedron 10/2015; 99. DOI:10.1016/j.poly.2015.06.001
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    ABSTRACT: The reaction of mesitylamine (2,4,6-Me3C6H2NH2) with two equivalents of imidoylchloride, ArNC(Cl)Me (Ar = 2,4,6-Me3C6H2 or 2,6-iPr2C6H3) in the presence of Et3N yields neutral [N,N′] chelating ligands, [2,4,6-Me3C6H2N{C(Me)N(2,4,6-Me3C6H2)}2] (L1) and a pair of ligand isomers; symmetrical [2,4,6-Me3C6H2N{C(Me)N(2,6-iPr2C6H3)}2] (L2a) & unsymmetrical [2,6-iPr2C6H3NC(Me)N(2,6-iPr2C6H3)C(Me)N(2,4,6-Me3C6H2)] (L2b). An exclusive synthesis of the unsymmetrical isomer L2b has also been optimized by the reaction of a preformed amidine (2,6-iPr2C6H3)NH{C(Me)N(2,6-iPr2C6H3)} with the mesityl imidoylchloride. The three ligands have been thoroughly characterized by spectroscopic and X-ray diffraction methods (for L2a and L2b). The reaction of equimolar quantities of L1 with CoCl2·6H2O, NiBr2·xH2O, Cu(NO3)2·3H2O yields the corresponding mononuclear complexes, L1·CoCl2 (1), L1·NiBr2 (2) and L1·Cu(NO3)2 (3). Similarly, reaction of unsymmetrical ligand isomer L2b with CoCl2·6H2O, NiBr2·xH2O, or CuCl2 affords the complexes L2b·CoCl2 (4), L2b·NiBr2 (5) and L2b·CuCl2 (6), respectively. The solid state structures of complexes 1–6 have been investigated by single crystal X-ray structural analysis.
    Polyhedron 10/2015; 99. DOI:10.1016/j.poly.2015.06.015
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    ABSTRACT: Two new water soluble trinuclear copper(II) complexes, [Na6(H3O)4][Cu3(cbal)3(μ3-OH)(H2O)3]4(ClO4)6·3H2O (1) and [K(H2O)2][Cu3(cbal)3(μ3-OH)(H2O)]·3.75H2O (2) have been synthesized in good yield via the reaction of an unsymmetrical amino dicarboxylic ligand, N-(2-carboxybenzomethyl)-β-alanine (H2cbal), Cu(ClO4)2·6H2O and NaOH/K2CO3 in methanol at room temperature. Complexes 1 and 2 have been characterized by elemental analysis, room temperature magnetic susceptibility measurements, FTIR, UV–Vis, mass spectrometry and single crystal X-ray crystallography. Both complexes contain a partial cubane [Cu3O4] core consisting of the trinuclear [{Cu(cbal)}3(μ3-OH)(H2O)3]− and [{Cu(cbal)}3(μ3-OH)(H2O)]− unit, respectively. While the X-ray crystal structure of complex 1 reveals that the three copper(II) ions are in a distorted octahedral geometry forming an equilateral triangle, complex 2 shows that one copper(II) ion is in a distorted square pyramidal geometry, the other copper(II) ions are in a distorted trigonal bipyramidal and a distorted octahedral geometry forming a scalene triangle. Complexes 1 and 2 are investigated for their binding affinity towards CT-DNA in aqueous medium at pH ∼ 7.5 using UV–Vis and fluorescence spectroscopic techniques. DFT calculation has been performed to calculate the Fukui functions at the metal sites as well as HOMOs and LUMOs in complexes 1 and 2 to elucidate the possible binding site with the DNA.
    Polyhedron 10/2015; 99. DOI:10.1016/j.poly.2015.06.018
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    ABSTRACT: Complexes of four non-steroidal anti-inflammatory drugs (NSAIDs): phenylobutazone, nimesulide, diclofenac and meloxicam with Cu2+ have been theoretically investigated using B3LYP/6-31G∗∗ method. The potential copper binding sites for the selected drugs have been found. Complexation of the investigated drug with Cu2+ can significantly change of the ligand geometry as for phenylobutazone and nimesulide or conformation of the drug can be persistent during complexation with Cu2+ as for meloxicam. For the last compound presence of Cu2+ influences the intramolecular OHO hydrogen bond. For the lowest energy complexes interaction of Cu2+ with the drug has been investigated in the frame of Atom in Molecule (AIM) theory.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.005
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    ABSTRACT: Eight novel coordination polymers, {[LnZn(2,3-pydc)2(ox)0.5(H2O)3]·3H2O}n (Ln = Pr 1, Nd 2, Ho 3, Er 4, Yb 5, Sm 6, Eu 7, Tb 8) (2,3-H2pydc = pyridine-2,3-dicarboxylic acid, H2ox = oxalic acid) are synthesized by the hydrothermal method and their structures are determined by single-crystal X-ray diffraction. They are isomorphous and crystallized in the triclinic system, with space group . In crystals, Ln(III) and Zn(II) ions are linked into 2D layers by 2,3-pydc2− ligands adopting two coordination modes, and neighboring layers are bridged into 3D network structure through oxalate ligands in bridging tetradentate coordination mode. The IR, UV–Vis–NIR absorption spectra and emission spectra in the visible and near-infrared (NIR) region of polymers are determined and analyzed. All of polymers exhibit characteristic emission bands of corresponding Ln(III) ions, which should be attributed to sensitization from the d-block (Zn–ligand moiety) and ligands after introducing Zn(II) ion into the system of Ln(III) complexes.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.022
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    ABSTRACT: The reaction of mercury(II) halides with the phosphine–phosphonium salts [PPh2(CH2)2PPh2CH2C(O)C6H4R]Br (R = Br (S1), NO2 (S2) in methanol affords the zwitterionic mercury(II) complexes {HgX2Br(PPh2(CH2)2PPh2CH2C(O)C6H4R)} [R = Br: X = Cl (1), Br (2), I (3); R = NO2: X = Cl (4), Br (5), I (6)]. These complexes were fully characterized by elemental analysis and spectroscopic techniques such as IR, 1H, 31P, and 13C NMR. The structure of complex 4 has been characterized crystallographically. Single crystal X-ray analysis reveals the presence of mononuclear P-coordinated complex containing Hg(II) in a distorted tetrahedral environment. Theoretical studies using density functional theory have been performed on the free ligands (S1 and S2) and their corresponding complexes (1–6). Electronic and structural properties of latter compounds were examined and general trends were derived. The natural bonding orbital calculations have also been carried out to understand the nature of the Hg–P bond. The results show that the interactions between the metal atom and phosphorus atom of phosphine group are mainly an electrostatic interaction. In addition, there is a decrease in the charge distribution on the ligand reflecting electron transfer from the ligand to the metal and halogens atoms. The in vitro antibacterial activities of the entitled compounds were evaluated against Gram-negative as Escherichia coli and Pseudomonas aeruginosa bacteria and Gram-positive as Bacillus subtilis and Staphylococcus aureus and compared with the standard antibacterial drugs.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.019
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    ABSTRACT: Electrocatalytic behavior of 4-(4,6-diaminopyrimidin-2-ylthio) phthalocyaninato cobalt(II) (CoPyPc) when mixed or covalently mixed to multiwalled carbon nanotubes (MWCNTs) is reported. Infra-red spectroscopy was used to confirm amide linkage of the covalently linked nanocomposite. Rotating disk electrode (RDE) and cyclic (CV) voltammetry studies were used for the electrochemical characterization of the prepared phthalocyanine and MWCNT nanocomposite. The electrocatalytic effects of the nanocomposites of the cobalt phthalocyanine derivative were then investigated towards l-cysteine oxidation using both RDE and CV experiments, and the electrocatalytic performance of the covalently linked cobalt phthalocyanine-MWCNT was found to be superior over the mixed nanocomposite.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.05.038
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    ABSTRACT: A well-defined heterobimetallic complex, [Cu4Zr2(μ4-O)2(dmae)4(OAc)8]·2H2O 1 where dmae = N,N-dimethylaminoethanolato and OAc = acetato, has been constructed by the chemical reaction of Cu(OAc)2·2H2O with Zr(dmae)4 in THF. Complex 1 was characterized by its melting point, elemental analysis, infrared spectroscopy, thermogravimetric analysis and single crystal X-ray diffraction. X-ray crystallography shows that complex 1 crystallizes in the monoclinic space group P21/n with the cell dimensions a = 14.7414(5), b = 11.7378(4) and c = 14.8196(5) Å and β = 94.826(2)°. The nature of the thermolysis of 1 showed its aptitude to give a 1:1 CuZrO3:CuO composite oxide material at 575 °C. The high solubility and stability of 1 in common organic solvents suggest its efficacy as a single source precursor (SSP) in the aerosol assisted chemical vapor deposition technique for the formation of a CuZrO3–CuO composite thin film on a soda lime glass substrate under an air atmosphere. Thin film properties, such as crystallinity, identification of deposited phases, surface morphology and chemical compositions were probed by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis, which ascertained the evolution of good quality crystalline hemispherical architecture composite oxide thin films from 1.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.013
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    ABSTRACT: Two polynuclear copper(II) complexes with hydroxido-bridging ligands and polycyanide units, [Cu{Cu(tn)}6(μ2-OH)2(μ3-OH)4Cl2](tcm)4Cl2·2H2O (1) and [{Cu(bpy)}4(OH)4(dca)2](dca)2·bpy·2H2O (2) (tn = NH2(CH2)3NH2; tcm− = [C(CN)3]−, bpy = 2,2′-bipyridyl, dca− = [N(CN)2]−) have been prepared by one-pot reactions. The structure of 1 consists of a centrosymmetric heptanuclear ion [Cu{Cu(tn)}6(μ2-OH)2(μ3-OH)4Cl2]6+. The tcm− and the halide anions which appear as counter-ions in the formula unit, play an important role in the stabilization of the complex since the hydrogen bonding between nitrogen atoms of the tcm− anion and halide anions, and hydrogen atoms of the terminal water molecule and of the bridging hydroxido ligands generate an overall three-dimensional structure. The crystal structure of 2 is essentially built on discrete centrosymmetric tetranuclear [{Cu(bpy)}4(μ2-OH)2(μ3-OH)2(dca)2]2+ units including two μ2- and two μ3-OH ligands. As observed for 1, the dca− anions form a network of hydrogen bonding between their nitrogen atoms and hydrogen atoms of water molecules generating a two-dimensional structure. The magnetic susceptibility data indicate antiferromagnetic interactions in 1 and ferromagnetic ones in 2.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.05.037
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    ABSTRACT: Two novel FeII–ReIV compounds of general formula [FeII(DEA)6][ReIVX6] where DEA = diethylacetamide and X = Cl (1) and Br (2) have been prepared and magnetostructurally characterised. Complexes 1 and 2 are isomorphic ionic salts that crystallise in the trigonal crystal system with space group R(−3). The rhenium(IV) ion in 1 and 2 is six-coordinate with six chloro (1) or bromo (2) ligands building a regular octahedral chromophore. The FeII ion is also six-coordinate, and bonded to six oxygen atoms from six DEA molecules. [FeII(DEA)6]2+ cations and [ReIVX6]2− anions alternate in the crystal lattice of 1 and 2 generating supramolecular structures whose magnetic properties are dominated by the high anisotropy of the six-coordinate iron(II) and rhenium(IV) ions. Variable-temperature magnetic susceptibility data of 1 and 2 are well reproduced by a model of isolated S = 2 (FeII) and S = 3/2 (ReIV) centres with high values of the local zero-field splitting. 1 and 2 are the first examples of hexahalorhenate(IV) salts incorporating FeII complex cations to have been magnetostructurally investigated.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.05.036
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    ABSTRACT: The ability to reliably produce one-dimensional ladder-like coordination polymers that display different crystal packing has been realized. These ladder polymers are produced by incorporating 4,4′-azopyridine (4,4-Azo) molecules as the bridging ligand that act as the stiles or rods for the ladder. The rungs are based upon silver dimers that interact by means of argentophilic forces which were formed with the assistance of the sulfonate anion. Due to the selection of various organosulfonate anions, namely p-toluenesulfonate, trifluoromethanesulfonate, and methanesulfonate, the ability to vary the R-group serves as an easy component to fine tune the overall packing of the polymeric material. The various polymeric structures and their packing will be discussed with special attention to silver–silver distances not only within the ladder but also between nearest neighbor chains. In addition, the change in occupancy of the bridging 4,4-Azo as a function of temperature will be address as this is indicative of pedal motion within the crystal lattice. Lastly, hydrogen bonding patterns in each will also be discussed as a means to produce multi-dimensional frameworks beyond the ladder-like chain.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.008
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    ABSTRACT: Non-metallocene titanium(IV) complexes of 2-hydroxymethylphenol derivatives [O^O]TiCl2 2iPrOH (2–3), which can form a tandem catalytic system with a phenoxy-imine nickel complex (1), were firstly used as an in situ copolymerization catalyst to prepare linear low-density polyethylene (LLDPE) with ethylene as the sole monomer stock and Et2AlCl/Bu2Mg as the cocatalyst. During the reaction, 1/Et2AlCl oligomerized ethylene to linear α-olefins with high activity and selectivity, while 2–3/Et2AlCl+Bu2Mg copolymerized ethylene with the in situ generated α-olefins to LLDPE with high activity (up to 7.4 × 105 g/mol Ti h atm). The influence of the reaction conditions upon the catalytic activity and polymer structures and properties have been researched. The polymers were characterized by differential scanning calorimetry (DSC), high temperature gel permeation chromatography (GPC) and high temperature 13C NMR spectroscopy and they were proven to be LLDPE with ethyl and butyl branches. The compositions of comonomers were tuned efficiently from 2% to 6% by different reaction conditions such as reaction temperature, Ni/Ti molar ratio and Al/(Ni+Ti) molar ratio. The melting points, degree of crystallinity and molecular weights (2.7 × 105–1.5 × 106) also changed correspondingly with the reaction conditions.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.024
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    ABSTRACT: Reaction of 2-aminomethylpyridine with copper(II) acetate and 3,5-dinitrosalicylic acid or 3-methoxysalicylic acid resulted in the formation of molecular complexes [Cu(3,5-dnsal)2(ampy)2] (1) and [Cu(3-MeOsal)2(ampy)2] (2) where ampy = 2-aminomethyl-pyridine, 3,5-dnsal = 3,5-dinitrosalicylate and 3-MeOsal = 3-methoxysalicylate anion. Both complexes contain two molecules of the ampy ligand in equatorial position and the axial positions of the coordination polyhedra are occupied by oxygen atoms of individual anions. The 3,5-dinitrosalicylate anions in (1) are coordinated as phenolato anions while 3-methoxysalicylate anions in (2) are bonded in “classic” way as carboxylato anions. Spectral data reflected the differences in anion bonding and are in good agreement with found structures.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.003
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    ABSTRACT: Three manganese(II) coordination polymers, namely [Mn(L)0.5(bipy)0.5(H2O)]n (1), [Mn2(L)(1,4-bimb)(H2O)2]n (2) and [Mn(L)0.5(4,4′-bibp)0.5(H2O)2]n (3), where H4L = 5,5′-([1,1′-biphenyl]-4,4′-diylbis(oxy))diisophthalic acid, bipy = 4,4′-bipyridine, 1,4-bimb = 1,4-bis(imidazol-1-ylmethyl) benzene and 4,4′-bibp = 4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl, have been successfully constructed using the hydrothermal method. To understand these compounds completely, single crystal X-ray diffraction, IR, powder X-ray diffraction (PXRD) and thermogravimetric studies have been carried out. Complexes 1 and 2 possess three-dimensional (3D) pillared-layer frameworks, and 2-fold and 3-fold interpenetration take place in 1 and 2, respectively. In complex 3, 2D layers are linked by hydrogen bonds, resulting in a 3D supramolecular architecture. Meanwhile, the magnetic behaviors of complexes 1 and 2 have been investigated and weak antiferromagnetic interactions between two Mn(II) centres within the polymers have been revealed.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.06.012
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    ABSTRACT: Two novel oxalate-bridged species – homometallic CuIICuII, [{Cu(bpy)Cl}2(μ-C2O4)] (1) and heterometallic CuIIZnII, [CuZn{(bpy)Cl}2(μ-C2O4)] (2) (bpy = 2,2′-bipyridine) – were synthesized and characterized by elemental analyses, IR and EPR spectroscopy, magnetic susceptibility measurements and single-crystal X-ray diffraction studies. The compounds crystallize in the same, triclinic space group. Their crystal structures consist of the binuclear entities [M(bpy)Cl(μ-C2O4)M(bpy)Cl] [M = Cu2+ (1); M = Cu2+ and/or Zn2+ (2)] linked by the intermolecular π⋯π stacking interactions. Highly unusual, compound 2 is a cocrystallized system containing three types of mutually analogous entities: [Cu(bpy)Cl(μ-C2O4)Cu(bpy)Cl] (CuCu; the same unit as in 1), [Cu(bpy)Cl(μ-C2O4)Zn(bpy)Cl] (CuZn) and [Zn(bpy)Cl(μ-C2O4)Zn(bpy)Cl] (ZnZn), randomly distributed throughout the crystalline lattice in the molar ratio near to 1:2:1, respectively. Each metal atom in both 1 and 2 displays a square-pyramidal coordination involving two N atoms from the coordinated 2,2′-bipyridine ligand and two O atoms from the bridging oxalate group in the basal plane, and one chlorine atom in the apical position. Magnetization measurements, supported also by the EPR study, reveal a strong antiferromagnetic exchange interaction (J = −295(2) and −294(2) cm−1, for 1 and 2, respectively; H = −JS1·S2) between two copper(II) ions through the oxalate bridge.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.05.034
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    ABSTRACT: Three complexes of f-element metal cations, uranyl and ytterbium(III), with either Kemp’s triacid (H3L1) or 1,2,3,4,5,6-cyclohexanehexacarboxylic acid (H6L2) were obtained under solvo-hydrothermal conditions. The trianionic ligand in [H2NMe2][UO2(L1)] (1) is in the very unusual boat conformation, with two equatorial and one axial carboxylate groups. In contrast to the all-axial chair conformation, this ligand geometry is not conducive to the formation of a closed species, and a honeycomb 2D network is formed instead. Adopting the chair conformation, this ligand reacts with ytterbium(III) to give the complex [Yb(L1)(H2O)2] (2), which crystallizes as a 2D network. All-cis H6L2 undergoes isomerization into its all-trans form under the conditions used, with all functional groups equatorial. In the presence of additional nickel(II) nitrate, the complex [Ni(H2O)6][(UO2)2(L2)]·1.5H2O (3) is obtained, in which the unusual coordination mode of the hexa-anionic ligand leads to the formation of a 2D assembly.
    Polyhedron 09/2015; 98. DOI:10.1016/j.poly.2015.05.040