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STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Coordination polymers (July 2014)

Introduced by Len Barbour

The past two decades have witnessed a veritable explosion of reports detailing the solid-state structures of coordination compounds consisting of conceptually infinite one-dimensional chains, two-dimensional nets and three-dimensional frameworks. The concepts involved are relatively simple; crystalline coordination polymers are most often formed from solutions containing metal ions and bridging ligands. The seemingly unlimited opportunities for preparing novel coordination polymers arise not only from obvious choices that influence structural topology (i.e. bridging ligand geometry and metal ion coordination mode) but also from a range of other factors, some of which can be quite subtle. The collection of articles selected for this virtual issue serves to showcase the amazing diversity of the field. The issue collects together a series of articles originally published in the journal between January 2012 and December 2013.

Cover illustration: A layer of edge-shared Ca pentagonal-bipyramidal polyhedra forming six-membered rings, viewed along the c axis, with succinate ligands shown in ball-and-stick representation. See Mazaj et al. [Acta Cryst. (2012), C68, m4-m6].

An introduction to the virtual issue on Coordination polymers

L. J. Barbour

Editorial

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Poly[di-μ-aqua-μ-1,2-bis(pyridin-4-yl)ethene-κ²N:N′-tetrakis(4-iodobenzoato-κ²O,O′)dicadmium]

D. Liu and N.-Y. Li

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Poly[[diaquabis(μ₂-crotonato-κ³O:O,O′)(crotonato-κ²O,O′)lanthanum(III)] adenine monosolvate monohydrate]

A. M. Atria, M. T. Garland and R. Baggio

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Distinct chiral units from an axially prochiral ligand in a photoluminescent zinc(II)–organic complex

M.-X. Zhang, X. Chen, K.-L. Huang, Y. Zhu and S.-S. Yang

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A one-dimensional coordination polymer based on a di-Schiff base supported trinuclear Cu^II subunit

L. Zhang, F. Liu, S. Yuan, X. Wang and D. Sun

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Poly[(μ₃-benzene-1,4-dicarboxylato)di-μ-chlorido-(triethanolamine)dicadmium(II)]: a cadmium–halide coordination polymer with a hydrogen-bonded three-dimensional framework

X. He, J. Lv and G. Xu

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Supramolecular framework in catena-poly[[(nitrato-κO)silver(I)]-μ-(R,S)-2-(pyridin-4-ylsulfinyl)pyrimidine-κ³N,O:N′]

C.-Q. Wan, Z.-J. Wang, P. Qiao, Z.-W. Wang and A.-M. Li

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catena-Poly[[[(oxamide dioxime-κ²N,N′)copper(II)]-μ-L-tartrato-κ⁴O¹,O²:O³,O⁴] tetrahydrate]: a chiral nanochannel framework hosting solvent water molecules

M. M. Bélombé, J. Nenwa, J. S. T. Wankap Kouamo, S. Ponou and A. Fischer

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One-dimensional coordination polymers generated from a new triazole bridging ligand and HgX₂ (X = Cl, Br and I): characterization and luminescent properties

N. Qin, C.-W. Zhao, J.-P. Ma, Q.-K. Liu and Y.-B. Dong

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3,5-Bis{4-[(benzimidazol-1-yl)methyl]phenyl}-4H-1,2,4-triazol-4-amine and its one-dimensional polymeric complex with HgCl₂

Y. Li, Q.-K. Liu, J.-P. Ma and Y.-B. Dong

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Self-assembly of long-chain quaternary ammonium cations in a hybrid inorganic–organic material with one-dimensional polymeric tribromidoplumbate(II)

M. A. Hodorowicz, A. Piaskowska and K. M. Stadnicka

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Two [Cu₂I₂]-based coordination polymers of 1,3-bis(pyridin-4-yl)propane

L.-M. Wan, Z. Yang, A.-X. Zheng, Z.-G. Ren and J.-P. Lang

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A new hybrid organic–inorganic chain: [(phen)Cu–μ-(κ²O:O′-VP₂O₁₀H₃)₂–Cu(phen)]_n

D. Venegas-Yazigi, A. Vega, K. Valdes de la Barra, M. Saldias and E. Le Fur

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A one-dimensional heterometallic coordination polymer with a three-dimensional supramolecular framework: poly[μ₂-aqua-diaqua(2,2′-bipyridyl)(μ₅-2-sulfonatobutanedioato)copper(II)sodium(I)]

J.-H. Fu, Y.-L. Wang, Y. Chen, C.-H. Hu and L. Tang

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Alkaline earth metal salts of 1-naphthoic acid

J.-B. Arlin and A. R. Kennedy

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A novel one-dimensional silver cylinder stabilized by mixed 2-mercaptobenzoic acid and ethylenediamine ligands

D. Sun and Z.-H. Yan

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A novel one-dimensional Co^II coordination polymer: catena-poly[[hexaaquacobalt(II)] [[diaquabis(sulfato-κO)cobalt(II)]-μ-4,4′-bipyridine-κ²N:N′] [[triaqua(sulfato-κO)cobalt(II)]-μ-4,4′-bipyridine-κ²N:N′]]

K.-L. Zhong and M.-Y. Qian

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catena-Poly[[silver(I)-μ-[9,10-bis(1H-benzimidazol-1-ylmethyl)anthracene]-κ²N³:N^3′] bis(nitrato-κO)silver(I)]

J.-L. Du, X.-L. Zhu and P. Li

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The heterobifunctional ligand 5-[4-(1,2,4-triazol-4-yl)phenyl]-1H-tetrazole and its role in the construction of a Cd^II metal–organic chain structure

A. B. Lysenko

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catena-Poly[[[diaqua[3-(pyridin-4-yl)benzoato-κ²O,O′]terbium(III)]-bis[μ-3-(pyridin-4-yl)benzoato-κ²O:O′]] monohydrate]

H.-R. Wang, C.-H. Xia and G.-T. Li

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Biphase synthesis of a one-dimensional coordination polymer based on a dinuclear Cd^II secondary building unit and a novel semi-rigid dicarboxylate

X. Zhang and W. Ying

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catena-Poly[[nickel(II)-μ₂-[1,3-bis(imidazol-1-ylmethyl)benzene-κ²N³:N^3′]-μ₂-(5-carboxybenzene-1,3-dicarboxylato-κ⁴O¹,O^1′:O³,O^3′)] 0.41-hydrate]

X.-D. Wang, G.-F. Hou, Y.-H. Yu and J.-S. Gao

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catena-Poly[[[diaquazinc]-bis{μ-N²,N⁶-bis[(pyridin-3-yl)methyl]pyridine-2,6-dicarboxamide}] dinitrate]

F.-Z. Li and G.-T. Li

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Poly[bis(4-chloropyridinium) tetra-μ₂-chlorido-tetrachloridotrimercurate(II)]

L. Jin and D.-H. Wu

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A one-dimensional platinum mixed-valence complex with bridging thiocyanate S atoms: [[Pt^II(en)₂](μ-SCN)[Pt^IV(en)₂](μ-SCN)](ClO₄)₄ (en is ethane-1,2-diamine)

Y. Ozawa, M. Kim and K. Toriumi

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A polymeric cobalt(II) complex derived from citric acid (H₄cit) and 2,6-diaminopurine (dap): {[Co₄(cit)₂(dap)₄(H₂O)₄]·6.35H₂O}_n

A. M. Atria, J. Parada, M. T. Garland and R. Baggio

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A helical coordination polymer of zinc(II), 4-hydroxybenzohydrazide and sulfate ions

H. Zasłona, P. Drożdżewski and M. Barys

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A potential molecular ferroelectric material: poly[[bis(1-aza-4-azoniabicyclo[2.2.2]octane)di-μ₃-chlorido-tetra-μ₂-chlorido-dichloridotricadmium(II)] dihydrate]

Q.-Q. Zhou, L. Jin, W.-Q. Liao and Y. Zhang

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A one-dimensional coordination polymer with a three-dimensional supramolecular framework: catena-poly[[[(3,4,7,8-tetramethyl-1,10-phenanthroline)cadmium(II)]-μ₃-4,4′-sulfonyldibenzoato] trihydrate]

J. Wang, J.-Q. Tao, X.-J. Xu and C.-Y. Tan

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A one-dimensional coordination polymer based on Cd₂O₂ clusters: poly[aqua(μ₃-4,4′-sulfonyldibenzoato)(3,4,7,8-tetramethyl-1,10-phenanthroline-κ²N,N′)cadmium(II)]

J.-Q. Tao

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A one-dimensional coordination polymer of 5-[(imidazol-1-yl)methyl]benzene-1,3-dicarboxylic acid with Cu^II cations

R. Patra and I. Goldberg

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A one-dimensional silver(I) coordination polymer based on the 2-[2-(pyridin-4-yl)-1H-benzimidazol-1-ylmethyl]phenol ligand exhibiting photoluminescence

D.-C. Hu, C.-H. Xiao, G.-Z. Guo, Y.-X. Yang and J.-C. Liu

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catena-Poly[1,4-dihydroxy-1,4-diazoniabicyclo[2.2.2]octane [aquatri-μ-chlorido-trichloridodicuprate(II)]]

W.-Q. Liao, Q.-Q. Zhou and Y. Zhang

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Binuclear and chain-structure zinc(II) complexes constructed from 3,4-dimethoxy-trans-cinnamic acid and N-donor coligands 4-(1H-pyrazol-3-yl)pyridine and 4,4′-bipyridine

Y.-L. Wang, Z.-J. Shao and S.-S. Qian

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Two one-dimensional coordination polymers generated from a new benzimidazole bridging ligand and CdX₂ (X = Br and I)

Y.-F. Zhang, J.-P. Ma, Q.-K. Liu and Y.-B. Dong

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A one-dimensional zinc(II) coordination polymer incorporating [1,1′-biphenyl]-4,4′-dicarboxylate and N,N′-bis(pyridin-3-ylmethyl)-[1,1′-biphenyl]-4,4′-dicarboxamide ligands

W. Zhou and J. Wang

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A one-dimensional ABX₃-type coordination polymer: catena-poly[benzyltrimethylammonium [tri-μ-chlorido-cadmium(II)]]

D.-H. Wu and L. Jin

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Poly[bis(μ-5-iodoisophthalato)(methanol)dilead(II)] exhibiting a novel centrosymmetric rhombus-shaped I₄ unit

S.-H. Luo

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catena-Poly[tris(μ₃-acetylacetonato)nickelate(II)sodium(I)]

B. Baldo, C. Cruz, D. Venegas-Yazigi, A. Vega and V. Paredes-García

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catena-Poly[[[2-(2-chlorophenoxy)-N′-(2-oxidobenzylidene-κO)acetohydrazidato-κ²N′,O]copper(II)]-μ-morpholine-κ²N:O]

M. Wang and Z.-X. Lian

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A tubular one-dimensional polymer constructed from alternating clusters of europium(III)–water and copper(I) chloride bridged by 4-(pyridin-4-yl)benzoate

G.-J. Cao, Q.-L. Li, C. Rong and Y.-L. Wang

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A three-dimensional supramolecular framework of silver(I), 2-phenylquinoline-4-carboxylate and 4,4′-bipyridine

J.-F. Guo, B.-X. Guo, J.-Y. Wu and G.-P. Yan

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Two one-dimensional linear zinc(II) polymers: catena-poly[[[2,6-bis(1H-benzimidazol-2-yl-κN³)pyridine]zinc(II)]-μ-pyridine-2,4-dicarboxylato-κ²O²:O⁴] and catena-poly[[[2,6-bis(1H-benzimidazol-2-yl-κN³)pyridine]zinc(II)]-μ-pyridine-2,5-dicarboxylato-κ²O²:O⁵]

J. Xiang

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A novel cadmium(II) coordination polymer containing two kinds of independent one-dimensional chain

W.-Q. Liao and Y. Zhang

The title structure contains two kinds of independent one-dimensional chain, viz. {[Cd(C₈H₁₅N₂O₂)Cl₂]⁺}_n and {[CdCl₃(H₂O)]⁻}_n, and uncoordinated water molecules. Each Cd^II cation in the former chain is octahedrally coordinated by two pairs of bridging chloride ligands and two O atoms from different bridging carboxylate groups, while Cd^II cations in the latter chain are octahedrally surrounded by four bridging chloride ligands, one terminal chloride ligand and one coordinated water molecule.

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catena-Poly[bis(μ-2,2′-bipyridin-6-olato)-κ³N,N′:O;O:N,N′-dicopper(I,II) [[tetrafluoridoniobium(V)]-μ-oxido]]

Z.-G. Zhong, Y.-Q. Feng and P. Zhang

The structural unit consists of one C₂-symmetric [NbOF₄]⁻ anion, where the Nb^V centre is five-coordinated by four F atoms and one O atom in the first coordination shell, forming a square-pyramidal coordination geometry, and of one centrosymmetric coordinated [Cu₂(obpy)₂]⁺ cation (obpy is 2,2′-bipyridin-6-olate), in which the oxidation state of each Cu site is disordered, which is confirmed by XPS results.

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A one-dimensional coordination polymer of 5-(pyridin-2-yl)-3,3′-bi(4H-1,2,4-triazole) with Cd(NO₃)₂

W.-Z. Mao and J. Chen

Single-crystal structural analysis reveals that the title complex is a one-dimensional polymeric chain, which is further extended to a three-dimensional supramolecular network via a combination of hydrogen-bonding and aromatic stacking interactions.

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One-dimensional Cu^I and Ag^I ladder-like coordination polymers supported by 2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole

L. Gui, G. Liang, H. Zou and Z. Hou

In Cu^I and Ag^I ladder-like coordination polymers, two metal ions are linked by two 2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole ligands (bep) to form a centrosymmetric 18-membered M₂(bep)₂ metallacycle, while adjacent M₂(bep)₂ metallacycles are further interlinked by another two bep ligands resulting in a ladder-like array.

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A three-dimensional polycatenation framework: catena-poly[[diaquabis(4-{4-[4-(pyridin-4-yl)phenoxy]phenyl}pyridine)nickel(II)]-μ₂-naphthalene-2,6-dicarboxylato]

C.-L. Guo, X.-Q. Yao, Y.-Q. Cheng and Y. Liu

The structure of a nickel compound with a three-dimensional polycatenation framework formed by intermolecular hydrogen bonds and interlocking interactions is reported.

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A novel pentacoordinated cadmium compound: catena-poly[benzyltriethylammonium [[chloridocadmate(II)]-di-μ-chlorido]]

S.-W. Sun and L. Jin

The structure of a title novel one-dimensional ABX₃-type organic–inorganic hybrid complex consists of benzyltriethylammonium cations and one-dimensional anionic {[CdCl₃]⁻}_n chains, in which the Cd^II centres are in an unusual two-layer five-coordinated arrangement.

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Electrochemical properties of a cobalt(II) complex with sulfadiazine and 1,3-bis(pyridin-4-yl)propane

Y.-Y. Zhao, X.-H. Zhao, J. Zhang, J.-G. Pan and X. Li

A one-dimensional polymeric structure of Co^II with sulfadiazine and 1,3-bis(pyridin-4-yl)propane is further stabilized by intermolecular hydrogen bonding. The structure is of interest with respect to its electrochemical properties in the reduction reaction of H₂O₂ to H₂O. Investigation of the thermal stability shows that the complex is stable up to 543 K.

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The double-stranded ladder-like structure of poly[[bis(μ₂-acetato-κ²O:O′)bis(acetato-κO)bis(μ-4,4′-bipyridine-κ²N:N′)dicopper(II)] 4-nitrophenol disolvate tetrahydrate]

S. J. Zamisa, P. Ndungu and B. Omondi

The title complex shows a prominent double-stranded ladder-like coordination polymer featuring square-pyramidal geometry around the two Cu^II centres.

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2,5-Bis[4-methyl-3-(pyridin-3-yl)phenyl]-1,3,4-oxadiazole and its one-dimensional polymeric complex with ZnCl₂

S. Hou, Q.-K. Liu, Y.-A. Li, J.-P. Ma and Y.-B. Dong

In a polymer of 2,5-bis[4-methyl-3-(pyridin-3-yl)phenyl]-1,3,4-oxadiazole (L) with ZnCl₂, one-dimensional P (plus) and M (minus) helical chains are formed, where the ligand has different directions of twist. The helical chains stack together via interchain π–π and C—H⋯π interactions.

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catena-Poly[[di-μ₂-aqua-hexaaquabis(μ₃-4-oxidopyridine-2,6-dicarboxylato)trimanganese(II)] trihydrate]: a new one-dimensional coordination polymer based on a trinuclear Mn^II complex of chelidamic acid

M. Mirzaei, H. Eshtiagh-Hosseini, Z. Karrabi and B. Notash

A one-dimensional coordination polymer with a twofold symmetric repeat unit containing three Mn^II centres. Two different coordination geometries are observed for the two independent Mn^II metal centres, viz. a distorted pentagonal bipyramid and a distorted octahedron.

CCDC reference: 960121

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Zigzag polymer chains in catena-poly[[[triaqua(isobutyrato-κO)magnesium(II)]-μ-isobutyrato-κ²O:O′] monohydrate]

I. L. Malaestean, S. Schmitz, A. Ellern and P. Kögerler

The title compound comprises one-dimensional zigzag polymers of Mg^II cations bridged by isobutyrate groups. The crystal structure is characterized by stacks of hydrophobic (isobutyrate) and hydrophilic (H₂O) groups that alternate along the a axis.

CCDC reference: 960018

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A one-dimensional cadmium metal–organic chain based on a [Cd₄(COO)₄] secondary building unit and a flexible dicarboxylic acid ligand

Y.-K. Deng, Z.-H. Yan and D. Sun

The structural evidence for the formation of a cluster-based chain-like polymeric structure incorporating both syn and anti conformers of a flexible dicarboxylate ligand is reported.

CCDC reference: 961456

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A one-dimensional coordination polymer created via in situ ligand synthesis involving C—N bond formation

H. Cai, Y. Guo and J.-G. Li

A novel cadmium complex consists of one-dimensional ladders constructed from [Cd₂(COO)₂] dimeric subunits. A combination of hydrogen bonding and π–π stacking interactions extend the one-dimensional ladders into a three-dimensional supramolecular architecture.

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Synthesis, crystal structure and fluorescence spectrum of a cadmium(II) sulfaquinoxaline complex

X.-H. Zhao, Y.-Y. Zhao, J. Zhang, J.-G. Pan and X. Li

A one-dimensional polymeric structure of Cd^II with sulfaquinoxaline is further stabilized by intermolecular hydrogen bonding. The fluorescence spectrum reveals that the complex emits strong blue fluorescence. The thermal analysis shows that the framework is stable up to 663 K.

CCDC reference: 964428

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A novel one-dimensional tubular cadmium(II) coordination polymer based on 5-(carboxylatomethoxy)benzene-1,3-dicarboxylate containing 4-aminopyridinium ions

P. Wang, Y. Zhao, Y. Chen and X.-Y. Kou

A novel anionic tubular Cd^II coordination polymer based on the 5-(carboxylatomethoxy)benzene-1,3-dicarboxylate ligand and containing 4-aminopyridinium cations had been synthesized under hydrothermal conditions. In the solid state, the 4-aminopyridinium cation props up the structure through hydrogen bonds to the O-atom acceptors of ligands and solvent water molecules.

CCDC reference: 962876

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A novel one-dimensional copper(II) coordination polymer and a trinuclear nickel(II) complex with a one-dimensional hydrogen-bonded structure

X.-H. Chen, S.-Y. Chen, C.-L. Xie and Q.-J. Wu

A novel infinite one-dimensional coordination polymer involving N′-(2-hydroxybenzylidene)-2-(naphthalen-2-yloxy)acetohydrazide, and a trinuclear nickel complex of 2-hydroxy-N′-(2-oxo-2-phenoxyethyl)benzohydrazide with a one-dimensional network structure constructed by hydrogen-bonding interactions, are reported.

CCDC references: 828188; 966097

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A new layered Ca–succinate coordination polymer

M. Mazaj, V. Kaucic, A. Golobic and N. Zabukovec Logar

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Acta Cryst. (2012). C68, m34-m36
doi: 10.1107/S0108270111055454

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