A Novel One-Dimensional Copper Mellitate Complex Featured by {Cu(H2O)2(urea)[C6(COO)4(COOH)2]}n2n- Polyanions

Blue monoclinic single crystals of the novel one‐dimensional [H3N‐(CH2)6‐NH3][Cu(H2O)2(urea)(μ2‐C6(COO)4(COOH)2)]·H2O coordination polymer were prepared in aqueous solution at room temperature in the presence of 1,6‐diaminohexane and urea [space group P21/n (no. 14) with a = 958.48(9), b = 1465.74(1...

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Published in:Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 641; no. 11; pp. 1886 - 1891
Main Authors: Köferstein, Roberto, Robl, Christian
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 01.09.2015
WILEY‐VCH Verlag
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Wiley-VCH Verlag
Subjects:
Benzenehexacarboxylic acid
Chemical Sciences
Coordination chemistry
Copper
Diaminohexane
Inorganic chemistry
Polyanions
Urea
Urea
Infrared spectroscopy
Benzene carboxylate
Coordination polymer
Magnetism
Diaminohexane
curie-weiss law
mellitate
Copper complexes
ISSN:0044-2313, 1521-3749
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Summary:Blue monoclinic single crystals of the novel one‐dimensional [H3N‐(CH2)6‐NH3][Cu(H2O)2(urea)(μ2‐C6(COO)4(COOH)2)]·H2O coordination polymer were prepared in aqueous solution at room temperature in the presence of 1,6‐diaminohexane and urea [space group P21/n (no. 14) with a = 958.48(9), b = 1465.74(11), c = 1821.14(12) pm, β = 97.655(8)°]. The Cu2+ cation is coordinated in a square pyramidal manner by two oxygen atoms stemming from the dihydrogen mellitate tetraanion, one oxygen atom from the urea molecule, and two water molecules. The Cu–O distances are in the range of 193.3(2) and 229.4(2) pm. The connection between Cu2+ and [C6(COO)4(COOH)2]4– yields infinite chain‐like polyanions parallel to [1$\bar{}$01] with a composition of {Cu(H2O)2(urea)[C6(COO)4(COOH)2]}n2n–. The dihydrogen mellitate tetraanion adopts a μ2 coordination mode. The [(H3N–(CH2)6–NH3)]2+ cations are accommodated between the chains as counter cations. The hexane‐1,6‐diammonium cations adopt a partial synclinal conformation. The chains are connected by strong and weak hydrogen bonds. Magnetic measurements reveal a paramagnetic Curie‐Weiss behavior and a magnetic moment of 1.93 μB per Cu2+. Thermoanalytical investigations in air show that the complex is stable up to 135 °C, and the following decomposition processes yield CuO.
Bibliography:ark:/67375/WNG-F74SC7F9-5
ArticleID:ZAAC201500231
istex:8EBCC65BDCED118B9655CE6A32A8942162C4CF22
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201500231