Networks with hexagonal circuits in co-ordination polymers of metal ions (ZnII, CdII) with 1,1′-(1,4-butanediyl)bis(imidazole)

Autor:	Hengqing Jia, Yan Xing, Yong-Hua Lin, Jing-Fu Liu, Jian-Fang Ma
Rok vydání:	2000
Předmět:	chemistry.chemical_classification Pyrazine Metal ions in aqueous solution Inorganic chemistry Bridging ligand General Chemistry Polymer Ion Crystallography chemistry.chemical_compound Trigonal bipyramidal molecular geometry Octahedron chemistry Imidazole
Zdroj:	Journal of the Chemical Society, Dalton Transactions. :2403-2407
ISSN:	1364-5447 1470-479X
DOI:	10.1039/b002433n
Popis:	Three new compounds, [ZnL1.5(H2O)(SO4)]·6H2O 1, [ZnL1.5(H2O)2][NO3]2·2H2O 2 and [CdL1.5(H2O)2(SO4)]·4H2O 3 were obtained from self-assembly of the corresponding metal salts with 1,1′-(1,4-butanediyl)bis(imidazole) (L). In both 1 and 2 zinc ion is five-co-ordinated, showing a less-common trigonal bipyramidal co-ordination polyhedron, while cadmium ion of 3 is six-co-ordinated with a common octahedral arrangement. The sulfate ions of 1 and 3 are co-ordinated, however the nitrate ions of 2 are not. Each of the three compounds is composed of a (6, 3) network with the hexagonal smallest circuit containing six metal ions and six L; each L is co-ordinated to two metal ions, acting as a bridging ligand. In 1 the 2-D sheet of (6, 3) networks is interpenetrated in an inclined mode by symmetry related, identical sheets to give an interlocked 3-D structure, while the (6, 3) networks of both 2 and 3 stack in a parallel fashion to construct frameworks having channels.
Databáze:	OpenAIRE
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