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Syntheses, Crystal Structures, and Thermal Expansion Properties of Three‐Dimensional Cyanide‐Bridged Compounds Zn(4, 4′‐bpy)(H 2 O) 2 M (CN) 4 (4, 4′‐bpy = 4, 4′‐bipyridine; M = Ni, Pd, Pt)
Author(s) -
Tian XiaoYan,
Hu AiYun,
Yuan AiHua,
Chen Qi,
Yang Dan,
Yang FeiLin
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500271
Subject(s) - monoclinic crystal system , crystallography , isostructural , octahedron , cyanide , chemistry , nickel , zigzag , crystal structure , zinc , center (category theory) , atom (system on chip) , space group , stereochemistry , x ray crystallography , diffraction , inorganic chemistry , geometry , physics , mathematics , organic chemistry , computer science , embedded system , optics
Abstract. Three cyanide‐bridged compounds Zn(4, 4′‐bpy)(H 2 O) 2 M (CN) 4 (4, 4′‐bpy = 4, 4′‐bipyridine; M = Ni ( 1 ), Pd ( 2 ), Pt ( 3 )) were synthesized by self‐assembly of Zn 2+ ions, pillar ligands 4, 4′‐bpy and [ M (CN) 4 ] 2– . Single‐crystal X‐ray diffraction analysis revealed that compounds 1 – 3 are isostructural and belong to monoclinic space group C 2/ c . The zinc atom is located in a distorted octahedral arrangement, whereas the central nickel atom adopts square‐planar arrangement. The central Zn and Ni atoms are linked alternatingly through two cis cyanide groups, generating zigzag chains. The adjacent chains are further connected along two different directions by 4, 4′‐bpy ligands to form a three‐dimensional framework. Thermal expansion (TE) analyses of compounds 1 – 3 showed that both a and c axes are positive TE coefficients, compared to the near zero TE one along the b axis.