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A Facile Direct Synthesis of Bimetallic Cu II Zn II Complexes with Ethylenediamine Revealing Different Types of Chain Crystal Structures
Author(s) -
Pryma Oksana V.,
Petrusenko Svitlana R.,
Kokozay Volodymyr N.,
Skelton Brian W.,
Shishkin Oleg V.,
Teplytska Tetyana S.
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200390185
Subject(s) - chemistry , ethylenediamine , octahedron , crystal structure , bimetallic strip , zinc , crystallography , acetonitrile , dimethylformamide , copper , inorganic chemistry , pyridine , ligand (biochemistry) , solvent , metal , medicinal chemistry , organic chemistry , biochemistry , receptor
Unactivated copper metal powder and zinc oxide readily react with ethylenediamine (en) in nonaqueous [methanol, dimethylformamide (dmf), dimethyl sulfoxide (dmso), acetonitrile] solutions of ammonium salts under ambient conditions producing, in high yields, a series of heterobimetallic complexes of general formula [Cu(en) 2 ZnX 4 ]·(Solv), where X = Cl, Br, NCS, CH 3 COO (OAc); Solv = dmf, dmso, CH 3 CN, H 2 O. The single‐crystal X‐ray analysis of the complexes reveals chain structures, which are based on the completion of the octahedral coordination of Cu II by two bridging X atoms from ZnX 4 2− . The ZnX 4 2− is shown to be a distorted tetrahedron (Cl, Br, NCS) or a very distorted octahedron (OAc) and to behave as a one‐ or two‐linking centre bridging ligand. The chains are found to be zigzag [Cu(en) 2 ZnCl 4 ]·dmso ( 1 ), [Cu(en) 2 ZnCl 4 ]·dmf ( 2 ), [Cu(en) 2 Zn(NCS) 4 ]·CH 3 CN ( 3 ), quasi linear [Cu(en) 2 Zn(OAc) 4 ] ( 4 ), or helical, [Cu(en) 2 Zn(NCS) 4 ]· 0.5H 2 O ( 5 ), depending on the nature of the anion and solvent. Complex 4 represents the first compound containing Zn(OAc) 4 2− to be crystallographically authenticated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)