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Anion‐Dependent Facile Route to Magnetic Dinuclear and Dodecanuclear Cobalt Clusters
Author(s) -
Zheng LingLing,
Leng JiDong,
Herchel Radovan,
Lan YanHua,
Powell Annie K.,
Tong MingLiang
Publication year - 2010
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.201000222
Subject(s) - chemistry , cobalt , ferrimagnetism , cluster (spacecraft) , ferromagnetism , crystallography , ion , ligand (biochemistry) , coupling (piping) , methanol , stereochemistry , inorganic chemistry , magnetization , organic chemistry , condensed matter physics , magnetic field , biochemistry , receptor , computer science , engineering , programming language , mechanical engineering , physics , quantum mechanics
An unprecedented dodecanuclear Co III 3 Co II 9 and a dinuclear Co II 2 cluster were synthesized facilely from reactions of different coblt(II) salts with the ligand (1 H ‐benzimidazol‐2‐yl)methanol. The cobalt ions in the Co 12 supercluster are linked into a disclike structures through μ 3 ‐O L , μ‐O L , μ 3 ‐O 2– , μ 1,1 ‐N 3 – and μ 1,1,1 ‐N 3 – bridges. Magnetic studies reveal that strong ferromagnetic coupling through double end‐on (EO) azido bridges exists in 1 , while both ferromagnetic coupling through the μ 3 ‐O L and μ‐O L pathways and antiferromagnetc coupling through the μ 1,1,1 ‐N 3 – pathway exist in 2 , which results in a ferrimagnetic behaviour of 2 .