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Structural Diversity and Magnetic Properties of the Manganese(II)/Carbazol‐9‐ylacetate/ N , N ′‐Donor Reaction System
Author(s) -
Ma YunSheng,
Tang XiaoYan,
Xue FengFeng,
Chen Bin,
Dai YaoLiang,
Yuan RongXin,
Roy Soumyajit
Publication year - 2012
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.201101206
Subject(s) - chemistry , manganese , antiferromagnetism , crystallography , crystal structure , ion , bipyridine , stereochemistry , physics , organic chemistry , condensed matter physics
Four manganese‐based carbazol‐9‐ylacetato complexes [Mn 2 (cabo) 4 (2,2′‐bpy) 2 ] ( 1 ), [Mn 2 (cabo) 2 (2,2′‐bpy) 4 ](ClO 4 ) 2 ( 2 ), [Mn(cabo) 2 (CH 3 OH) 2 ] n ( 3 ), and [Mn(cabo) 2 (4,4′‐bpy) 2 ] n ( 4 ) (cabo – = carbazol‐9‐ylacetate, 2,2′‐bpy = 2,2′‐bipyridine, 4,4′‐bpy = 4,4′‐bipyridine) have been synthesized and characterized. The crystal structure of 1 consists of a symmetrical dimeric Mn II carboxylato paddle‐wheel unit, whereas dinuclear 2 consists of a dimeric unit with two Mn II ions bridged by two carboxylato ligands. Compounds 3 and 4 present comparable 1D structures with Mn II ions bridged by carboxylato ligands. Magnetic‐property studies show that antiferromagnetic exchange interactions propagate among the Mn II ions in 1 , 2 , and 3 .