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Structure and Magnetism of two Polynuclear Complexes Containing both Macrocyclic and Azido Ligands
Author(s) -
Sun YaQiu,
Gao DongZhao,
Ma Yue,
Yang GuangMing,
Liao DaiZheng,
Yan ShiPing
Publication year - 2009
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.200900179
Subject(s) - antiferromagnetism , magnetism , ferromagnetism , chemistry , crystallography , magnetic susceptibility , ion , exchange interaction , stereochemistry , condensed matter physics , physics , organic chemistry
The two complexes of formula [Cu 2 (CuL) 2 (μ‐N 3 ) 4 ] · 2CH 3 OH ( 1 ) and [Cu 2 (NiL) 2 (μ‐N 3 ) 4 ] · 2CH 3 OH ( 2 ) (CuL and NiL, H 2 L = 2,3‐dioxo‐5,6,14,15‐dibenzo‐1,4,8,12‐tetraazacyclo‐pentadeca‐7,13‐dien), were synthesized and structurally determined. The magnetic susceptibility data of 1 and 2 were analyzed. For complex 1 , magnetic measurements show alternating ferromagnetic and antiferromagnetic exchange couplings J 1 = 23.67 cm –1 , J 2 = –189.11 cm –1 , zJ ’ = –0.62 cm –1 . For complex 2 , the doubly bridged asymmetric EO promotes a ferromagnetic interaction between Cu II and Cu II ions( J = 40.764 cm –1 ).
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