Journal
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Volume 635, Issue 15, Pages 2682-2687Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/zaac.200900179
Keywords
Macrocyclic oxamide complex; Azido complex; Coordination chemistry; Magnetic properties; Polynuclear complexes
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Funding
- National Natural Science Foundation of China [20771083, 20631030, 20571046]
- National Basic Research Program of Chain (973 Program) [2007CB815305]
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The two complexes of formula [Cu-2(CuL)(2)(mu-N-3)(4)]center dot 2CH(3)OH (1) and [Cu-2(NiL)(2)(mu-N-3)(4)]center dot 2CH(3)OH (2) (CuL and NiL, H2L = 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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