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- Title
First Crystal Structure of a ( μ-Oxamidato)tricopper(II)metal(II)-Type Tetranuclear Complex: Synthesis, Crystal Structure, and Magnetism of a Copper(II)manganese(II) Complex ([Cu<sup>II</sup><sub>3</sub>Mn<sup>II</sup>( μ-L)<sub>3</sub>](N<sub>3</sub>)<sub>2</sub>⋅EtOH) Incorporating a Macrocyclic Oxamide Ligand L (Macrocyclic Oxamide=1,4,8,11-Tetraazacyclotetradecane-2,3-dione)
- Authors
Tang, Jin-Kui; Wang, Qing-Lun; Gao, En-Qing; Chen, Jiu-Tong; Liao, Dai-Zheng; Jiang, Zong-Hui; Yan, Shi-Ping; Cheng, Peng
- Abstract
A novel oxamidato-bridged CuII3MnII tetranuclear complex incorporating a macrocyclic oxamide (macrocyclic oxamide L=1,4,8,11-tetraazacyclotetradecane-2,3-dione) of formula [CuII3MnII( μ-L)3](N3)2⋅ EtOH was prepared and spectroscopically, structurally, and magnetically characterized. This complex represents the first structurally characterized [CuII3MII( μ-oxamidato)3]-type tetranuclear complex. The structure consists of tetranuclear units in which the central MnII atom is located on a twofold axis and linked to the each external CuII atom ion via the ' exo'- cis-arranged O-atoms of the macrocyclic oxamidato ligands. The temperature dependence of the magnetic susceptibility for the complex was analyzed by means of the Hamiltonian Ĥ=−2 JŜMn( ŜCu1+ ŜCu2+ ŜCu3), leading to J=−16.3 cm−1.
- Publication
Helvetica Chimica Acta, 2002, Vol 85, Issue 1, p175
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/1522-2675(200201)85:1<175::AID-HLCA175>3.0.CO;2-1