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Published on: December 13, 2016
A heterometallic ferrimagnet based on a new TTF-bis(oxamato) ligand
Long Cui1, Jing-Yuan Ge1, Chanel F Leong2
1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China. zuojl@nju.edu.cn.
Abstract:
An oxamato unit has been introduced into a tetrathiafulvalene (TTF) system for the first time via direct condensation, generating a new π-extended TTF ligand, TTF-Et2H2opba (opba = ortho-phenylenebis-oxamato). On the basis of this ligand, the Cu(ii) complex [(n-Bu)4N]2[Cu(TTF-opba)] (1) has been obtained. By employing this complex as a "metalloligand", we have successfully prepared an interesting heterometallic one-dimensional complex {[Cu(TTF-opba)][Mn(CH3OH)2]}n (2), via coordination of the free carbonyl-oxygen atoms of the two oxamato groups with Mn(ii) ions. The new compounds have been structurally characterized, and their electrochemical and magnetic properties probed. Complex 2 shows a ferrimagnetic behavior with g = 1.96 and J = -22.36 cm-1.
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