Synthesis,crystal structure and magnetic properties of [Mn(LH)2(H2O)2] n with a two-dimensional layered structure and three-dimensional hydrogen bonding network |
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| Authors: | Zhao Qihua Li Haifang Fang Ruibin |
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| Institution: | (1) Department of Chemistry, Yunnan University, Kunming, 650091, P.R. China;(2) School of Pharmacy, Yunnan University, Kunming, 650091, P.R. China |
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| Abstract: | A new manganese polymer Mn(LH)2(H2O)2]
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(LH2 = iminodiacetic acid) (1) has been prepared and structurally and magnetically characterized. The polymer has a two-dimensional (2D) layered structure with the unique Mn atom on an inversion center, surrounded by six oxygen atoms. In each layer, all iminodiacetic acid entities are coordinated to Mn atoms in a bridging/bidentate mode, thus linking the Mn(LH)2(H2O)2] monomeric units together to form a 2D layered polymer. Hydrogen bonding is responsible for an extended three-dimensional network. Analysis of variable-temperature magnetic susceptibility data (2–300) K shows that the polymer displays weak antiferromagnetic exchange interaction with a coupling constant, J = –0.28 cm–1. |
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