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Structure and magnetic properties of a three-dimensional cobalt metal-organic framework

机译:三维钴金属-有机骨架的结构和磁性

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摘要

A new 3D fourfold interpenetrated metal-organic framework, [Co(L)_2(SO_4)]·H_2O (1), has been synthesized by the solvothermal reaction of L with CoSO_4·6H_2O (L = 1,4-bis(imidazolyl)benzene). Compound 1 crystallizes in the monoclinic space group P2_1, with the cell parameters: a = 9.943(2), b = 21.7104(15), c = 13.2658(18) ?, β = 97.638(3)°, V = 2838.2(8) ?3, R_1 = 0.0566 and wR_2 = 0.1035. It represents a novel dia net, in which the cobalt atoms are alternately bridged by the imidazolyl N atoms of the ligands L into a three-dimensional network. Compound 1 displays antiferromagnetic interactions. From 2 to 300 K, χm~(-1) it obeys the Curie-Weiss law with C =2.68 emuKmol~(-1) andθ = -2.59 K.
机译:L与CoSO_4·6H_2O(L = 1,4-bis(咪唑基))的溶剂热反应合成了一种新的3D四重互穿金属有机骨架[Co(L)_2(SO_4)]·H_2O(1)。苯)。化合物1在单斜空间群P2_1 / n中结晶,其细胞参数为:a = 9.943(2),b = 21.7104(15),c = 13.2658(18)α,β= 97.638(3)°,V = 2838.2 (8)= 3,R_1 = 0.0566,wR_2 = 0.1035。它代表了一种新型的dia网络,其中钴原子被配体L的咪唑基N原子交替地桥接成三维网络。化合物1显示反铁磁相互作用。从2到300 K,χm〜(-1)服从居里-魏斯定律,C = 2.68 emuKmol〜(-1)和θ= -2.59 K.

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