Crystal structure of poly[bis­(μ-2-bromo­pyrazine)­tetra-μ2-cyanido-dicopper(I)iron(II)]: a bimetallic metal-organic framework

Acta Crystallographica Section E: Crystallographic Communications

Kucheriv, O.I.¹  Tokmenko, I.I.² 

[1] Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska St 64, Kyiv 01601, Ukraine;UkrOrgSyntez Ltd, Chervonotkatska St 67, Kyiv 02094, Ukraine

关键词: CRYSTAL STRUCTURE;    BROMOPYRAZINE;    DICYANOCUPRATE;    IRON(II);    COPPER(I);    BIMETALLIC;    METAL-ORGANIC FRAMEWORK;    MOF;   

DOI  :  10.1107/S2056989018016638

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the title metal-organic framework, [Fe(C4H3BrN2)2{Cu(CN)2}2]n, the FeII cation is located on an inversion center and has a slightly elongated octa­hedral coordination environment [FeN6], ligated by two pyrazine N atoms of symmetry-related bridging 2-bromo­pyrazine mol­ecules in the axial positions and by four N atoms of pairs of symmetry-related cyanido groups in the equatorial positions. The CuI center has a fourfold coordination environment [CuC3N], with an almost perfect trigonal–pyramidal geometry, formed by three cyanido C atoms and an N atom of a bridging 2-bromo­pyrazine mol­ecule. Copper(I) centers related by a twofold rotation axis are bridged by two carbon atoms from a pair of μ-CN groups, resulting in Cu2(CN)2 units. Each Cu2(CN)2 unit is linked to six FeII cations via a pair of linear CN units, the pair of μ-CN groups and two bridging 2-bromo­pyrazine ligands, resulting in the formation of a metal–organic framework, which is additionally stabilized by the short Cu⋯Cu contacts of 2.4450 (7) Å.

【 授权许可】

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