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Crystal structure of a low-spin poly[di-?3-cyanido-di-?2-cyanido-bis-(?2-2-ethyl-pyrazine)-dicopper(I)iron(II)].

ABSTRACT: In the title metal-organic framework, [Fe(C6H8N2)2{Cu(CN)2}2] n , the low-spin FeII ion lies at an inversion centre and displays an elongated octa-hedral [FeN6] coordination environment. The axial positions are occupied by two symmetry-related bridging 2-ethyl-pyrazine ligands, while the equatorial positions are occupied by four N atoms of two pairs of symmetry-related cyanide groups. The CuI centre is coordinated by three cyanide carbon atoms and one N atom of a bridging 2-ethyl-pyrazine mol-ecule, which form a tetra-hedral coordination environment. Two neighbouring Cu atoms have a short Cu?Cu contact [2.4662?(7)?Å] and their coordination tetra-hedra are connected through a common edge between two C atoms of cyanide groups. Each Cu2(CN)2 unit, formed by two neighbouring Cu atoms bridged by two carbons from a pair of ?-CN groups, is connected to six FeII centres via two bridging 2-ethyl-pyrazine mol-ecules and four cyanide groups, resulting in the formation of a polymeric three-dimensional metal-organic coordination framework.

SUBMITTER: Partsevska SV 

PROVIDER: S-EPMC6690451 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Crystal structure of a low-spin poly[di-μ<sub>3</sub>-cyanido-di-μ<sub>2</sub>-cyanido-bis-(μ<sub>2</sub>-2-ethyl-pyrazine)-dicopper(I)iron(II)].

Partsevska Sofiia V SV   Naumova Dina D DD   Matushko Igor P IP   Kucheriv Olesia I OI   Gural'skiy Il'ya A IA  

Acta crystallographica. Section E, Crystallographic communications 20190719 Pt 8

In the title metal-organic framework, [Fe(C<sub>6</sub>H<sub>8</sub>N<sub>2</sub>)<sub>2</sub>{Cu(CN)<sub>2</sub>}<sub>2</sub>] <sub><i>n</i></sub> , the low-spin Fe<sup>II</sup> ion lies at an inversion centre and displays an elongated octa-hedral [FeN<sub>6</sub>] coordination environment. The axial positions are occupied by two symmetry-related bridging 2-ethyl-pyrazine ligands, while the equatorial positions are occupied by four N atoms of two pairs of symmetry-related cyanide groups. The Cu  ...[more]

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