Poly[bis-(μ2- N, N-di-methyl-formamide-κ2 O: O)bis-(μ4-thio-phene-2,5-di-carboxyl-ato-κ4 O: O': O'': O''')dicobalt(II)]

Ji-Yun Ren; Rou Huang; Zheng Yin; Li-Hui Cao

doi:10.1107/S2414314622007751

Poly[bis-(μ₂- N, N-di-methyl-formamide-κ² O: O)bis-(μ₄-thio-phene-2,5-di-carboxyl-ato-κ⁴ O: O': O'': O''')dicobalt(II)]

IUCrdata. 2022 Aug 12;7(Pt 8):x220775. doi: 10.1107/S2414314622007751. eCollection 2022 Aug.

Authors

Ji-Yun Ren¹, Rou Huang¹, Zheng Yin¹, Li-Hui Cao¹

Affiliation

¹ College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China.

Abstract

The asymmetric unit of the title three-dimensional metal-organic hybrid compound, [Co₂(C₆H₂O₄S)₂(C₃H₇NO)₂] _n , comprises two cobalt(II) cations, one residing on a twofold axis and the other on a centre of inversion, one thio-phene-2,5-di-carboxyl-ate (tdc^2-) ligand and one coordinating di-methyl-formamide (DMF) solvent mol-ecule. Both of the cobalt(II) cations exhibit an octa-hedral coordination environment from the four carboxyl O atoms of the tdc^2- anions in a μ ₄-κ ¹:κ ¹:κ ¹:κ ¹ fashion and two O atoms from DMF. A pair of carboxyl O atoms and one DMF molecule connect the adjacent cobalt(II) cations into an infinite chain, leading to a rod-spacer framework with rhombus-window channels, yet no residual solvent-accessible voids are present because the coordinating DMF molecules are oriented into the potential channels.

Keywords: cobalt(II); crystal structure; metal–organic framework; rod-spacer.

Grants and funding

Funding for this research was provided by: the College Students’ Innovation and Entrepreneurship Training Program at Shaanxi University of Science and Technology (No. S202110708108) and the Key Research and Development Program of Shaanxi (No. 2022GY-180).