Synthesis, crystal structure and Hirshfeld surface analysis of di-μ2-iodido-bis-[(2,2'-bi-quinoline-κ2 N, N')copper(I)]

Ayalew W Temesgen; Anton P Novikov; Alexander G Tskhovrebov; Ekaterina K Kultyshkina; Tuan Anh Le

doi:10.1107/S2056989023000634

Synthesis, crystal structure and Hirshfeld surface analysis of di-μ₂-iodido-bis-[(2,2'-bi-quinoline-κ² N, N')copper(I)]

Acta Crystallogr E Crystallogr Commun. 2023 Feb 7;79(Pt 3):132-135. doi: 10.1107/S2056989023000634. eCollection 2023 Feb 1.

Authors

Ayalew W Temesgen¹, Anton P Novikov^{2

3}, Alexander G Tskhovrebov², Ekaterina K Kultyshkina², Tuan Anh Le⁴

Affiliations

¹ Department of Chemistry, College of Natural and Computational Science, University of Gondar, Gondar 196, Ethiopia.
² Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya, St, 117198, Moscow, Russian Federation.
³ Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospekt bldg 4, 119071 Moscow, Russian Federation.
⁴ University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, 100000, Hanoi, Vietnam.

Abstract

The mol-ecular and crystal structures of the title compound, [Cu₂I₂(C₁₈H₁₂N₂)₂], were examined by single-crystal X-ray diffraction and Hirshfeld surface analysis. The Cu atom is coordinated in a distorted tetra-hedral geometry by two N atoms from the 2,2'-bi-quinoline ligands and the two μ₂-bridging iodide ligands. The mol-ecules are in contact via π-π-stacking inter-actions. Hirshfeld surface analysis showed that the most important contributions to the inter-molecular inter-actions are H⋯H (39.7%), H⋯I/I⋯H (17.8%), C⋯H/H⋯C (17.5%), C⋯C (16.5%), N⋯C/C⋯N (3.9%) and N⋯H/H⋯N (3.5%).

Keywords: Hirshfeld surface analysis; biquinoline; copper complex; crystal structure; π–π stacking.

Grants and funding

Funding for this research was provided by: Ministry of Science and Higher Education of the Russian Federation (subject No. 122011300061-3). This work was supported by the RUDN University Strategic Academic Leadership Program: Russian Foundation for Basic Research (grant No. 21-53-54001).