Crystal structure of catena -poly[[[(2-eth-oxy-pyrazine-κ N )copper(I)]-di-μ 2 -cyanido] [copper(I)-μ 2 -cyanido]]

• Published in: Acta crystallographica. Section E, Crystallographic communications Vol. 75; no. Pt 11; pp. 1797 - 1800
• Main Authors: Partsevska, Sofiia V, Sirenko, Valerii Y, Terebilenko, Kateryna V, Malinkin, Sergey O, Gural'skiy, Il'ya A
• Format: Journal Article
• Language: English
• Published: England 01.11.2019
• Subjects: crystal structure; metal–organic framework; copper(I); eth­oxy­pyrazine; cyanides
• ISSN: 2056-9890; 2056-9890
• DOI: 10.1107/S205698901901452X

In the asymmetric unit of the title coordination compound, {[Cu(CN)(C H OC H N )][Cu(CN)]} , there are two Cu atoms with different coordination environments. One Cu ion is coordinated in a triangular coordination geometry by the N atom of the 2-eth-oxy-pyrazine mol-ecule and by two bridging cyanide ligands, equally disordered over two sites exchanging C and N atoms, thus forming polymeric chains parallel to the axis. The other Cu atom is connected to two bridging cyanide groups disordered over two sites with an occupancy of 0.5 for each C and N atom, and forming an almost linear polymeric chain parallel to the axis. In the crystal, the two types of chain, which are orthogonal to each other, are connected by cuprophilic Cu⋯Cu inter-actions [2.7958 (13) Å], forming two-dimensional metal-organic coordination layers parallel to the plane. The coordination framework is further stabilized by weak long-range (electrostatic type) C-H⋯π inter-actions between cyano groups and 2-eth-oxy-pyrazine rings.