Tetrakis(dimethylammonium) trans-dichloridobis[5,5′-(pyrazine-2,3-diyl)bis(1H-tetrazol-1-ido-κN1)]copper(II)

• Main Authors: Ju-Hsiou Liao, Pei-Shan Shi
• Format: Article
• Language: English
• Published: International Union of Crystallography 2012-10-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536812036896

The title compound, (C2H8N)4[Cu(C6H2N10)2Cl2], consists of an anionic complex which is composed of a CuII ion surrounded by four N atoms from two pyrazine-2,3-diylbis(1H-tetrazol-1-ide) ligands, and two Cl− atoms in a trans-Cl2N4 coordination geometry; the CuII atom lies on a site of symmetry 2/m. The Cu—Cl distance of 2.8719 (5) Å is long due to the Jahn–Teller distortion of the d9 electron configuration of CuII ion. The tetrazole and pyrazine rings make an N—C—C—N torsion angle of 38.25 (17)°. The charge of the anionic complex is balanced by four dimethylammonium cations, which interact with the anionic complexes via N—H...N and N—H...Cl hydrogen bonds.