title: Crystal structure of chlorido-{1-(2,3-dimethyl-5-oxido-1-phenyl-1H-pyrazol-2-ium-4-yl-κO)-2-[3-methyl-5-oxo-1-phenyl-4,5-di-hydro-1H-pyrazol-4-yl-idene-κO]hydrazin-1-ido-κN (1)}copper(II) from laboratory X-ray powder data.
abstract: In the title compound, [Cu(C21H19N6O2)Cl], the Cu(II) atom is in a slightly distorted square-planar coordination involving two O atoms from the pyrazolone rings [Cu-O = 2.088 (10) and 1.975 (10) Å], an N atom of the azo group [Cu-N = 2.048 (13) Å] and a chloride anion [Cu-Cl = 2.183 (5) Å]. The organic anions act as tridentate chelating ligands. The mol-ecules stack in columns along the c axis.
authors: Peoples' Friendship University of Russia, 6 Miklukho-Mallaya, 117198 Moscow, Russia.
authors: Olga
authors: O
authors: Kovalchukova
authors: Peoples' Friendship University of Russia, 6 Miklukho-Mallaya, 117198 Moscow, Russia.
authors: Van
authors: V
authors: Nguen
authors: Peoples' Friendship University of Russia, 6 Miklukho-Mallaya, 117198 Moscow, Russia.
authors: Svetlana
authors: S
authors: Strashnova
authors: Moscow State University of Design and Technology, 33 Sadovnicheskaya, 117997 Moscow, Russia.
authors: Dmitry
authors: D
authors: Kuznetsov
authors: Georgian Technical University, 77 Kostava, 0175 Tbilisi, Georgia.
authors: Teimuraz
authors: T
authors: Berikashvili
keywords: azo­pyrazolone; copper complex; crystal structure; powder diffraction