title: Bis[4-(1-imino-eth-yl)-3-methyl-1-phenyl-1H-pyrazol-5-olato-κO,N]copper(II).
abstract: In the title complex, [Cu(C(12)H(12)N(3)O)(2)], the Cu(II) ion is tetra-coordinated by two N atoms and two O atoms from two bis-chelating 4-(1-imino-eth-yl)-3-methyl-1-phenyl-1H-pyrazol-5-olate ligands in a square-planar geometry. The two N atoms and two O atoms around the Cu(II) atom are trans to each other, as the Cu(II) atom lies on an inversion centre. The six-membered ring composed of the Cu, an O, an N and three C atoms of the ligand and the pyrazole ring is nearly planar, the largest deviation being 0.037 (4) Å for an N atom. In the crystal, weak inter-molecular C-H⋯N hydrogen-bonding inter-actions link the mol-ecules into chains along the c axis.
authors: Department of Basic Science, Tianjin Agriculturial College, Tianjin Jinjing Road No. 22, Tianjin 300384,  People's Republic of China.
authors: Hualing
authors: H
authors: Zhu
authors: Zhan
authors: Z
authors: Wang
authors: Zhen
authors: Z
authors: Wei
authors: Yanan
authors: Y
authors: Bai
authors: Xiaoping
authors: X
authors: Xv