title: cis-Diaqua-bis-(2,2'-bipyrimidine-κN,N)manganese(II) bis-(perchlorate) nitro-methane disolvate monohydrate.
abstract: The asymmetric unit of the title compound, [Mn(C(8)H(6)N(4))(2)(H(2)O)(2)](ClO(4))(2)·2CH(3)NO(2)·H(2)O, contains one half of a cationic Mn(II) complex, a ClO(4) (-) anion, a nitro-methane solvent mol-ecule and one half-mol-ecule of water. The complex mol-ecule and the solvent water mol-ecule are located on a twofold rotation axis. In the complex, the Mn(II) ion has a distorted cis-N(4)O(2) octa-hedral coordination geometry defined by four N atoms of the two chelating 2,2'-bipyrimidine ligands and two O atoms of water mol-ecules. In the crystal, the complex cations, anions and solvent mol-ecules are linked by inter-molecular O-H⋯N, O-H⋯O and weak C-H⋯O hydrogen bonds. The ClO(4) (-) anion is disordered over two sites with a site-occupancy factor of 0.512 (12) for the major component.
authors.affiliation: School of Applied Chemical Engineering, The Research Institute of Catalysis, Chonnam National University, Gwangju 500-757,  Republic of Korea.
authors.forename: Kwang
authors.initials: K
authors.lastname: Ha