title: 1,4-Bis{[hydroxy(phenyl)phosphoryl]methyl}piperazine-1,4-diium tetrachloridocadmate(II) dihydrate and the cobaltate(II) analogue.
abstract: The reaction of aminophosphinic acid with CdCl2·2.5H2O or CoCl2·6H2O in concentrated hydrochloric acid yielded the isostructural compounds 1,4-bis{[hydroxy(phenyl)phosphoryl]methyl}piperazine-1,4-diium tetrachloridocadmate(II) dihydrate, (C18H26N2O4P2)[CdCl4]·2H2O, (I), and 1,4-bis{[hydroxy(phenyl)phosphoryl]methyl}piperazine-1,4-diium tetrachloridocobaltate(II) dihydrate, (C18H26N2O4P2)[CoCl4]·2H2O, (II). The asymmetric unit of each contains two half dications, both located on crystallographic centres of inversion, a tetrachloridometallate(II) dianion and two solvent water molecules. The residues are linked into two-dimensional layers in the ab plane by O-H···O hydrogen bonds.
authors.affiliation: School of Chemical Engineering and Environment, Beijing Institute of Technology, 100081 Beijing, People's Republic of China.
authors.forename: Chao-Jun
authors.initials: CJ
authors.lastname: Du
authors.forename: Li-Sheng
authors.initials: LS
authors.lastname: Wang
mesh_terms: D002104:Cadmium / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: C584159:1,4-bis((hydroxy(phenyl)phosphoryl)methyl)piperazine-1,4-diium tetrachloridocadmate(II) dihydrate; C584160:1,4-bis((hydroxy(phenyl)phosphoryl)methyl)piperazine-1,4-diium tetrachloridocobalt(II) dihydrate; D056831:Coordination Complexes; D009942:Organometallic Compounds; D002104:Cadmium; D003035:Cobalt