title: Calcium and strontium salts of (glycinato-κ(2)N,O)oxidobis(peroxido-κ(2)O,O')vanadate(V) tetrahydrate.
abstract: The title salts calcium (glycinato-κ(2)N,O)oxidobis(peroxido-κ(2)O,O')vanadate(V) tetrahydrate, Ca[VO(O2)2(NH2CH2COO)]·4H2O, and strontium (glycinato-κ(2)N,O)oxidobis(peroxido-κ(2)O,O')vanadate(V) tetrahydrate, Sr[VO(O2)2(NH2CH2COO)]·4H2O, crystallized at pH ca 7.4 with similar lattice parameters. The glycinate anion acts as a bidentate N,O-chelating ligand, and the V atom has a pentagonal bipyramidal geometry, with two η(2)-peroxo groups and the glycinate N atom in the equatorial plane, and one terminal oxo and a glycinate O atom at the axial positions. The H atoms of three of the four water molecules in the strontium salt exhibited disorder over three positions for each molecule.
authors: Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan.
authors: Takeshi
authors: T
authors: Higuchi
authors: Ayana
authors: A
authors: Uchida
authors: Masato
authors: M
authors: Hashimoto
mesh_terms: D002118:Calcium / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D012492:Salts / Q000737:chemistry*; D013324:Strontium / Q000737:chemistry*
chemical_list: C587648:(glycinato-kappa(2)N,O)oxidobis(peroxido-kappa(2)O,O')vanadate(V) tetrahydrate; D056831:Coordination Complexes; D012492:Salts; D002118:Calcium; D013324:Strontium
keywords: (glycinato)oxidobis(peroxido)vanadate(V); calcium salt; crystal structure; strontium salt