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Acta Cryst. (2013). C69, 1494-1497  [ doi:10.1107/S0108270113031181 ]

Calcium and strontium salts of (glycinato-[kappa]2N,O)oxidobis(peroxido-[kappa]2O,O')vanadate(V) tetra­hydrate

T. Higuchi, A. Uchida and M. Hashimoto

Synopsis: The calcium and strontium terahydrate salts of (glycinato)oxidobis(peroxido)vanadate(V) 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 [eta]2-peroxide groups and the glycinate N atom in the equatorial plane, and one terminal oxo and a glycinate O atom at the axial positions.

Formula: Ca[V(C2H4NO2)(O2)O]·4H2O and Sr[V(C2H4NO2)(O2)O]·4H2O

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