The bivalent metal hypophosphites Sr(H2PO2)2, Pb(H2PO2)2and Ba(H2PO2)2
Natalia V. KuratievaM.I. NaumovaN. V. PodberezskayaDmitry Yu. Naumov
Abstract
The structures of isomorphous monoclinic strontium and lead bis(dihydrogenphosphate), Sr(H2PO2)2 and Pb(H2PO2)2, and orthorhombic barium bis(dihydrogenphosphate), Ba(H2PO2)2, consist of layers of hypophosphite anions and metal cations exhibiting square antiprismatic coordination by O atoms. The Sr and Pb atoms are located on sites with point symmetry 2, and the Ba atoms are on sites with point symmetry 222. Within the layers, each anion bridges four metal cations.
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