Syntheses, Crystal Structures and Properties of the Tetrametaphosphimates M₂^II (PO₂NH)₄×8H₂O with M^II: Mg, Mn, Co and Zn.

Abstract

Structure D 2000Syntheses, Crystal Structures and Properties of the Tetrametaphosphimates (PO2NH)4·8H2O with M II : Mg, Mn, Co and Zn. -The title compounds are prepared by simple addition of aq. MX2 (M: Mg; X: Cl; M: Mn, Co, Zn; X: NO3) to a solution of K4(PO2NH)4. The isotypic compounds crystallize in the monoclinic space group P21/c with Z = 2 (single crystal XRD). The structure consists of layers of M 2+ cations in octahedral oxygen coordination and (PO 2 anions. The layers are interconnected via hydrogen bonds. The P4N4 ring of the anion possesses a slightly distorted chair conformation, which is supported by IR spectroscopy.