Tetra(hexamethylphosphoric triamide) solvate with ammonium tetrakis(isothiocyanato)diamminechromate(III): Synthesis and crystal structure

Abstract

Ammonium tetrakis(isothiocyanato)diamminechromate(III) crystalline solvate (NH₄)[Cr(NH₃)₂(NCS)₄] ∙ 4((CH₃)₂N)₃PO (I) has been synthesized and structurally characterized. Crystals of solvate I are tetragonal, space group P\(\overline{4}\)2₁c, a = 15.8594(3) Å, c = 11.1675(2) Ǻ, V = 2808.86(9) Ǻ³, Z = 2, ρ_calcd = 1.245 g/cm³, ρ_meas = 1.21 g/cm³. Cations, solvate molecules, and anions form chains in a crystal by means of intermolecular hydrogen bonds.