Premium
Synthesis, Single Crystal Structure Determination and Rietveld Refinement of Cadmium Tetrametaphosphimate Octahydrate Cd 2 (PO 2 NH) 4 ·8H 2 O
Author(s) -
Römer S. Rebecca,
Schnick Wolfgang
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900040
Subject(s) - crystallography , crystal structure , ion , molecule , chemistry , cadmium , hydrogen bond , single crystal , stereochemistry , organic chemistry
Cd 2 (PO 2 NH) 4 · 8H 2 O crystallizes in space group P 2 1 / c (no. 14), Z = 2, with a = 648.5(2), b = 1070.5(2), c = 1328.7(3) pm and β = 103.11(3) °. The structure, isotypic with M 2 (PO 2 NH) 4 · 8H 2 O (M = Mg, Mn, Co, Ni, Zn), is composed of Cd 2+ and (PO 2 NH) 4 4− ions as well as crystal water molecules. The P 4 N 4 rings of the (PO 2 NH) 4 4− ions exhibit a slightly distorted chair‐2 conformation, which has been described by torsion angles, displacement asymmetry parameters and puckering parameters. The tetrametaphosphimate anions are connected forming layers. These layers are linked solely by hydrogen bonds, forming a three‐dimensional network.