Mt. Averbuchpouchot et al., GUANIDINIUM CYCLOOCTAPHOSPHATE DIHYDRATE ELABORATION AND CRYSTAL-STRUCTURE, European journal of solid state and inorganic chemistry, 30(7-8), 1993, pp. 741-750
We describe chemical preparation and crystal structure of guanidinium
cyclooctaphosphate dihydrate (CN3H6)8P8O24.2H2O. This new example of a
P8O24 ring anion is monoclinic, P2(1)/n, with Z = 2 and the following
unit-cell dimensions : a=12.621(4), b=20.41(1), c=9.365(6) angstrom,
beta=110.45(4)-degrees The P8O24 ring anion is, as in most of the prev
iously reported examples. centrosymmetrical. Crystal structure has bee
n performed with a final R value of 0.037 for 4549 independent reflect
ions.The hydrogen-bond scheme is given.