Conformation and packing of cobalt(III) sepulchrate dihydrogentriphosphate hexahydrate

In cobalt(III) sepulchrate dihydrogentriphosphate hexahydrate (sepulchrate = 1,3,6,8,10,13,16,19-octaaza-bicyclo[6.6.6]icosane), [Co(C12H30N8)](H2P3O10).6H(2)O, the cation adopts the lel(3) [Delta(lambda lambda lambda)] optically active conformation. The overall geometry of the cation is not significantly different from that found in other salts. A strong symmetric O ... H ... O hydrogen bond is responsible for the cyclic conformation of the anion, the geometry of which is described by an eight-membered puckered ring. The entire crystal packing is dominated by hydrogen bonds. The cations and the anions are linked together in a three-dimensional network with six-membered meshes; the wafer molecules are situated in the voids, and interact only with the anions.