TY - JOUR
T1 - Crystal Structure of Calcium Picrate Pentahydrate
T2 - A New Eight-Coordinate Stereochemistry for [M(bidentate)2(unidentate)4]
AU - Diakiw, Vladimir
AU - Hambley, Trevor W.
AU - Kepert, David L.
AU - Raston, Colin L.
AU - White, Allan H.
PY - 1979/1/1
Y1 - 1979/1/1
N2 - The crystal structure of the title compound, Ca(C6H2N3O7)2, 5H2O, has been determined by single-crystal X-ray diffraction at 295(1) K and refined by least squares to a residual of 0.049 for 1513 'observed' reflections. Crystals are orthorhombic, Pmab, a 24.169(6), b 10.292(7), c 8. 554(2) Å, Z4. The stereochemistry about the calcium has not been observed previously for the system [M(bidentate)2-(unidentate), ]; in the present structure, the calcium is coordinated by a pair of bidentate picrate ligands and the four water molecules in an array in which three of the water molecules occupy a triangular face of a square antiprism, the overall array having m symmetry. The remaining water molecule occupies a lattice site with no close interaction with the other species.
AB - The crystal structure of the title compound, Ca(C6H2N3O7)2, 5H2O, has been determined by single-crystal X-ray diffraction at 295(1) K and refined by least squares to a residual of 0.049 for 1513 'observed' reflections. Crystals are orthorhombic, Pmab, a 24.169(6), b 10.292(7), c 8. 554(2) Å, Z4. The stereochemistry about the calcium has not been observed previously for the system [M(bidentate)2-(unidentate), ]; in the present structure, the calcium is coordinated by a pair of bidentate picrate ligands and the four water molecules in an array in which three of the water molecules occupy a triangular face of a square antiprism, the overall array having m symmetry. The remaining water molecule occupies a lattice site with no close interaction with the other species.
UR - http://www.scopus.com/inward/record.url?scp=84970582399&partnerID=8YFLogxK
U2 - 10.1071/CH9790301
DO - 10.1071/CH9790301
M3 - Article
AN - SCOPUS:84970582399
SN - 0004-9425
VL - 32
SP - 301
EP - 309
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
IS - 2
ER -