C. Bruhn et W. Preetz, BIS[BIS(TRIPHENYLPHOSPHORANYLIDENE)-AMMONIUM] PENTACHLOROFLUOROOSMATE(IV) HYDRATE, [(C6H5)(3)P=N=P(C6H5)(3)](2)-[OSFCL5].H2O, Acta crystallographica. Section C, Crystal structure communications, 53, 1997, pp. 63-66
The structure of the title compound, (C36H30NP2)(2-) [OsCl5F].H2O, has
been determined by single-crystal X-ray diffraction at 208 K. The oct
ahedral [OsCl5F](2-) complex anions are completely ordered in an A(2)B
-type lattice. The monoclinic unit cell contains four formula units, e
ach with a solvent water molecule linked to the F atom by a hydrogen b
ond [O ... F 2.737 (8) Angstrom]. The Os-F bond [1.960(4) Angstrom] is
weakened by trans influence and, correspondingly, the Os-Cl1 bond [2.
307 (2) Angstrom] trans to Os-F is strengthened compared with the aver
age Os-Cl bond length along the Cl-Os-Cl axes of 2.339 Angstrom.