A. N. Chekhlov
Jan 21, 2010
Citations
0
Influential Citations
0
Citations
Journal
Russian Journal of Inorganic Chemistry
Abstract
The crystal structure of (ethoxycarbonylmethyl)triphenylphosphonium tetrafluoroborate, Ph3P+CH2C(O)OEt · BF4− (space group P21/n, a = 12.727 Å, b = 13.983 Å, c = 12.833 Å, β = 108.83°, Z = 4) is studied by single-crystal X-ray diffraction. The structure was solved by a direct method and refined by full-matrix least squares in the anisotropic approximation to R = 0.056 by 3200 independent reflections (CAD-4 automated diffractometer, λMoKα). In the phosphonium cation the P atom has a distorted tetrahedral coordination and the P-C-C=O torsion angle is 14.3°. The tetrahedral anion is slightly disordered over two orientations with site occupancies for all atoms of 0.875 and 0.125. The crystal contains unusual interionic hydrogen bonds of the P+-C-H…F-B− type.