Crystal and molecular structure of pp-diphenyl-p-tetrakis (perfluoromethyl)ethylene glycol phosphinate

The title compound crystallizes in space group P-1 (No. 2) with a=8.796(6), b=10.754(3), c=12.271(2) Å, α=68.56(2), β=67.68(3), γ=78.87(4)°, and Z=2. The structure was solved by direct methods and refined by full-matrix least squares to R=0.048. In the tetrahedral geometry around phosphorus, the P-O(22) bond of 1.464(2) Å is shorter than expected. The O⋯O hydrogen bond results in dimer formation, and the substituted glycol shows staggered conformation along the C(12)-C(3) vector.