Phosphorus halide–boron halide complexes. Part I. The infrared spectrum of PI3,BI3
Abstract
The infrared spectrum of the complex Pl2,Bl3 has been measured in the solid state between 30 and 1000 cm.–1. Normal co-ordinate calculations show that the best fit to experimental data is obtained by assuming a force constant for the stretching of the P–B bond of 1·0 millidyne per Å. The P–B bond dissociation energy has been estimated to be ca. 16 kcal. mole–1.