Phosphorus trifluoride (data page)

This page provides supplementary chemical data on phosphorus trifluoride.

Material Safety Data Sheet

Structure and properties

Structure and properties Index of refraction, nD ? Abbe number ? Dielectric constant, εr ? ε0 at ? °C Bond strength 499 kJ/mol (P–F) Bond length 156 pm (P–F) Bond angle 96.3° (F–P–F) Magnetic susceptibility ?

Thermodynamic properties

Phase behavior Triple point ? K (? °C), ? Pa Critical point 271 K (−2 °C), 42.7 atm Std enthalpy changeof fusion, ΔfusHo ? kJ/mol Std entropy changeof fusion, ΔfusSo ? J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo ? kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid ? J/(mol K) Heat capacity, cp ? J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas ? kJ/mol Standard molar entropy,Sogas ? J/(mol K) Heat capacity, cp ? J/(mol K)

Spectral data

UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR   Carbon-13 NMR   Other NMR data   MS Masses of main fragments  

References