Dielectric and pressure virial coefficients of imperfect gases. Pure N2O

Abstract

Dielectric and pressure virial coefficients of N₂O have been measured at 6.5, 30.1, and 75.1 °C. The dipole moment and the polarizability determined from the first virial coefficient are, respectively, 0.18 D and 3.03 × 10⁻²⁴cm³. In calculating the molecular quadrupole moment from the dielectric second virial coefficient, effects due to various interaction energy terms were taken into consideration. These energy terms are due to quadrupole‐quadrupole interaction, dipole‐dipole interaction, quadrupole‐induced dipole interaction, reaction fields of induced moments, and anisotropic effects. Our experimental measurements lead to a molecular quadrupolar moment of 3.4 × 10⁻²⁶ esu · cm².