Molecular Zeeman effect measurements on the ethylene–HCl complex

Abstract

The molecular g values and magnetic susceptibility anisotropies for the ethylene–HCl complex were measured using pulsed Fourier transform microwave spectroscopy in magnetic fields of 25 and 30 kG. Values obtained are gaa=0.0383(5), gbb=−0.0072(3), gcc=−0.0082(2), 2χaa−χbb−χcc =−4.27(0.06), and 2χbb−χaa−χcc=1.05 (0.08)×10−9 MHz/G2. Quadrupole moments for the complex are Qaa=−2.30(24)×10−26 esu cm2, Qbb=2.40(38) ×10−26 esu cm2, and Qcc=−0.10(35)×10−26 esu cm2. From this data molecular quadrupole moments and other Zeeman parameters are derived for ethylene.