Zeeman Study of Nuclear Quadrupole Resonance of Nitrogen in Hydrazine

Abstract

Experiments of the Zeeman effect in the nuclear quadrupole resonance of N 14 in solid hydrazine have been made at liquid nitrogen temperature. The principal axes of the field gradient tensors at the positions of N 14 were determined. In the coordinate system in which the z-axis is parallel to the crystallographic b-axis and the x-axis is parallel to the N–N bond direction, their polar angles are (θ z =37°, φ z =206°), (θ x =59°, φ x =-11°) and (θ y =72°, φ y =90°). The principal z -axis is not coincident with the lone-pair direction and the angle between them was 33°. The bond angles \(\angle\text{H--N--H}{=}90\)°, \(\angle\text{N--N--H}{=}106\)° are calculated by neglecting the ionicity of the N–H bond as well as the N–N bond.