Microwave spectrum of SiH3CCH in the 4ν10 state

Abstract

The microwave spectrum of silyl acetylene in the 4ν10 state has been investigated from 29 to 79 GHz. After an assignment by graphical methods deduced from approximate analytical formulas, molecular constants have been determined through an analysis by direct diagonalization. Some slight anomalies appear. A comparison is made between the constants of the different nν10 states.