Determination of the skeletal bending potential function for SiH 3NCO from the microwave spectrum

The rotation-bending-torsion Hamiltonian (M. Krȩglewski, J. Mol. Spectrosc., in press) is used to simultaneously fit observed rotational transitions (J. A. Duckett, Ph.D. thesis, University of Reading, 1976) of silyl isocyanate SiH ₃NCO in 18 vibrational states involving excited quanta of the ν₁₀ SiNC skeletal bending mode. The effective SiNC bending potential energy function and the geometry of the molecule in the small amplitude vibrational ground state are determined from the microwave data.