Equilibrium structure and force field of NH2

The anharmonic force field up to quartic terms and the spectroscopic parameters of NH2 were calculated by the coupled cluster electron correlation technique using augmented correlation-consistent polarized core-valence basis sets of quadruple zeta quality (aug-cc-pCVQZ). The equilibrium geometry and the heat of formation were calculated using a basis set of aug-cc-pCV5Z quality: r(e)(N-H) = 1.0238(10) Angstrom, angle(HNH) = 103.12(10)degrees and Delta(f)Hdegrees (298.15 K) = 184.9 kJ mol(-1). The results were compared with available experimental data and the results of previous calculations.