The smaller intervals (289 cm -1 ) between the peaks k-m reflect excitations of the out-of-plane wagging mode of NH2 (v7 = 318 cm -1 ), while the large spacing among peaks m-o arises from excitation of the pseudorotational mode of HF coupled with out-of-plane wagging of NH2 (v6). In addition, the NH2-HF mode (ν8) might also be involved. The wavefunctions for features at higher energies (p-t) display even more complex nodal structure, but all involving a higher HF vibrational excitation. In particular, the wavefunction corresponding to feature p displays four nodes along rHF, indicating resonances with vHF = 4.