Ab initio potential energy and dipole moment surfaces of the F-(H2O) complex

We present full-dimensional, ab initio potential energy and dipole moment surfaces for the F-(H2O) complex. The potential surface is a permutationally invariant fit to 16,114 coupled-cluster single double (triple)/aVTZ energies, while the dipole surface is a covariant fit to 11,395 CCSD(T)/aVTZ dipole moments. Vibrational self-consistent field/vibrational configuration interaction (VSCF/VCI) calculations of energies and the IR-spectrum are presented both for F-(H2O) and for the deuterated analog, F-(D2O). A one-dimensional calculation of the splitting of the ground state, due to equivalent double-well global minima, is also reported. (C) 2013 Elsevier B.V. All rights reserved.