From the assignment of more than 30 vibronic transitions from the 701 9 (0,0,0) ground state to the B-1(1),K' = 1(v(1)',v(2)',v(3)')excited states, the vibrational frequencies w(1)',w(2)',w(3)', the anharmonicity constants x(11) and x(22) and the mode-coupling constant x(23) of the lowest excited B-1(1) (K' = 1) state of (LiOLi)-Li-7-O-16-Li-7 have been determined. (C) 2002 Elsevier Science B.V. All rights reserved.