A global fit of all currently available rotation-vibration energies ha
s been made for 24 vibrational states of the (H2Se)-Se-80 molecule. Th
e resulting set of 112 parameters reproduces the initial 3516 vibratio
n-rotation energies with a mean accuracy of 10.6 x 10(-3) cm(-1). Usin
g this model as a starting point, the rotational fine structure of the
extremely weak local mode bands (13(+); 1)/(13(-); 1) and (06(+), 0)/
(06(-); 0) could be analyzed; the results are discussed. (C) 1998 Acad
emic Press.