Electric and magnetic properties of LiH X1Σ+ from analysis of pure rotational and vibration-rotational spectra

Pure rotational and vibration-rotational transitions (1530 lines) of LiH X (1)Sigma(+) in four isotopic variants are analyzed with a deformationally self-consistent procedure in an analytic version. Using a relation between nonadiabatic rotational effects and electric and magnetic properties of the molecule, we estimate a permanent dipole moment of mu(0) = 1.933(76)x 10(-29) Cm. electric polarity +LiH- and rotational g-factor g(0) = - 0.253(14) for (LiH)-Li-7-H-2 and g(0) = - 0.618(28) for (LiH)-Li-7-H-1. They conform acceptably with magnitudes from published experiments on Stark and Zeeman effects and from quantum-chemical calculations of electronic structure. (C) 1999 Elsevier Science B.V. All rights reserved.