Electronic structures of highly symmetrical compounds of f elements XLIII: Parametric analysis of the absorption spectrum of tris(bis(trimethylsilylamido))dysprosium(III) (Dy(btmsa)3)

From the low temperature absorption spectra of Dy(btmsa)3, a truncated crystal field (CF) splitting pattern was derived, and simulated by fitting the free parameters of a phenomenological Hamiltonian. The title compound shows strong spectrochemical, nephelauxetic and relativistic nephelauxetic effects. The experimentally based non-relativistic molecular orbital scheme (in the f range) of Dy(btmsa)3 is set up.