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Vibrational spectra and force constants of [Cr(NH3)6]3+, [Co(NH3)6]3+, [Cu(NH3)4]2+, and [Pd(NH3)4]2+ w

1974; Elsevier BV; Volume: 22; Issue: 3 Linguagem: Inglês

10.1016/0022-2860(74)85004-0

1872-8014

K. Schmidt, Achim Müller,

Inorganic Fluorides and Related Compounds

The vibrational spectra of [50Cr(NH3)6]3+, [53Cr(NH3)6]3+, [Co(NH3)6]3+ [Co(ND3)6]3+, [63Cu(NH3)4]2+, [65Cu(NH3)4]2+, [Cu(ND3)4]2+, [104Pd(NH3)4]2+, and [110Pd(NH3)4]2+ have been recorded. The measured isotope shifts could be used to solve some assignment problems (e.g. to distinguish between the in-plane and out-of-plane deformation vibrations of [Cu(NH3)4]2+ and [Pd(NH3)4]2+). Reliable force constants for the MX6 and MX4 skeletons (X = NH3) could be calculated from Raman and infrared data of the isotopically substituted ions using the point mass model.