THE INFRARED SPECTRA OF TRANS-BIS(L-ALANINATO) COMPLEXES OF PLATINUM(II) AND PALLADIUM(II): BAND ASSIGNMENTS BY MULTIPLE ISOTOPIC LABELLING

Summary

The infrared spectra (4 000 − 140 cm⁻¹) of the L-alaninate complex trans-[Pt(L-ala)₂] and its ¹⁸ ( )-, ¹⁵ N, 2-d,3-d ₃- and N,N-d ₂-labelled analogues have been determined. Each spectral band has been assigned on the basis of the shifts induced by the various modes of isotopic labelling and by substitution of Pd(II) for Pt(II). The labelling study reveals that very few bands represent vibrationally-pure modes and that certain earlier assignments require revision.