Synthesis and vibrational spectra of thiobutyrolactone and thiono-benzonaphthopyranones and their cyclopentadienyl ruthenium complexes
摘要:
The preparation of the thiobutyrolactone complexes [Cp(dppx)Ru-1]PF6 with dppx = dppm (la) and dppe (Ib) is described. Raman spectra of the polycrystalline solids and the CH2Cl2 solutions were recorded by means of the scanning multichannel technique and charge-coupled device detection. The results are reported with complementary IR data. Vibrational assignments are proposed for the compounds and the carbon-sulfur stretching vibrations have been assigned by means of polarized Raman measurements, Likewise, spectra of thiono-benzonaphthopyranones 2-4 and their complexes were recorded. Assignments are given for the lactones themselves and their ruthenium complexes.