Vibrational spectra of η⁵-cyclopentadienyldicarbonyl(thiocarbonyl)-manganese(I) and η⁵-cyclopentadienylcarbonyl(dithiocarbonyl)-manganese(I)

Abstract

The ir and laser Raman spectra of η5-C5H5Mn(CO)2(CS) and η5-C5H5Mn(CO)(CS)2 have been investigated. In the case of the monothiocarbonyl complex, vapor phase, solution, and solid-state measurements were made, while for the dithiocarbonyl, only solid-state data were obtained. The vibrational spectra of both complexes have been assigned satisfactorily in terms of the C5v and Cs local symmetries of the η5-C5H5—Mn and Mn(CO)2(CS) (or Mn(CO)(CS)2) moieties, respectively. The effect of change of state on the spectra of the monothiocarbonyl complex is discussed.

Manganese−Chalcocarbonyl Bond Strengths from Threshold Photoelectron Photoion Coincidence Spectroscopy

“…CpMn(CO) 2 CS and CpMn(CO) 2 CSe, which are air-sensitive, yellow, crystalline solids, have been studied by 13 C NMR , and mass spectrometry. , Several IR experiments were carried out on the thiocarbonyl complex. − The first He I photoelectron spectrum (PES) of CpMn(CO) 2 CS was taken by Lichtenberger and co-workers . Recently, we have carried out a He I and He II PES study of this compound and, with the aid of quantum mechanical calculations, proposed a new ordering of the molecular energy levels and, thus, a new assignment for the PE spectrum…”

Carbene-carbene rearrangements in solution

“…* 12 (11), and 3-methylcycloheptatrienylidene (7), when generated from their tosylhydrazone salts, give fluorene (6), styrene, and benzocyclobutene (9), respectively.8…”