Accession Number : AD0659447

Title :   LOW FREQUENCY INFRARED SPECTRA OF ACETONITRILE AND ACRYLONITRILE DERIVATIVES OF CHROMIUM, MOLYBDENUM AND TUNGSTEN HEXACARBONYLS.

Descriptive Note : Technical rept. 1 Jun-31 Dec 66,

Corporate Author : CINCINNATI UNIV OHIO

Personal Author(s) : Farona,Michael F. ; Grasselli,Jeanette G. ; Ross,Bonnie L.

Report Date : AUG 1967

Pagination or Media Count : 17

Abstract : The infrared spectra of the complexes M(CO)6-n (L)n (M = Cr, W; L = CH3CN, n = 1, 2; L = CH2CHCN, n =1) and M(CO)3(CH3CN)3 (M = Cr, Mo, W) in the CsBr region were studied. The spectra of W(CO)6-n(CH3CN)n (n = 1, 2, 3) were investigated in the 400-100/cm region, and whereas three very weak bands are observed in the spectrum of W(CO)3(CH3CN)3 below 265/cm, the mono- and disubstituted derivatives exhibit no adsorption bands in the 400-100/cm region. For the mono- and disubstituted derivatives, all bands in the 700-265/cm region arise from metal-carbon stretching, MCO bending and CCN bending; and no metal-nitrogen stretching bands could be assigned. However, for M(CO)3(CH3CN)3 metal-nitrogen stretching vibrations are assigned at 552, 495/cm (Cr); 533, 481/cm (Mo); and 538, 489/cm (W). The bands below 265/cm in the spectrum of W(CO)3(CH3CN)3 were tentatively assigned to WNC bending modes. (Author)

Descriptors :   (*COMPLEX COMPOUNDS, *INFRARED SPECTROSCOPY), (*NITRILES, COMPLEX COMPOUNDS), (*METAL CARBONYLS, COMPLEX COMPOUNDS), ACETONITRILE, CHROMIUM COMPOUNDS, MOLYBDENUM COMPOUNDS, TUNGSTEN COMPOUNDS, BAND SPECTRA, INFRARED SPECTRA

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE