Vibrational Spectra and Bonding in Metal Carbonyls. II. Infrared Spectra of Amine-Substituted Group VI Carbonyls in the CO Stretching Region

1963 ◽  
Vol 2 (3) ◽  
pp. 533-540 ◽  
Author(s):  
C. S. Kraihanzel ◽  
F. A. Cotton
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Metal Carbonyls ◽  
Group Vi

ChemInform Abstract: 1,1,1-TRIS(HYDROXYMETHYL)PROPANEPHOSPHITE DERIVATIVES OF GROUP VI METAL CARBONYLS

1979 ◽  
Vol 10 (17) ◽  
Author(s):  
S. C. TRIPATHI ◽  
S. C. SRIVASTAVA ◽  
D. P. PANDEY ◽  
R. P. CHATURVEDI
Keyword(s):  
Metal Carbonyls ◽  
Group Vi ◽  
Derivatives Of

Studies in polymerization. XIII. The activated initiation of vinyl polymerization by metal carbonyls

1962 ◽  
Vol 268 (1335) ◽  
pp. 553-566 ◽  
Keyword(s):  
Kinetic Mechanism ◽  
Molybdenum Hexacarbonyl ◽  
Metal Carbonyls ◽  
Group Vi ◽  
Radical Intermediates ◽  
Vinyl Polymerization ◽  
Organic Halogen ◽  
Halogen Compounds ◽  
Iodine Compounds ◽  
Reaction Proceeds

It has been found that the hexaearbonyls of group VI metals in the presence of some organic halogen compounds are active initiators of vinyl polymerization. Molybdenum hexacarbonyl is the most active, and halogen compounds containing —CC1 3 , —CBr 3 are generally more effective than those with fewer halogen atoms joined to a single carbon. Fluorine and iodine compounds are inactive. A study has been made of the initiation of the polymerization of methyl methacrylate by the Cr(CO) 6 + CCl 4 system. The polymerization is markedly retarded by carbon monoxide. It is shown that the reaction proceeds through free-radical intermediates, and a kinetic mechanism for initiation is derived (equation (4)) leading to the expression (5) for the rate of chain starting. This quantity may be calculated from (5) with the aid of the numerical values in table 3. Kinetic observations are in satisfactory agreement with this mechanism. The nature of the participating reactions is discussed.

VIBRATIONAL SPECTRA OF SOME ALKYLARSONIUM COMPOUNDS

1965 ◽  
Vol 43 (12) ◽  
pp. 3193-3200 ◽  
Author(s):  
W. R. Cullen ◽  
G. B. Deacon ◽  
J. H. S. Green
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Vibrational Assignments

The infrared spectra of some tetramethyl-, tetraethyl-, and triethylmethyl-arsonium salts, and that of tetramethylstibonium triiodomercurate(II) have been recorded in the region 4 000 to 200 cm−1. Vibrational assignments are given for the quarternary 'onium cations, and comparisons are made with the spectra of alkylorganometallic compounds of germanium and tin.

THE VIBRATIONAL SPECTRA OF THE FORMATE, ACETATE, AND OXALATE IONS

1956 ◽  
Vol 34 (2) ◽  
pp. 170-178 ◽  
Author(s):  
K. Ito ◽  
H. J. Bernstein
Keyword(s):  
Aqueous Solution ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Vibrational Assignments ◽  
Oxalate Ions ◽  
Oxalate Ion ◽  
Depolarization Ratios

The infrared spectra of the formate, acetate, and oxalate ions have been obtained for both the solid and aqueous solution. The Raman spectra of these ions with depolarization ratios have been obtained in aqueous solution. Vibrational assignments have been made which differ slightly for the acetate ion and more markedly for the oxalate ion from earlier work. The depolarization ratios confirm Fonteyne’s assignment for the formate ion.

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