Carbonyl spectra

Braterman, P. S. In Metal Carbonyl Spectra Academic Press London, 1975, pp. 177-227. 

A deconvolution procedure to separate carbonyl spectra of species A and species B has been performed, and It has been shown that species B Is associated with rotational wings above and below 2140 cm l. These wings Indicate that species B undergoes llbratlonal and rotational motions It Is undoubtedly very much like C0(1), as shown by the comparison made In Fig. 12. Here the spectrum of a freely rotating C0(g) molecule at 80K Is compared to C0(i), also at 80K. 

Braterman PS (1975) Metal carbonyl spectra. Academic, London... 

The NMR spectra of the resulting poly(MMA/MAA) and prepolymers show that the carbonyl spectra of the prepolymer and the tin-stripped polymer are nearly identical. The syndiotactic com-positonal triads are assigned in Figure 5 with A representing the free acid centered triad and B representing the methyl ester centered triad. The ratio of the intensities of the A-centered triad are approximately correct for a random composition. 

P. S. Braterman, Metal Carbonyl Spectra, p. 169. Academic Press, New York, 1975. 

Braterman, P. S., "Metal Carbonyl Spectra", Academic Press New York, 1975 PP- 179-185. 

Braitsch, D. M. (1974). J. Chem. Soc., Chem. Commun. 460 Braterman, P. S. (1975). Metal Carbonyl Spectra. Academic Press, New York Briegleb, G. (1961). Elektronen-Donator-Acceptor-Komplexe. Springer-Verlag, Heidelberg... 

Carbonyl spectra continne to be nsed to analyze a jit bonding effects and to monitor the processes taking place where CO gronps are involved. Thronghont the 1990s and into the new centnry, the nnmber of stndies dealing with Re(CO)3(N-N)X complexes assumed plague proportions and each carried with it a more or less detailed description of the v(CO) bands. 

The resulting sample showed IR carbonyl spectra (Fig. 34) identical to those of [TMBA]2[Rh4Fe2(CO)i6] in CHjCN solution or deposited on NaY zeolite, whose IR carbonyl absorptions are 2093(s), 2044(w), 1985(w), 1744(m), 1705(s), and 1698(w) cm" Rh K- and Fe K-edge EXAFS studies are under way to unravel their structures and Fe/Rh metal stoichiometries. 

Figure 1. Room-temperature IR carbonyl spectra taken from C0/Ni/Al203 in presence (a) and absence (b) of the gas phase.

Figure 2. Low-temperature IR carbonyl spectra taken from CO/Ni/ AI2O3 following CO adsorption at 160 K and subsequent desorption at the temperatures indicated.

Figure 3. IR carbonyl spectra taken at 160 K from CO adsorbed on hydrogen-covered (a) and hydrogen-free (b) catalyst surfaces.

For a detailed discussions of IR spectroscopy in metal carbonyls, see F.A. Cotton and G. Wilkinson (1988) Advanced Inorganic Chemistry, 5th edn, Wiley Interscience, New York, p. 1034 P.S. Braterman (1975) Metal Carbonyl Spectra, Academic Press, New York. 

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