Monoxide and Carbon Monosulfide

Carbon Monoxide and Carbon Monosulfide.—It was stated in Chap- 

Thi3 resonating structure of the molecule would lead to the observed value of the electric dipole moment if each bond (including the bent bonds) had 10 percent partial ionic character. This amount of ionic character is somewhat less than the amount given in Table 3-10 as that applying to a carbon-oxygen bond (22 percent). We conclude that the structure derived from the observed bond length is compatible with the observed electric dipole moment, to within the uncertainty of the calculation. 

The bond length in C8 has been determined by microwave spectros-copy to be 1.535 A, which corresponds to bond number 2.4. Another vcb t for th - bend number can be derived from the observed values6 lAi D .he electric dipole moment. Carbon and sulfur have the electronegativity, and accordingly the dipole moment arises entirely from the uhTerence in the contributions of the two structures 

The bond number 2.27 corresponds with independent resonance of the 

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Whereas the diatomic molecules carbon monoxide and carbon monosulfide can readily be synthesized, attempts to isolate the analogous carbon monoselenide... 

Raine, G. P., H. F. Schaefer III, and R. C. Haddon (1983). The dimers of carbon monoxide and carbon monosulfide. Chemically bound triplet electronic ground states. J. Am. Chem. Soc. 105, 194-98. 

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