Isotopomers, halide

The CAS Registry numbers for the carbonyl halides, and their principal isotopomers, are given in Table A3.1. Synonyms and foreign language equivalents for phosgene are given in Table A3.2, and for carbonyl difluoride in Table A3.3. 

At very high fields (> 4.7 T), C1/ C1 and Br/ Br Isotop-omers are resolvable (17) and, in principle, the number of halide ions bound to Pt can be deduced from the isotopomer splitting pattern. In practice, the shifts (0.167 ppm for Cl, 0.028 ppm for Br) are too small in comparison with the temperature dependence of Pt shifts (0.3-1 ppm per C rise in temp.) and natural line-widths of many complexes. Temperature gradients across samples are particularly marked when large sample tubes and decoupling are used. 

Table 6.1. Gaseous heteronuclear diatomic molecules AB(g) hydrogen halides HX interhalogen compounds XK alkali metal hydrides MH, and inter-alkali-metal compounds MM. Electric dipole moments, ionic characters, qjc equilibrium bond distances. Re, vibrational wavenumbers, < dissociation energies at zero K, Dq rednced masses of the predominant isotopomers, /tm and force constants,. ...

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