![]() ![]() The amount of waste generation has been increasing with a significant amount being landfilled. ![]() It consists of six exercises (Exercises 5–10) which are composed of six pairs of infrared and Raman spectra, two single infrared spectra plus a very old infrared prism reference spectrum. This chapter completes the discussions of hetero-atom group frequencies which started in Chapter 7.Exercise Section II which follows Chapter 10 requires a review of Chapters 7–10.Exercise Section II is focused on developing experience at interpreting the spectra of organic systems possessing hetero-atom functional groups. The latter system (S=O stretch) is examined in detail because considerable information about the local environment of the S=O system can be extracted from the vibrational spectra. A discussion of stretching modes considers SH, CS and SS, and S=O groups. It can provide considerable information about the environment of the P=O group.Sulfur derivatives behave in a manner similar to phosphorous compounds. The P=O stretch is discussed in some detail. With the exception of the XH stretches derived from these elements and the nitroso (NO) and nitrite groups (ONO), the large majority of the group frequencies associated with these elements fall below 1500 cm−1 in the fingerprint region of the spectrum.The more important of the silicon group frequencies are associated with SiH stretches, the SiCH3 methyl deformations, a mixed SiCH3 stretch and the SiOSi antisymmetric stretch.Phosphorous compounds are examined in much the same fashion as the silicon systems. Chapter 10 is concerned with functional groups that contain NO bonds or Si, P, S or the halogen atoms. ![]()
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