Vibrational main group compounds

Other Inorganics. Inorganic species in solution have been studied very effectively by Raman spectroscopy. Work in this area includes the investigation of coordination compounds (qv) of fluorine (qv) (40), the characterization of low dimensional materials (41) and coordinated ligands (42), and single-crystal studies (43). Several compilations of characteristic vibrational frequencies of main-group elements have been pubflshed to aid in the identification of these species (44,45). 

Nomnetal fluorides and oxyfluorides have been studied by nearly every available modem spectroscopic and diffraction technique. This is due in part to the strong practical and theoretical interest in the stracture and reactivity of simple molecules of this type, the diversity of compounds that can be obtained, and their amenability to study by many different techniques. Many stractures of simple ffnorides and oxyfluorides have been determined by electron diffraction, microwave specttoscopy. X-ray diffraction, and vibrational analysis. For many chemists interested in the synthesis and reactivity of main group fluorides and derivatives, F NMR, IR, and Raman spectroscopy, and mass spectrometry are the indispensable routine tools of analysis. 

Characteristic Vibrations of Compounds of Main Group Elements 189... 

In compounds of main group elements, the band ranges from 870 to 1285 cm [6,102]. In transition metal compounds, it is observed from 810-1385 cm [50,53]. If the C=S double-bond character is low, as seen for a free dithiocarboxylate anion, the stretching shifts to lower wavenumbers [38,124]. This is also true for complexes where the dithiocarboxylate hgand is conjugated with an a,p-unsaturated double-bond, and/or complexes with a C=S - H hydrogen bond [50]. If the C=S double-bond character is high in the dithiocar-boxyUc acid salt, the vCS vibrations appear at 1100-1200 cm [82,95]. 

Nuclear Magnetic Resonance Spectroscopy Nuclear Quadrupole Resonance Spectroscopy Rotational Spectroscopy Characteristic Vibrations of Compounds of Main-group Elements Vibrational Spectra of Some Coordinated Ligands Mossbauer Spectroscopy Gas-phase Molecular Structures Determined by Electron Diffraction. Hardcover c. 470 pages ISBN 0 8S186 981 5... 

Characteristic Vibrations of Compounds of Main Group Elements Table 15 Vibrational assignments for CF3OVO2 (/cm ) 211... 

---