Organometallic compounds mass spectroscopy

Gas chromatography and mass spectroscopy (GC/MS) of inorganic and organometallic compounds, 18 273-276 Gaseous hydroxides, 5 215-258 dimerization of, 5 224 mass spectrometric study of, 5 220-225 metalic, 5 220 nonmetallic, 5 217-220 study of in oxyhydrogen flame, 5 225-226 types of, 5 215-217 Gases, see also specific substances high ternperamre species from, 14 137-139 thermal decomposition of, 17 90-93 Gas phase electron resonance spectra, of sulfur and selenium fluorides, 24 190... 

In recent years, the widespread introduction of high-resolution instruments has made mass spectrometry a routine tool of the same utility in organic chemistry as IR or NMR spectroscopy. However, it is only within the last year or two that systematic investigations into the behavior of organometallic compounds in the mass spectrometer have started to be reported. This review is an attempt to summarize many of the results obtained. 

Chapter 14 discusses the very useful technique of thin layer chromatography. It has extensive applications in the analysis of complex mixtures of organic compounds and also has found limited applications in the analysis of organometallic compounds. No applications to anions and cations have been reported to date. The technique can also be used to prepare extracts suitable for subsequent examination by infrared spectroscopy or mass spectrometry. 

Included for the first time in this section are books and surveys on spectroscopic techniques which are of great use to the organometallic chemist. In addition to the Chemical Society Specialist Periodical Reports on Spectroscopic Properties of Inorganic and Organometallic Compounds (B6.1) and Mass Spectrometry (B6.2), a series of Annual Reviews (volumes 1 or 2) or Reports (volume 3 onwards) on Nuclear Magnetic Resonance Spectroscopy contains surveys of or P NMR results appertaining to organo-transition metal complexes. 

Speciation of organometallic compounds containing Au and Ag, on the other hand, was paid only scant attention as a subject for analytical research. The analytical methods that supported research on these compounds had to be dug out from the experimental sections of articles dealing with diverse aspects of chemistry, physics, biochemistry, etc. A review appeared on some of the antiinflammatory drugs shown in Table 1, discussing determination of Au in body fluids and pharmaceutical preparations, and speciation of the compounds and their metabolites. The methods included varieties of atomic absorption spectroscopy (AAS), varieties of neutron activation analysis (NAA), inductively coupled plasma spectrometry combined with mass spectrometric detection (ICP-MS),... 

Organometallic complexes of technetium-99 can be studied by the traditional physical tools used in chemistry. Techniques like infrared, multinuclear magnetic resonance, and mass spectroscopies, as well as magnetic susceptibility (to determine the number of unpaired electrons and thus the oxidation state) and X-ray crystallography are the main methods to study these complexes. X-ray diffraction methods are particularly important since only one small crystal is needed to determine the complete structure of the compound. 

Kiser, R. W., Mass Spectroscopy of Organometallic Compounds, Character Organumetal. Compounds 1 [1969] 137/211. 

R. W. Kiser, in Mass Spectroscopy of Organometallic Compounds, Characterization of Organometallic Compounds (M. Tsutsui, ed.). Part I, Interscience, New York (1969). 

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