Abstract
ONE of the conclusions of a preceding paper1 was that the dissociation energy of the metal–carbon bonds decreases with the increasing mass number of the metal atom in the series (Alkyl)4C, (Alkyl)4Si, (Alkyl)4Ge, (Alkyl)4Sn and (Alkyl)4Pb, where Alkyl is CH3 or C2H5. This we attributed to the increasing bond polarizabilities. According to Lampe et al.2, there is a linear relationship between the polarizability and the total ionization cross-section. This relationship can be rationalized theoretically as follows.
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References
de Ridder, J. J., and Dijkstra, G., Rec. Trav. Chim., 86, 737 (1967).
Lampe, F. W., Franklin, J. L., and Field, F. H., J. Amer. Chem. Soc., 79, 6129 (1957).
Slater, J. C., in Quantum Theory of Matter, 388 (McGraw-Hill, New York, 1951).
Mott, N. F., and Massey, H. S. W., in The Theory of Atomic Collisions, 247 (Oxford Univ. Press, London, 1949).
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DE RIDDER, J., DIJKSTRA, G. Total lonization Cross-section of some Tetra Alkyl Metal Compounds. Nature 216, 260–261 (1967). https://doi.org/10.1038/216260a0
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DOI: https://doi.org/10.1038/216260a0
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