Electron Affinities and Gas-Phase Acidities of Organogermanium and Organotin Compounds

Elizabeth A. Brinkman; Karen Salomon; William Tumas; John I. Brauman

doi:10.1021/ja00122a022

Electron Affinities and Gas-Phase Acidities of Organogermanium and Organotin Compounds

Elizabeth A. Brinkman, Karen Salomon, William Tumas, John I. Brauman

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 ± 0.7 and 39.2 ± 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (ΔH°_acid) for the corresponding hydrides (Me₃GeH and Me₃SnH) have been bracketed as 361.5 ± 2.8 and 349 ± 2 kcal/mol. From the electron affinities and the acidities, the D°(Me₃MH) are derived as 79.8 ± 3.5 and 75 ± 3.5 kcal/mol, respectively. These physical properties are compared with the properties of the group IVA through group VIIA binary hydrides and methyl-substituted compounds. The electron affinities of the group IVA compounds do not conform to the regular pattern; some of the reasons for this are discussed.

Original language	English
Pages (from-to)	4905-4910
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	117
Issue number	17
DOIs	https://doi.org/10.1021/ja00122a022
Publication status	Published - May 1995

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja00122a022

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title = "Electron Affinities and Gas-Phase Acidities of Organogermanium and Organotin Compounds",

abstract = "The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 ± 0.7 and 39.2 ± 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (ΔH°acid) for the corresponding hydrides (Me3GeH and Me3SnH) have been bracketed as 361.5 ± 2.8 and 349 ± 2 kcal/mol. From the electron affinities and the acidities, the D°(Me3MH) are derived as 79.8 ± 3.5 and 75 ± 3.5 kcal/mol, respectively. These physical properties are compared with the properties of the group IVA through group VIIA binary hydrides and methyl-substituted compounds. The electron affinities of the group IVA compounds do not conform to the regular pattern; some of the reasons for this are discussed.",

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T1 - Electron Affinities and Gas-Phase Acidities of Organogermanium and Organotin Compounds

AU - Brinkman, Elizabeth A.

AU - Salomon, Karen

AU - Tumas, William

AU - Brauman, John I.

PY - 1995/5

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N2 - The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 ± 0.7 and 39.2 ± 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (ΔH°acid) for the corresponding hydrides (Me3GeH and Me3SnH) have been bracketed as 361.5 ± 2.8 and 349 ± 2 kcal/mol. From the electron affinities and the acidities, the D°(Me3MH) are derived as 79.8 ± 3.5 and 75 ± 3.5 kcal/mol, respectively. These physical properties are compared with the properties of the group IVA through group VIIA binary hydrides and methyl-substituted compounds. The electron affinities of the group IVA compounds do not conform to the regular pattern; some of the reasons for this are discussed.

AB - The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 ± 0.7 and 39.2 ± 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (ΔH°acid) for the corresponding hydrides (Me3GeH and Me3SnH) have been bracketed as 361.5 ± 2.8 and 349 ± 2 kcal/mol. From the electron affinities and the acidities, the D°(Me3MH) are derived as 79.8 ± 3.5 and 75 ± 3.5 kcal/mol, respectively. These physical properties are compared with the properties of the group IVA through group VIIA binary hydrides and methyl-substituted compounds. The electron affinities of the group IVA compounds do not conform to the regular pattern; some of the reasons for this are discussed.

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