Two-Center Three-Electron Bonding Involving Tellurium
| Autor: | Andreas J. Illies, Joseph E. King |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | The Journal of Physical Chemistry A. 108:3581-3585 |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/jp037769t |
| Popis: | The first known experimental studies of two-center three-electron bonding involving tellurium in the gas, liquid, or solid state are reported. Ions studied include: [(CH3)2Te∴Te(CH3)2]+, [(CH3)2Te∴Se(CH3)2]+, [(CH3)2Te∴S(CH3)2]+, and [(CH3)2Te∴ICH3]+. Metastable and collision-induced dissociation tandem mass spectrometry methods were employed to investigate the structures of the ions. The metastable spectra show direct cleavage of the Te∴Te, Te∴Se, Te∴S, and Te∴I bonds yielding product ions with the charge on the Te containing moiety (that with the lowest ionization energy). Collision-induced dissociation spectra show intense peaks for these same fragments. The collision-induced dissociation spectra also show peaks for almost every possible methyl loss, suggesting large collision-induced dissociation cross sections for the methyl losses and/or weak Te−CH3, Se−CH3, S−CH3, and I−CH3 bonds. These spectra are consistent with Te∴Te, Te∴Se, Te∴S, and Te∴I hypervalent interactions. Equilibrium experiments on (C... |
| Databáze: | OpenAIRE |
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