Mass spectra of several acylgermanes

Vitkovskii, V. Yu.; Bravo‐Zhivotovskii, Dmitry; Pigarev, S. D.; Vyazankina, O. A.; Vyazankin, N. S.

doi:10.1007/bf00954109

Cited by 2 publications

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“…In close correspondence to this, the peak of Li 4 R 3 + is one of the most intense ones (besides RLi 2 + ) in the mass spectra of tetrameric alkyllitium compounds, indicating a preferred dissociation pathway. Thus, the appearance energy determination for t -Bu 3 Li 4 + of Vitkovskii et al, 8.1 eV, seems less accurate than that in McLean's work . (The change of slope in the photoionization yield curve at 8.1 eV has been assigned to the dissociation of an autoionized molecule ion by the latter authors.)…”

Section: Discussionmentioning

confidence: 80%

He(I) Photoelectron Spectroscopy and Electronic Structure of Alkyllithium Clusters

et al. 2000

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The electronic structure of some alkyllithium clusters has been investigated by He(I) photoelectron spectroscopy. Two distinct types of spectra have been observed. This is explained by the different degree of association of the compounds in the gas phase, as determined by the steric demand of the alkyl substituent. From the analysis of the spectra it can be concluded that isopropyl-(i-PrLi), sec-butyl-(s-BuLi), and tert-butyllithium (t-BuLi) form only tetramers, while ethyl-(EtLi), n-propyl-(n-PrLi), n-butyl-(n-BuLi), and isobutyllithium (i-BuLi) are mixtures of tetrameric and hexameric clusters in the gas phase. This observation is in accord with former mass spectrometric investigations [Plavs ˇic ´, D.; Srzic´,

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Section: Discussionmentioning

confidence: 80%