Identification of Fragments in Mass Spectra of Dialkyldiboranes

Wilson, Charles O.; Shapiro, I.

doi:10.1021/ac60157a023

Cited by 9 publications

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“…cm.2/sec., units of k (g./100 ml.)-1. 6 By Fujita's method, ref. It is felt that in the region of small £m and r, the method outlined here yields results for D which compare favorably with those of Fujita's method.…”

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A Modification of Fujita's Method for the Calculation of Diffusion Coefficients From Boundary Spreading in the Ultracentrifuge

Holde¹

1960

J. Phys. Chem.

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A Modification of Fujita's Method for the Calculation of Diffusion Coefficients From Boundary Spreading in the Ultracentrifuge

Holde¹

1960

J. Phys. Chem.

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“…The first observation of a kinetic isotope effect in a reaction of an organolithium compound is reported in the reaction of ethyllithium with benzyl chloride (509). Carbon isotope fractionation is observed during photosynthesis (884) • Isotopic labeling enables Wilson and Shapiro (515) to identify fragments and establish the occurrence of alkyl rearrangements in 18 dialkyldiboranes. The application of the Bigeleisen theory of the isotope effect to the hydrogen atom-formaldehyde reaction suggests a loosely bound activated complex (329).…”

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confidence: 99%

Mass Spectrometry

Reese¹

1962

Anal. Chem.

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The volume of literature on the subject of mass spectrometry continues to increase and is indicative of the usefulness of the technique in determining various parameters of chemical and physical significance. This review is intended to cover those articles appearing in the literature from January 1960 to November 1961. Momigny (357) reviews the subject in relation to the physical chemistry of molecules and Wagner (498) reviews it with respect to hydrocarbon reactions. The annual Japanese review appears by Tsuchiya, Hashizume, and Someno (486).

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Borverbindungen, IV. Massenspektren von niederen Bortrialkylen und ihre Diskussion

Henneberg

Damen

Köster

1961

Justus Liebigs Ann. Chem.

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Es werden die Massenspektren für verschiedene Bortrialkyle des Typs BR3 mit gleichen und verschiedenen Substituenten R am Bor angegeben (R = Methyl, Äthyl, n‐Propyl oder Isopropyl). Von den 20 möglichen Verbindungen wurden 14 gemessen. Die Verwendung eines Massenspektrometers hoher Auflösung gestattete die eindeutige Zuordnung von borhaltigen und borfreien Bruchstückionen. Durch Einbeziehung metastabiler Ionen können die wichtigsten Zerfallsreihen der Bortrialkyle erkannt werden. Die Erkenntnisse vermitteln, zusammen mit Betrachtungen an Molekülmodellen und Folgerungen aus den Massenspektren definiert deuterierter Bortrialkyle, wertvolle Hinweise auf Gesetzmäßigkeiten beim Zerfall der Moleküle, wobei insbesondere auf verschiedene Umlagerungsmechanismen eingegangen wird. Es lassen sich so auch Bortrialkyle identifizieren, von denen noch kein Massenspektrum vorliegt. Mit Hilfe der gewonnenen Eichspektren können komplizierte Gemische analysiert werden.

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Identification of Fragments in Mass Spectra of Dialkyldiboranes

Cited by 9 publications

References 9 publications

A Modification of Fujita's Method for the Calculation of Diffusion Coefficients From Boundary Spreading in the Ultracentrifuge

A Modification of Fujita's Method for the Calculation of Diffusion Coefficients From Boundary Spreading in the Ultracentrifuge

Mass Spectrometry

Borverbindungen, IV. Massenspektren von niederen Bortrialkylen und ihre Diskussion

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