𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The negative ion mass spectra of mixtures of sulphur and organic compounds. I—The formation of [M+Sn]− from the mixture of sulphur and dinitriles

✍ Scribed by Yukio Hirata; Kozo Matsumoto; Tsugio Takeuchi

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
286 KB
Volume
9
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The negative ion mass spectra of sulphur, dinitriles and their mixtures were studied. The abundance of negative ions of sulphur was almost comparable to that of positive ions. In the negative ion mass spectrum of a mixture of sulphur and dinitrile, intense and characteristic peaks of [M + S~n~]^−^ (n = 2, 3, 4, etc.) were observed resulting from ion–molecule association of dinitrile with the S~n~^−^ anions. As a standard sample of a negative ion mass spectrum, sulphur itself has proved useful in the lower mass region (below m/e 256: S~8~^−^).

📜 SIMILAR VOLUMES

Formation of an unusual MH− ion in the m
Formation of an unusual MH− ion in the methane negative-ion chemical ionization mass spectra of chlorprothixene and aromatic sulfur compounds
✍ Patrick S. Callery; William A. Garland; Elaine K. Fukudat 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 487 KB

The methane negative-ion chemical ionization (NCI) mass spectrum of chlorprothixene shows an unusual MHion. This ion can be accounted for by electron capture followed by H transfer from the reagent gas. The most probable site of electron attachment was concluded to be related to the sulfur atom of t

The Negative Ion Mass Spectra of [M–H]−
The Negative Ion Mass Spectra of [M–H]− Ions Derived From Caeridin and Dynastin Peptides. Internal Backbone Cleavages Directed Through Asp and Asn Residues
✍ Simon T. Steinborner; John H. Bowie 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 207 KB 👁 1 views

The collision-induced spectra of [M-H] -ions of peptides containing Asp and Asn residues exhibit characteristic backbone cleavage ions produced via the enolate anions of the Asp or Asn side chains. Such reactions do not occur from the analogous Glu or Gln residues. Asp and Asn residues may be distin