ISSN:
0030-493X
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Under positive ion chemical ionization conditions with ammonla at relatively low pressure, aromatic nitro compounds do not form [M + H]+ ions but often form ionic clusters [M + NH4]+ and [M + N2H7]+. Nitrobenzene forms a cluster [2M + NH4]+ and aniline, formed by nucleophilic substitution, leads to a cluster [anilinium ion + nitrobenzene]+. The dinitrobenzenes form [M + NH4]+ clusters and show evidence of nitroaniline formation and clustering. 1,3,5-Trinitrobenzene gives little indication of clustering or of substitution. The six isomers of trinitrotoluene appear to be stabilized by the methyl group and form clusters up to [M + N3H10]+. Nucleophilic substitution leads to dinitrotoluidines, which also form clusters with ammonium ions.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/oms.1210210707
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