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Evidence for the existence of phosphoazonium (iminophosphenium) and arsenoazonium ions in the gas phase by mass spectrometry

✍ Scribed by Jonathan M. Curtis; Neil Burford; Trenton M. Parks

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
400 KB
Volume
29
Category
Article
ISSN
1076-5174

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✦ Synopsis

The first evidence for the existence of the methylphosphoazonium (methyliminophosphenium) ion CH3NP+ and the methylarsenoazonium ion (named in this work) CH3NAs+ (analogues of the methyldiazonium ion CH,NN+) is provided using electron impact mass spectrometry. The ions are formed as fragment ions of some highly airsensitive phospholidinium and arsolidinium compounds that contain dicoordinate P and As centres. A combination of high-resolution mass measurements and high-and low-energy tandem mass spectra (fragment ion scans) suggest that the ions have N--C bonds rather than the isomeric azophosphonium (CH,PN+) or azoarsenonium (CH,ASN+) forms.

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