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[Spectral study on the self-polymerizing reaction of N-diisopropyl phosphoryl amino acids]

L Han1, S Zhao, Y Zhou

  • 1Department of Physics, Tsinghua University, 100084 Beijing.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|April 7, 2005
PubMed

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In mass spectroscopy, amines undergo fragmentation to give parent ions with odd molecule weights. This observed mass spectrum follows the nitrogen rule; a molecule with an odd number of nitrogen atoms produces a molecular ion with an odd molecular weight. Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit strong molecular ion peaks, but acyclic aliphatic amines show...