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Superbases in the gas phase: Amidine and guanidine derivatives with proton affinities larger than 1000 kj mol −1
Author(s) -
Decouzon M.,
Gal J.F.,
Maria P.C.,
Raczyńska E. D.
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290070708
Subject(s) - chemistry , affinities , amidine , guanidine , proton , proton affinity , gas phase , phase (matter) , mole , computational chemistry , stereochemistry , organic chemistry , protonation , ion , physics , quantum mechanics
By building a relative basicity ladder, the current basicity scale (Lias et al., J. Phys. Chem. Ref. Data , 17 Suppl. No. 1 (1988)) has been reexamined in its upper part, and extended for organic compounds (amenable to proton transfer measurements) up to proton affinity, PA = 1050 kJ mol −1 . Structural effects involved in superbasicities are briefly discussed and routes to further extension of the gas‐phase basicity scale for organic compounds are proposed.