ISSN:
0894-3230
Keywords:
Organic Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The superbase gas-phase scale has been further extended up to proton affinities of ca 1080 kJ mol-1 by use of cyclic and acyclic guanidines and vinamidines. Structural features such as Y-conjugation, vinylogy and intramolecular ionic hydrogen bonding leading to their superbasic behaviour are analysed. Solvation effects by water and acetonitrile on basicity are discussed. From a correlation pKa(acetonitrile) vs gas-phase basicity, proton affinity values in the range 1070-1410 kJ mol-1 are predicted for Schwesinger phosphazene compounds.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/poc.610071211