Journal
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
Volume 943, Issue 1-3, Pages 168-177Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.theochem.2009.12.013
Keywords
Conceptual density-functional theory; Leaving group; Nucleofugality; Fukui function
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Funding
- NSERC graduate fellowship
- Prestige scholarship
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Guided by experimentally observed solvolysis rates, 66 different reactivity indicators for predicting the quality of organic leaving groups are tested. None of these indicators is completely satisfactory. Most of the proposed indicators work well when the leaving group is a halogen, but poorly in the other cases (carboxylates, sulphates, phosphinates). This suggests that it is very difficult to devise simple reactivity indicators for the intrinsic quality of a leaving group, and supports recent work on molecule-dependent models for nucleofugality. (C) 2009 Elsevier B.V. All rights reserved.
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