Ontology type: schema:ScholarlyArticle
1998-11
AUTHORSR. M. Minyaev, A. G. Starikov, E. A. Lepin
ABSTRACTThe gradient pathways of the reactions of nucleophilic addition of H2O and HF molecules to formaldehyde in the gas phase and in the XH…H2CO…HC(O)OH complex (X=OH, F) were calculated by theab initio RHF/6-31G**, MP2(fc)/6-31G**, and MP2(full)/6-311++G** methods. Both reactions proceed concertedly. The formation of H-bonded bimolecular pre-reaction complexes is the initial stage of the gas-phase reactions; at the same time, no indications of the formation of stable π-complexes were found on the potential energy surfaces of systems under study. The calculated energy barriers to the gasphase reactions exceed 40 kcal mol−1, while those to reactions in the complex XH…H2CO…HC(O)OH (X=OH, F) become more than halved. More... »
PAGES2078-2086
http://scigraph.springernature.com/pub.10.1007/bf02494259
DOIhttp://dx.doi.org/10.1007/bf02494259
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