Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/106996
Type: Artigo de periódico
Title: Strong Hydrogen Bonds In Dicarboxylics Acids And Aromatics Diamines [ligações Hidrogênio Fortes Em ácidos Dicarboxílicos E Diaminas Aromáticas]
Author: Rodrigues J.A.R.
Abstract: A very short-strong hydrogen bond (<2 Å, >20kcal/mol) is found in the monoanion of certain dicarboxylic acids derived from maleic and dialkylmalonic acids. Certain aromatic diamines that are known as proton sponge have exceptionally high basicity (pKa) and are only monoprotonated with strong acids like percloric acid. The closed proximity between the two basic centers provokes a strong steric interaction that is relieved upon protonation. Similar effects are found in dicarboxylic acids (hydrogen maleate and hydrogen dialkylmalonates) that present a very short distance between the two oxygens and a short-strong hydrogen bond.
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Rights: aberto
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0347367351&partnerID=40&md5=6fb6310a8aeeedd02ee93036f6f55fa8
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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