Ligações hidrogênio fortes em ácidos dicarboxílicos e diaminas aromáticas
Strong hydrogen bonds in dicarboxylics acids and aromatics diamines
| dc.creator | Rodrigues, José Augusto R. | |
| dc.date | 2000-12-01 | |
| dc.date | 2014-07-17T14:50:30Z | |
| dc.date | 2015-11-26T11:57:47Z | |
| dc.date | 2014-07-17T14:50:30Z | |
| dc.date | 2015-11-26T11:57:47Z | |
| dc.date.accessioned | 2018-03-28T21:00:37Z | |
| dc.date.available | 2018-03-28T21:00:37Z | |
| dc.identifier | Química Nova. Sociedade Brasileira de Química, v. 23, n. 6, p. 812-817, 2000. | |
| dc.identifier | 0100-4042 | |
| dc.identifier | S0100-40422000000600015 | |
| dc.identifier | 10.1590/S0100-40422000000600015 | |
| dc.identifier | http://dx.doi.org/10.1590/S0100-40422000000600015 | |
| dc.identifier | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000600015 | |
| dc.identifier | http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/23450 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/23450 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1238836 | |
| dc.description | 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. | |
| dc.description | 812 | |
| dc.description | 817 | |
| dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
| dc.language | pt | |
| dc.publisher | Sociedade Brasileira de Química | |
| dc.relation | Química Nova | |
| dc.rights | aberto | |
| dc.source | SciELO | |
| dc.subject | short-strong hydrogen bond | |
| dc.subject | hydrogen maleate | |
| dc.subject | hydrogen malonates | |
| dc.subject | proton sponge | |
| dc.title | Ligações hidrogênio fortes em ácidos dicarboxílicos e diaminas aromáticas | |
| dc.title | Strong hydrogen bonds in dicarboxylics acids and aromatics diamines | |
| dc.type | Artículos de revistas |