BIBLIOS

Document type
Journal articles

Document subtype
Full paper

Title
Syntheses and crystal structures of benzene-sulfonate and -carboxylate copper polymers and their application in the oxidation of cyclohexane in ionic liquid under mild conditions

Participants in the publication
Susanta Hazra (Author)
INSTITUTO SUPERIOR TÉCNICO
Ana P. C. Ribeiro (Author)
INSTITUTO SUPERIOR TÉCNICO
M. Fátima C. Guedes da Silva (Author)
INSTITUTO SUPERIOR TÉCNICO
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Armando J. L. Pombeiro (Author)
INSTITUTO SUPERIOR TÉCNICO

Summary
The syntheses, crystal structures and catalytic activities of the polymers derived from 2-(2-pyridylmethyleneamino)\nbenzenesulfonic acid (HL), viz. [CuL(H2tma)]n (1) and [{Cu2L2(H2pma)}·(8H2O)]n (2) [H3tma =\nbenzene-1,3,5-tricarboxylic (trimesic) acid and H4pma = benzene-1,2,4,5-tetracarboxylic (pyromellitic)\nacid], are presented. Despite the comparable combinations and compositions of ligands (sulfonate and\ncarboxylate) in these two polymers the bridging moiety in 1 is sulfonate while in 2 it is carboxylate. Complexes\n1 and 2 act as catalysts in the peroxidative oxidation of cyclohexane under mild conditions using\neither the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [bmim][PF6] or acetonitrile as\nthe solvent. The ionic liquid medium leads to increases in the yields and in the turnover numbers,\nachieved in shorter reaction times in comparison with those when using the conventional acetonitrile\nsolvent. A simple recycling of the catalysts in the ionic liquid medium is achieved without loss of activity\nand selectivity.


Institution
UNIVERSIDADE DE LISBOA

Where published
Dalton Transactions

Publication Identifiers
ISSN - 1477-9226

Publisher
Royal Society of Chemistry (RSC)



Document Identifiers
URL - http://dx.doi.org/10.1039/c6dt02271e
DOI - https://doi.org/10.1039/c6dt02271e

Rankings
SCOPUS Q1 (2016) - 1.229 - Inorganic Chemistry
SCIMAGO Q1 (2016) - 1.229 - Inorganic Chemistry