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The RuCl3(dppb)H2O complex: A new metal-assisted oxidative dehydrogenation of the o-phenylenediamine ligand |
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| Authors: | Ana Lúcia R Silva Marcelo O Santiago Izaura CN Digenes Solange O Pinheiro Eduardo E Castellano Javier Ellena Alzir A Batista Fbio B do Nascimento Ícaro S Moreira |
| Affiliation: | aDepartamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Cx Postal 12200, 60455-760 Fortaleza, CE, Brazil;bInstituto de Física de São Carlos, USP, Cx Postal 780, 13560-250 São Carlos, SP, Brazil;cDepartamento de Química, Universidade Federal de São Carlos, Cx Postal 676, 13.565-905, São Carlos, SP, Brazil |
| Abstract: | The trans-RuCl2(dppb)(bqdi)] and trans-RuCl2(dppb)(opda)] complexes (dppb = 1,4-bis(diphenylphosphine)butane, bqdi = o-benzoquinonediimine, and opda = o-phenylenediamine) were synthesized from the reaction of the mer-RuCl3(dppb)(H2O)] aqua-complex with the opda ligand. The X-ray structural and electrochemical characterizations of the isolated compounds showed that this aqua-complex induces the oxidative dehydrogenation of the amine species (opda) to the imine form (bqdi) of the o-phenylene ligand during the synthetic procedure. In the presence of oxygen, the 31P{1H} NMR experiments confirmed that the trans-RuCl2(dppb)(bqdi)] complex is the only product formed. |
| Keywords: | Ruthenium complexes 1 4-Bis(diphenylphosphine) o-Phenylene ligands X-ray structures |
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