Ag+ transfer across the water/1,2-dichloroethane interface facilitated by complex formation with tetraphenylborate derivatives

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

Cacote, MHM (Autor) Outra; Pereira, CM (Autor) FCUP; Tomaszewski, L (Autor) Outra; Girault, HH (Autor) Outra; Silva, F (Autor) FCUP

Revista

Título: Electrochimica Acta

Vol. 49

Páginas: 263-270

ISSN: 0013-4686

Editora: Elsevier

Indexação

ISI Web of Knowledge - 29 Citações

Scopus - 27 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-000-BYN

DOI: 10.1016/j.electacta.2003.08.008

Abstract (EN): The assisted transfer of silver ion, Ag+, by complexation of Ag+ with the tetrakis(4-chlorophenyl)borate (TPBCl-) anion was studied at the interface between two immiscible electrolyte solutions (ITIES). The elucidation of the interfacial mechanisms employed the cyclic voltammetry technique applied to macro and micro liquid/liquid interfaces. This procedure allowed to identify Ag+ as the species which is transferred at the liquid/liquid interface and also the formation of an 1:2 metal:ligand complex when TPBCl- is in excess. The value for the formal transfer potential of silver(I) from aqueous to 1,2-dichloroethane was evaluated and the association constant for the [Ag(TPBCl)(2)](-) complex was determined.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8