Copper-(I) and -(II) complexes with tertiary linear polyamines of the type Me2NCH2(CH2NMeCH2) nCH2NMe2 (n = 1-4)

Gilad Golub, Haim Cohen, Piero Paoletti, Andrea Bencin, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

2,5,8,11-Tetramethyl-2,5,8,11-tetraazadodecane, 2,5,8,11,14-pentamethyl-2,5,8,11,14-pentaazapentadecane, and 2,5,8,11,14,17-hexamethyl-2,5,8,11,14,17-hexaazaoctadecane, form stable complexes with CuI in aqueous solutions. On the other hand 2,5,8-trimethyl-2,5,8-triazanonane, does not. This indicates that the stabilization of CuI by tertiary amine ligands in aqueous solutions requires at least four nitrogens. The electronic spectra and the electrochemical properties of the [CuLi]2+ complexes over a wide pH range were studied and potentiometric titrations were made of solutions containing equimolar concentrations of CuII and Li. The nature of the complexes present in these solutions is discussed.

Original languageEnglish
Pages (from-to)2055-2060
Number of pages6
JournalJournal of the Chemical Society. Dalton Transactions
Issue number10
DOIs
StatePublished - 21 May 1996

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