Miguel E. Padilla-Tosta, J. Lloris, R. Martínez‐Máñez
Sep 2, 1999
Citations
0
Influential Citations
8
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The reaction of 2,2′:6′,2″-terpyridinyl-4′-carboxaldehyde with the diamine N-methyl-1,3-propanediamine yields the terpyridine derivative containing amino groups 1-(2,2′:6′,2″-terpyridin-4′-yl)-2,6-diaza-2-methylcyclohexane (L1), whereas under similar experimental conditions the reaction of 2,2′:6′,2″-terpyridinyl-4′-carboxaldehyde with N,N-dimethylethylenediamine yields the expected 1-(2,2′:6′,2″-terpyridin-4′-yl)-2,5-diaza-5-methyl-hexa-1-ene (L2) imine and the [4′-COO-tpy][H3NCH2CH2N(CH3)2] salt (L3). The crystal structure of L3 was determined by X-ray single-crystal analysis. The structure consists of terpyridine carboxylate and protonated diamines linked together by ionic and hydrogen bonding interactions. The homoleptic complexes [Co(L1)2]2+ and [Fe(L1)2]2+ have been prepared. These contain peripheral amino groups and their interactions with protons and the anions ATP, chloride, sulphate and phosphate have been studied in acetonitrile and in THF:water (70:30 v/v) using electrochemical techniques.