Technetium complexes with triazacyclononane

Henrik Braband; Ulrich Abram

doi:10.1021/ic060569m

Technetium complexes with triazacyclononane

Inorg Chem. 2006 Aug 21;45(17):6589-91. doi: 10.1021/ic060569m.

Authors

Henrik Braband¹, Ulrich Abram

Affiliation

¹ Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstrasse 34-36, D-14195 Berlin, Germany.

PMID: 16903709
DOI: 10.1021/ic060569m

Abstract

[NBu4][TcOCl4] reacts with ethylene glycol and 1,4,7-triazacyclononane (tacn) in MeOH under the formation of the deep-blue oxotechnetium(V) cation [TcO(OC2H4O)(tacn)]+, which can readily be oxidized by air to give the stable technetium(VII) compound [TcO3(tacn)]+. The reaction with aqueous HCl results in reduction and the formation of the cationic technetium(III) complex [TcCl2(OH2)(tacn)]Cl. The products were isolated in crystalline form and studied spectroscopically and by X-ray diffraction.