1430238-18-8Relevant articles and documents
Synthesis, characterization and coordination chemistry of aminophenylbenzothiazole substituted 1,4,7-triazacyclononane macrocycles
Barreto, José,Venkatachalam, Taracad K.,Joshi, Tanmaya,Kreher, Ute,Forsyth, Craig M.,Reutens, David,Spiccia, Leone
, p. 128 - 138 (2013/06/05)
The synthesis and spectroscopic characterization of four new 2-(4-aminophenyl)benzothiazole substituted 1,4,7-triazacyclononane derivatives with and without appended pyridyl groups on the macrocycle is reported: 1-(2-(4-aminophenyl)benzothiazolyl)-2-oxoethyl)-1,4,7-triazacyclononane (L1), 1-(2-(4-aminophenyl)benzothiazolyl)-2-oxoethyl)-4-(2-pyridylmethyl)-1,4, 7-triazacyclononane (L2), 1-(2-(4-N-methylaminophenyl)benzothiazolyl)-2- oxoethyl)-4-(2-pyridylmethyl)-1,4,7-triazacyclononane (L3), 1,4-bis(2- pyridylmethyl)-7-(2-(4-aminophenyl)benzothiazolyl)-2-oxoethyl)-1,4, 7-triazacyclononane (L4). The ligands have been applied in the synthesis of a series of copper (II) complexes, [Cu(L1)(OH2)](ClO4) 2·0.5ACN (C1), [Cu(L3)](ClO4)2· ACN (C2) and [Cu(L4)(OH2)](ClO4)2·0.5THF (C4) whose structures have been determined by X-ray crystallography. As commonly observed for Cu(II) complexes of 1,4,7-triazacyclononane derivatives, the geometry of the metal centre ranges from distorted square pyramidal to pseudo-octahedral. Notably, the amide carbonyl coordinates to the copper(II) centre in C1 and C2 but not in C4 where the presence of an additional pyridyl group results in an N5 coordination sphere.
