Christine A. Goodard
Oct 15, 1997
Citations
0
Influential Citations
5
Citations
Journal
Polyhedron
Abstract
Abstract The compound 2,6-diformyl-4-methylphenyl ( 1 ) has been made by hydrolysis of S -(2,6- diformyl-4-methylphenyl)dimethylthiocarbamate followed by oxidation with I 2 . Condensation of 1 with 4 equiv. of 3-dimethylaminopropylamine and subsequent reduction with Na/benzophenone results in the sodium salt of the Schiff base binucleating ligand 2,6-(bis(3-dimethylamino)-propyliminomethyl)-4-methyl-thiophenolate ( 2 , NaL). The ligand (L) binds 2 eq of Cu(I) and crystallizes from MeCN solution to give an air sensitive tetracopper(I) complex with the formula [Cu 4 L 2 (MeCN)](PF 6 ) 2 ( 3 )·0.5 MeCN·0.25 MeOH as determined by X-ray crystallography. The complex contains three distorted trigonal planar and one distorted tetrahedral Cu 1 centers with CuS bond lengths short for their respective coordination geometries. In DMSO solution, 1 H NMR spectra of 3 reflect free ligand symmetry suggesting dissociation into dimers. Cyclic voltammetry of 3 in MeCN reveals one irreversible oxidation at 110 mV ( vs SCE).