Synthesis, spectroscopic analysis and crystal structure of (N-{2-[(2-aminoethyl)amino]ethyl}-4′-methyl-[1,1′-biphenyl]-4-sulfonamidato)tricarbonylrhenium(I)

Abstract

The title compound, [Re(C17H22N3O2S)(CO)3] is a net neutral fac-Re(I)(CO)3 complex of the 4-methylbiphenyl sulfonamide derivatized diethylenetriamine ligand. The NNN-donor monoanionic ligand coordinates with the Re core in tridentate fashion, establishing an inner coordination sphere resulting in a net neutral complex. The complex possesses pseudo-octahedral geometry where one face of the octahedron is occupied by three carbonyl ligands and the other faces are occupied by one sp2 nitrogen atom of the sulfonamide group and two sp3 nitrogen atoms of the dien backbone. The Re—Nsp2 bond distance, 2.173 (4) Å, is shorter than the Re—Nsp3 bond distances, 2.217 (5) and 2.228 (6) Å, and is similar to the range reported for typical Re—Nsp2 bond lengths (2.14 to 2.18 Å).

Keywords

• rhenium complexes
• diethylenetriamine
• biphenyl
• sulfonamide
• crystal structure