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

The title complex possesses pseudo-octa­hedral geometry where one face of the octa­hedron is occupied by three carbonyl ligands and the other face is occupied by one sp² nitro­gen atom of the sulfonamide group and two sp³ nitro­gen atoms of the dien backbone.

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).