Synthesis, characterization and X-ray crystal structure of Tp*wII{(R)- (+)-NHCH(Me)Ph}(CO)2

Reaction of Tp*(WI)-I-II(CO)(2 )[Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate] with (R)-( + )-alpha-methylbenzylamine [(R)-(+ )-LH2] in dichloromethane yields blue, diamagnetic Tp*W-II(R)-(+ )-LHI(CO)(2), which has been characterised by microanalysis, mass spectrometry, infrared, (HNMR)-H-1, C-13{H-1} NMR and electronic spectroscopies, and X-ray crystallography. The six-coordinate, distorted-octahedral (skew-trapezoidal-bipyramidal) complex is composed of a W(II) center bound to mutually cis carbonyl [C-W-C = 71.1(3)degrees] and (R)-(+ )-LH ligands and a facially tridentate Tp* ligand. The complex is unusually stable and resistant to oxygen- and sulfuratom transfer reactions directed at the W center.

Automated summary

The reaction of Tp*(WI)-I-II(CO)(2) with (R)-( + )-alpha-methylbenzylamine in dichloromethane produces blue, diamagnetic Tp*W-II(R)-(+)-LHI(CO)(2). This complex features a six-coordinate, distorted-octahedral structure and is unusually stable and resistant to oxygen- and sulfuratom transfer reactions.