| Summary: | A straightforward method for the preparation of trisphosphinite ligands in one step, using only commercially available reagents (1,1,1-tris(4-hydroxyphenyl)ethane and chlorophosphines) is described. We have made use of this approach to prepare a small family of four trisphosphinite ligands of formula [CH<sub>3</sub>C{(C<sub>6</sub>H<sub>4</sub>OR<sub>2</sub>)<sub>3</sub>], where R stands for Ph (<b>1a</b>), Xyl (<b>1b</b>, Xyl = 2,6-Me<sub>2</sub>-C<sub>6</sub>H<sub>3</sub>), <i><sup>i</sup></i>Pr (<b>1c</b>), and Cy (<b>1d</b>). These polyfunctional phosphinites allowed us to investigate their coordination chemistry towards a range of late transition metal precursors. As such, we report here the isolation and full characterization of a number of Au(I), Ag(I), Cu(I), Ir(III), Rh(III) and Ru(II) homotrimetallic complexes, including the structural characterization by X-ray diffraction studies of six of these compounds. We have observed that the flexibility of these trisphosphinites enables a variety of conformations for the different trimetallic species.
|
|---|
