437611-29-5Relevant academic research and scientific papers
Cyclometalated products of [(COE)2RhCl]2 and 1,3-(RSCH2)2C6H4 (R = tBu, iPr) are dimeric. Synthesis, molecular structures, and solution dynamics of [μ-ClRh(H)(RSCH2)2C6H3 -2,6]2
Evans, Daniel R.,Huang, Mingsheng,Seganish, W. Michael,Chege, Esther W.,Lam, Yiu-Fai,Fettinger, James C.,Williams, Tracie L.
, p. 2633 - 2641 (2002)
Two tridentate thioether pincer ligands, 1,3-(RSCH2)2C6H4 (R = tBu, 1a; R = iPr, 1b) underwent cyclometalation using [(COE)2RhCl]2 in air/moisture-free benzene at room temperature. The resultant complexes, [μ-CIRh(H)-(RSCH2)2C6H3 -2,6]2 (R = tBu, 2a; R = iPr, 2b) are dimeric both in the solid state and in solution. A battery of variable-temperature one- and two-dimensional 1H NMR experiments showed conclusively that both complexes undergo dynamic exchange in solution. Exchange between two dimeric diastereomers of 2a in solution occurred via rotation about the Rh-Cipso bond. The dynamic exchange of 2b was significantly more complex as an additional exchange mechanism, sulfur inversion, occurred, which resulted in the exchange between several diastereomers in solution.
