99604-04-3Relevant academic research and scientific papers
Complexes of hybrid ligands. Pd2+ and Pt2+ complexes of new fluoro-alcohol thioether ligands; the use of thioether inversions to make structural assignments
Boere, Rene T.,Willis, Christopher J.
, p. 3530 - 3536 (2007/10/02)
The fluorinated alcohol-thioethers RSCH2C(CF3)2OH (R = Me, Ph) have been synthesized by the reaction of RSCH2Li with (CF3)2CO.By ionization of the fluoroalcohol group, these may act as bidentate, uninegative, ligands L-.The presence of the soft thioether function in the hybrid ligand stabilizes the bond to the harder fluoro-alkoxy group, and complexes with soft transition metals are formed.Neutral complexes PdL2 and PtL2 have been synthesized, and, by the use of nmr, the geometry of the complexes is assigned as cis for Pt complexes, while both cis and trans are observed for Pd.The barrier to inversion at coordinated thioether is studied by dynamic nmr, and observation of coalescence temperatures leads to values of ΔG(excit.) of 73-74 kJ/mol for cis-PdL2, 67-69 kJ/mol for trans-PdL2, and 89 +/- 1 kJ/mol for cis-PtL2.
