190135-48-9Relevant academic research and scientific papers
Structural and Electronic Impact of Fluorine in the Ortho Positions of the Phenoxy Groups of Phenyl-phosphonite and -phosphinite Ligands in Compounds of Platinum-group Metals
Atherton, Malcolm J.,Fawcett, John,Hill, Adrian P.,Holloway, John H.,Hope, Eric G.,et al.
, p. 1137 - 1148 (2007/10/03)
The phosphonites PPh(OPh)2 I and PPh(OC6H3F2-2,6)2 II, and the phosphinites PPh2(OPh) III and PPh2(OC6H3F2-2,6) IV reacted with 5-C5Me5))> to yield the complexes 5-C5Me5)> .The perpronito-phosphonite and -phosphinite, I and III, reacted with to yield exclusively the cis isomers of 5 and 7.The fluorine-containing phosphonite and phosphinite, II and IV, reacted with to give the trans isomers of 6a and 8a, which isomerize slowly in acetone solution to yield the cis isomers 6b and 8b.Values of 1J(RhP) and 1J(PtP) strongly suggest that the presence of fluorine atoms in the ortho positions of the phenoxy groups has a negligible effect on the electronic properties of the phosphorus atoms of the ligands.X-Ray single-crystal structural studies on 1, 4, 6a, 7, 8a and 8b revealed that the fluorine atoms do, however, exert a profund steric influence.
