Synthetic and thermochemical studies of fluorinated tertiary phosphine ligands R2PRf [R = Cy, Ph, Pr-i; R-f = CH2CH2(CF2)(5)CF3] in an organoiron system

摘要

The fluorinated phosphine ligands [PR2Rf (R = Cy (2); Pr-i, (3); Ph, (4); R-f = CH2CH2(CF2)(5)CF3] react with Fe(CO)(3)(BDA) (1) (BDA = (C6H5)CH = CHC(O)CH3, benzylideneacetone) to yield the corresponding Fe(CO)(3)(PR2Rf)(2) = (R = Cy, (5) Pr-i, (6) Ph, (7)) complexes. Infrared studies on the carbonyl complexes and solution calorimetry studies of the reaction of 1 with 2, 3 and 4 have been performed to quantify the donor strength of this series of ligands. (C) 2000 Elsevier Science S.A. All rights reserved. [References: 37]