Dn. Kravtsov et al., F-19 NMR-STUDY OF COMPARATIVE POLARITY OF METAL-OXYGEN AND METAL-SULFUR BONDS FORMED BY TRANS-2-CH3C6H4M(PET3)(2) (M=NI, PD, PT) GROUPS, Russian chemical bulletin, 46(3), 1997, pp. 572-576
A series of organometallic 4-fluorophenoxides, 4-fluorobenzoates, and
4-fluorothiophenoxides containing trans-2-CH3C6H4M(PEt3)(2) (M = Ni, P
d, Pt) groups was synthesized. Based on the F-19 NMR study, the data o
n the comparative polarity of the M-O and M-S bonds and comparative el
ectronegativity of the indicated groups were obtained. The results ind
icate that the group electronegativities do not change in parallel to
the electronegativities of the central metal atoms, and their sequence
may vary as the nature of the heteroatom bonded to these groups chang
es.