F-19 NMR-STUDY OF CIS-EFFECTS AND TRANS-EFFECTS OF SUBSTITUTED TRIPHENYLPHOSPHINE LIGANDS IN ARYLPHOSPHINE-TRI(4-FLUOROPHENYL)PHOSPHINEPLATINUM 4-FLUOROTHIOPHENOXIDES

Citation
Dn. Kravtsov et al., F-19 NMR-STUDY OF CIS-EFFECTS AND TRANS-EFFECTS OF SUBSTITUTED TRIPHENYLPHOSPHINE LIGANDS IN ARYLPHOSPHINE-TRI(4-FLUOROPHENYL)PHOSPHINEPLATINUM 4-FLUOROTHIOPHENOXIDES, Russian chemical bulletin, 44(7), 1995, pp. 1311-1315
Citations number
15
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
44
Issue
7
Year of publication
1995
Pages
1311 - 1315
Database
ISI
SICI code
1066-5285(1995)44:7<1311:FNOCAT>2.0.ZU;2-3
Abstract
A number of compounds of the type of trans-4-FC6H4Pt(PAr3)(2)SC6H4F-4, where Ar is a substituted phenyl group, have been prepared starting f rom the corresponding chlorides. By exchange reactions of trans-4-FC6H 4Pt[P(C6H4F-4)(3)]2SC6H4F-4 with the above-mentioned compounds or Ar3P , trans-4-FC6H4Pt[P(C6H4F-4)(3)][PAr3]SC6H4F-4 have been generated in solution. For the latter compounds, the effect of Ar3P on cis- and tra ns-ligands has been studied by the F-19 NMR technique. It has been sho wn that the cis- and trans-effects of Ar3P run parallel and are well d escribed by pK(a) values and ionization potentials of the unshared ele ctron pair in Ar3P, as well as by sigma(0) constants of the aryl group s.