title: Synthesis and characterization of fluorophenylpalladium pincer complexes: electronic properties of some pincer ligands evaluated by multinuclear NMR spectroscopy and electrochemical studies.
abstract: Palladium fluorophenyl complexes with different pincer ligands Pd(Ar)[2,6-(tBu(2)PCH(2))(2)C(6)H(3)] (13), Pd(Ar)[2,6-(tBu(2)PO)(2)C(6)H(3)] (14), Pd(Ar)[{2,5-(tBu(2)PCH(2))(2)C(5)H(2)}Fe(C(5)H(5))] (15), and Pd(Ar)[{2,5-(tBu(2)PCH(2))(2)C(5)H(2)}Ru(C(5)H(5))] (16) were synthesized by the reaction of LiAr (Ar = C(6)H(4)F-4) with the respective trifluoroacetate palladium pincer complexes 9-12. The molecular structures of 14 and 16 were determined by an X-ray crystallographic method. Complexes 13-16 and {Pd(Ar)[{2,5-(tBu(2)PCH(2))(2)C(5)H(2)}Fe(C(5)H(5))]}PF(6) (17) were studied by multinuclear NMR spectroscopy and cyclic voltammetry. On the basis of (19)F NMR chemical shifts and (1)J((13)C-(19)F) coupling constants, as well as Pd(II)/Pd(IV) oxidation potentials, electronic characteristics of the corresponding pincer ligands were elucidated.
authors.affiliation: A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991, Moscow, Russian Federation.
authors.forename: Alexey V
authors.initials: AV
authors.lastname: Polukeev
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Kuklin
authors.forename: Pavel V
authors.initials: PV
authors.lastname: Petrovskii
authors.forename: Svetlana M
authors.initials: SM
authors.lastname: Peregudova
authors.forename: Alexander F
authors.initials: AF
authors.lastname: Smol'yakov
authors.forename: Fedor M
authors.initials: FM
authors.lastname: Dolgushin
authors.forename: Avthandil A
authors.initials: AA
authors.lastname: Koridze