title: Novel palladium complexes employing mixed phosphine phosphonates and phosphine phosphinates as anionic chelating [P,O] ligands.
abstract: A route to various substituted phosphine phosphonic acid compounds of the general form Ar(2)PC(6)H(4)PO(OH)(2) (Ar = Ph, o-MeC(6)H(4), o-MeOC(6)H(4)) has been investigated. These compounds were employed as bidentate anionic [P,O] ligands in neutral palladium complexes. The [P,O] chelating coordination was determined by X-ray crystallography of a representative palladium complex. Furthermore, the bifunctional ligand Ph(2)PC(6)H(4)PO(OH)Ph represents the first example of a chelating anionic [P,O] ligand resulting from the combination of a phosphine and a phosphinate moiety.
authors.affiliation: Department of Materials Science and Catalyst Design, University of Ulm, Albert Einstein Allee 11, D-89069, Ulm, Germany.
authors.forename: Corinna M
authors.initials: CM
authors.lastname: Reisinger
authors.forename: Rüdiger J
authors.initials: RJ
authors.lastname: Nowack
authors.forename: Dirk
authors.initials: D
authors.lastname: Volkmer
authors.forename: Bernhard
authors.initials: B
authors.lastname: Rieger