Synthesis, Spectroscopic and X-Ray Structural Studies of Silver(I) Complexes of α-Keto Stabilized Phosphorus Ylides

Abstract

Reactions between AgX (X =OTf, NO<inf>3</inf>) and ylides of the type Ph<inf>3</inf>P=CHC(O)C<inf>6</inf>H<inf>4</inf>-4-R (R=F, Br, OMe) in molar ratio 1:2 lead to complexes [Ag{CH(PPh<inf>3</inf>)C(O)C<inf>6</inf>H<inf>4</inf>-4-R}]X (1-4); X-ray structure determinations have been carried out on 4. The IR and NMR data of the products formed by reaction of Ag(I) with the ylides are consistent with C-bounded ylides. Analytical data indicate 1: 2 stoichiometry between the ylide and Ag(I) in the products. The molar conductivities of these complexes are within the range for 1:1 electrolytes. Crystallographic data for 4 are: crystal system, triclinic; space group, Pī, a=12.1151(4), b=13.8989(5), c=15.4855(5)Å, β=102.676(3)°, V=2477.82(15) Å3, Z=2. © 2009 Taylor & Francis.