Synthesis and Multinuclear NMR Study of Benzoyl Methylene Triparatolylphosphorane Ylide and the Reaction of this Ylide with Mercury(II) Halides

Synthesis, Characterisation and Theoretical and Antibacterial Studies of Hg(II), Cd(II) and Ag(I) Complexes with a New Monodentate Phosphorus Ylide

Reaction of a new phosphorus ylide ( p-tolyl)3P=CHC(O)C6H4( m-OCH3) (Y) with mercury(II) halides in equimolar ratios using methanol as solvent yielded binuclear complexes of the type [Y. HgX2]2 (X = Cl, Br, I). The ylide reacts with Hg(NO3)2.H2O and Cd(NO3)2.4H2O in the same solvent with equimolar ratios to give polynuclear complexes [M(Y)(NO3)(μ-NO3)]n (M = Hg, Cd) and with AgNO3 and AgOTf in 1:2 molar ratio to give mononuclear complexes [AgY2]Z [Z = NO3 or OTf]. A theoretical study of structure and bonding in [Y. HgX2]2 (X = Cl, Br, I) at the BP86/def2-SVP level of theory is reported and the synthesised compounds were screened for their antibacterial activity against six Gram negative and Gram positive bacteria.