New mononuclear mercury(II) complexes of a bifunctionalized ylide containing five-membered chelate ring: Spectral and structural characterization

Synthesis, Spectroscopic and Antibacterial Studies of Silver(I) Complexes with Bidentate Phosphorus Ylides

P-coordinated complexes of the type [AgNO3{Ph2P(CH2)nPPh2C(H)C(O)C6H4R}]2 ( n = 1 or 2; R=Cl, Br, NO2 or OCH3), have been synthesised by reactions of AgNO3 with the appropriate phosphorus ylides. The antibacterial effects of DMSO-solutions of all compounds have been evaluated by the agar disc diffusion method against six Gram positive and Gram negative bacteria.

Synthesis and Characterisation of Hg(II) Complexes Including Bidentate Phosphorus Ylides

The reaction of asymmetrical phosphorus ylides [Ph2PCH2PPh2=C(H)C(O)C6H4R] (R=Br, OCH3) with mercury(II) halides yielded the P, C-chelated complexes. Characterisation of these products was carried out by elemental analysis, IR, 1H, 31P, and 13C NMR. Computational studies at DFT (BP86) level of theory are also reported. The electrochemical behaviour of complexes was also investigated by cyclic voltammetry. The synthesised compounds were screened for their antibacterial activities against six Gram negative and positive bacteria.