The synthesis and structural characterisation of the mercury (II) halide complexes of the phosphorus ylide carbethoxymethylenetriphenylphosphorane

Four-coordinate and pseudo five-coordinate Hg(II) complexes of a new bidentate phosphorus ylide: X-ray crystal structure and spectral characterization

“…The Hg atom is surrounded by one P atom of the PPh 2 unit, one ylidic C atom and two I atoms. The angles subtended by the ligand at the Hg(II) center in 5 vary from 89.65 (17) [20,32,36,41].…”

“…Hg(II) forms C-coordinated complexes with X-C 6 H 4 C(O)C(H)@ PAr 3 (X = Cl and NO 2 ; Ar = phenyl and p-tolyl) [18,19] and Ph 3 P@C(H)CO(OEt) [20]. On the other hand, regiospecific O-coordination of the acetyl oxygen has been observed for the reaction of Hg(II) halides with Ph 3 P@C(COPh)(COMe) [21].…”

Reactivity of mercury(II) halides with the unsymmetrical phosphorus ylide Ph2PCH2CH2PPh2C(H)C(O)Ph: Crystal structure of {HgI2[PPh2CH2CH2PPh2C(H)C(O)Ph]}n

“…We have been interested in investigating the different bonding modes adopted by ylides when ligated to Hg(II) and U(VI) [14]. Hg(II) forms C-coordinated complexes with Ph 3 P@ C(H)C(O)Ph [15,16] and Ph 3 P@C(H)CO(OEt) [17]. On the other hand, regiospecific O-coordination of the acetyl oxygen has been observed for the reaction of Hg(II) halides with Ph 3 P@C(COPh)(COMe).…”

X-ray and Spectroscopy Studies of Mercury (II) and Silver (I) Complexes of α-Ketostabilized Phosphorus Ylides

“…The α-keto-stabilized phosphorus ylides was shown interesting properties such as their high stability and their ambidentate character as ligands (C-versus O-coordination). [24][25][26][27][28][29][30] This ambidentate character can be rationalized in terms of the resonance forms A-C (Scheme 1).…”

“…[24][25][26][27] The C and Ocoordinated complexes of Hg (II) was formed. [28][29][30] In this paper, we report the reactivity of the ligands 4-Bromo K. Karami, O. Büyükgüngör, and H. Dalvand benzoyl methylene triphenyl phosphorane (Y 1 ) and 4-Phenyl benzoyl methylene triphenyl phosphorane (Y 2 ), towards mercury (II) halides and silver (I) salts. One of the significance aspects of our work is to ascertain the preferred coordination modes of Y 1 and Y 2 to the Hg and Ag metals.…”