- The vibrational spectra of chloromethyl mercuric chloride, ClCH2HgCl
-
The Raman and IR spectra of ClCH2HgCl are reported for the firts time and a complete vibrational assignment is made on the basis of Cs symmetry.Force constant calculations based on an SVFF approximation indicate that the mercury-carbon stretching force constant is decreased by 30 percent on introduction of a chlorine atom into the methyl group of CH3HgCl.
- Edwards, H. G. M.
-
-
Read Online
- Preparation of (Chloromethyl)palladium(II) Derivatives from Complexes of Palladium Dichloride by Reaction with Diazomethane or Bis(chloromethyl)-mercury
-
Treatment, with diazomethane, of a range of palladium dichloride and dibromide complexes containing chelaing ligands has been examined.With all but one, the formation of a mono(halogenomethyl) product was observed.The methylene insertion products from complexes of palladium dichloride are relatively stable if at least one olefin or phosphine ligand is present, but with bis-amine or -sulphide ligands the insertion products could not be isolated.However, all of the insertion products showed at least some tendency to revert to the starting dichloro complexes by loss of the methylene moiety.Products of insertion into a Pd-Br bond are less readily formed than those of the corresponding chloride and the resulting bromomethyl derivatives are less stable than their chloromethyl analogues.Chloromethyl derivatives were also prepared from the dichloride by treatment with bis(chloromethyl)mercury (only one of the two chloromethyl groups is transfered) or from a performed chloromethyl complex by ligand exchange.
- McCrindle, Robert,Arsenault, Gilles J.,Farwaha, Rajeev,McAlees, Alan J.,Sneddon, David W.
-
p. 761 - 766
(2007/10/02)
-
- DIRECT TRANSFER OF ALIPHATIC AND AROMATIC SUBSTITUENTS FROM ORGANOSILATRANES TO MERCURY(II) SPECIES
-
The relative reaction rates of several silatranes (derivatives of 2,8,9-trioxa-5-aza-1-silatricyclo1,5>undecane) and HgCl2 in acetone-d6 to yield the corresponding organomercury compound are of the order of e.g., 5 * 10-1 1 mol-1 sec-1 or slightly less, a rate that is unexpectedly high compared to the essentially inert parent organotrialkoxysilanes.Thus, the apical Si-C bond of the silatrane is extraordinarily susceptible to direct electrophilic attack by mercury(II).The rates decrease in the order CH2=CH, C6H5, p-ClC6H4 > CH3 > CH3CH2, CH3CH2CH2 > C6H11, ClCH2, Cl2CH, CH3CH2O.The effects of varying the solvent and the counterions are noted, and the probable mechanism is discussed.
- Nies, J. Dirk,Bellama, Jon M.,Ben-Zvi, Nava
-
p. 315 - 320
(2007/10/02)
-