2-Aryltelluroethanols and their mercury(II), palladium(II) and platinum(II) alkoxides chelated through tellurium—synthesis and spectra
作者:Ajai K. Singh、S. Thomas
DOI:10.1016/s0277-5387(00)86033-7
日期:1991.1
The sodium salt of 2-aryltelluroethanol (1) (aryl = 4-MeOC6H4 or 4-EtOC6H4), which was synthesized by the reaction of HOCH2CH2Cl with ArTe-Na+ (generated in situ by borohydride reduction of the appropriate Ar2Te2), reacts with HgCl2, PdCl2 and K2PtCl4 in 1:1 molar ratio resulting in alkoxides of stoichiometry [MC1(1-H)2]2. The chelation through tellurium has been supported by proton NMR spectra and in the case of mercury(II) complexes, by C-13 NMR spectra also. The presence of nu[M-Cl(bridging)] in the range 200-270 cm-1 supports the dimeric formulation for these alkoxides based on chlorine bridges. The ArTe group does not significantly affect the hydrogen bonding pattern of the ethanol. The CH2 rocking vibrations suggest that 1 exists in the complexes in the gauche conformation.