200349-29-7Relevant academic research and scientific papers
2-(Phenyltelluromethyl)tetrahydrofuran (L1) and 2-(2-{4-methoxyphenyl}telluroethyl)-1,3-dioxolane (L2) and their palladium(II) and platinum (II) complexes
Batheja, Raman,Singh, Ajai K.
, p. 4337 - 4345 (1997)
The nucleophile [ArTe-] generated in situ borohydride solution of Ar2Te2, reacts with 2-(chloromethyl)tetrahydrofuran and 2-(2-bromoethyl)-1,3-dioxolane resulting in L1 and L2, respectively. The complexes of palladium(II) and platinum(II) with L1/L2 having stoichiometries [MCl2·L2], [ML2](ClO4)2, [(DPPE)ML2](ClO4)2, [(PPh3)2ML2](ClO4)2 and [(phen)ML2](ClO4)2 (where L=L1/L2 DPPE=Ph2PCH-2CH2PPh2, phen=1,10-phenanthroline and M=Pd/Pt) have been synthesized. IR, 1H, 125Te{1H} and 31P{1H} NMR and UV-vis spectral data of these species in conjunction with their molar conductance and molecular weight data have been used to authenticate the new species. In all complexes (1-20) the ligands L1 and L2 are coordinated through tellurium and in the complexes of formula [ML2](ClO4)2 (M=Pd, Pt) the ligand is bidentate with the oxygen atom used in complexation. In solution, complexes PtCl2L2 exist as a mixture of cis and trans isomers whereas only the trans isomer was observed for the palladium analogues. The [(phen)PdL2](ClO4)2(Q) quenches 1O2 readily. The plot of log [Q] vs time is linear. Mechanism compatible with the experimental observations is proposed.
