Wu Yangjie

Transmetallation reaction of Schiff-base-type arylmercury compounds with metallic tin

Abstract The transmetallation reaction of 14 Schiff-base-type arylmercury compounds with metallic tin has been carried out in refluxing xylene. It was found tha

Transmetallation reaction of Schiff-base-type arylmercury compounds with 4-ethoxyphenyltellurium(IV) trichloride and the crystal structure of (4-ethoxyphenyl)[(2-benzylideneamino-5-methyl)phenyl]tellurium(IV) dichloride

A series of new asymmetric diaryltellurium dichlorides were synthesized by the transmetallation reaction of Schiff-base-type arylmercury compounds with 4-ethoxyphenyltellurium trichloride. All the asymmetric diaryltellurium dichlorides prepared were characterized by elemental analysis, IR, 1H nuclear magnetic resonance and mass spectroscopy. The crystal structure of (4-ethoxyphenyl) [(2-benzylideneamino-5-methyl)phenyl]tellurium dichloride shows that the coordination on tellurium can be considered as essentially pseudo-octahedral, with lone pair electrons occupying the forth equatorial site. The Teue5f8N distance of 2.905(2) A is shorter than the sum of the van der Waals radii of Te and N (about 3.7 A), indicating the substantial secondary intramolecular coordination between Te and N. The N → Te intramolecular coordination holds the Schiff base moiety in near-planar geometry.