in ethanol refluxed under Ar for 45 min; filtered, evapd., dissolved in C6H6, filtered, evapd., washed with hexane, dried (vac.); elem. anal.;

in benzene to benzene soln. of Pd complex under N2 added benzene suspn. of di-p-tolylmercury over 10 min, stirred for 1.5 h; filtered, added petroleum ether, filtered, filtrate treated with charcoal, filtered, concd., added petroleum ether, elem. anal.;

in benzene diphenylmercury and Pd complex mixed under N2, benzene added, stirred for 1 h, soln. evapd. to dryness, heated in vac. (85°C, 0.005 torr) for 13 h; solid treated with benzene and charcoal, soln. filtered, concd., petroleum ether added, elem. anal.;

in benzene to benzene soln. of Pd complex under N2 added benzene suspn. of dibenzylmercury over 10 min, stirred for 1.5 h; filtered, added petroleum ether, filtered, filtrate treated with charcoal, filtered, concd., added petroleum ether, elem. anal.;