triphenylarsane in benzene-d6 byproducts: (C6H5)3AsNCOCCl3; under Ar; a mixt. of the bismuthane, triphenylarsane and C6D6 was heatedat 60°C for 7 h;

in benzene-d6 under Ar; a mixt. of the bismuthane, tris(2-methylphenyl)stibane and C6D6 was heated at 60°C for 7 h;