A mixed alkyl-aryl precursor dimethyl(2-(N,N-dimethylaminomethylphenyl)bismuth BiMe2(PhCH2NMe2) has been developed by TOSOH corporation. It combines many advantages: it is liquid at RT and unexplosive unlike BiMe3, it has high vapor pressure and volatility (higher than BiPh3, due to lower molecular mass, see Fig.) and adequate dec. temp.