From alkyl halides and bismuth metal

From alkyl halides and bismuth metal (method F) 

Activated bismuth metal reacts with alkyl halides or trifluoromethyl iodide in the presence or absence of metallic copper at high temperatures to afford a mixture of mono- and dihalobismuthines [61JINC213, 63AJC636, 97JA724]. 

A mixture of pulverized bismuth (40 g) and copper powder (8 g) was heated at 350°C under an atmosphere of hydrogen for 3 h. Methyl bromide was then introduced at a rate of 5 ml/min at 250°C. A yellow crystalline solid was formed beyond the heating zone. Over an interval of 16 h, yellow crystals (2 g) were collected [61JINC(16)213]. 

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