uc lear ▁lead ▁comp ound ▁with ▁a ▁chain ▁structure ▁upon ▁work - up , ▁highlight ing ▁the ▁interesting ▁react ivity ▁of ▁pl um by len es . 2 8 ▁ ▁In ▁addition , ▁pl um by len es ▁can ▁also ▁under go ▁met ath esis ▁with ▁group ▁ 1 3 ▁E ( CH 3 ) 3 ▁( E ▁= ▁Al , ▁Ga ) ▁comp ounds . ▁ ▁Pl um by len es ▁bearing ▁different ▁subst itu ents ▁can ▁also ▁under go ▁trans met all ation ▁and ▁exchange ▁subst itu ents , ▁with ▁the ▁driving ▁force ▁being ▁the ▁relief ▁of ▁ster ic ▁stra in ▁and ▁the ▁low ▁P b - C ▁bond ▁dis soci ation ▁energy . ▁ ▁App lications ▁▁ ▁Pl um by len es ▁can ▁be ▁used ▁as ▁concurrent ▁ σ - don or - σ - ac ceptor ▁lig ands ▁to ▁metal ▁complex es , ▁function ing ▁as ▁ σ - don or ▁via ▁its ▁filled ▁ 6 s ▁orb ital ▁and ▁ σ - ac ceptor ▁via ▁its ▁empty ▁ 6 p ▁orb ital . ▁ ▁Room ▁temperature - stable ▁pl um by len es ▁have ▁also ▁been ▁suggested ▁as ▁prec urs ors ▁in ▁chemical ▁v ap our ▁de position ▁( C VD ) ▁and ▁atomic ▁layer ▁de position ▁( AL D ) ▁of ▁lead - cont aining ▁materials . ▁D ith iop l um by len es ▁and ▁d ial k ox y pl um by len es ▁may ▁be ▁useful ▁as ▁prec urs ors ▁for ▁prepar ing ▁the