Organolead compounds transition metal complexes

Organolead compounds containing a lead-transition metal bond are also known. When a lead(II) or lead(IV) compound reacts with Co2(CO)gL2 complexes (L = tert -phosphine, -arsine or a phosphite), the blue, air-stable Pb[Co(CO)3L]4 derivatives are obtained371. 

Divalent organotin and organolead compounds can be divided into two classes, viz, those in which the organic groups are organic groups are 7r-bonded to the metal. We will deal with these two classes separately beginning with the 7r-bonded species. A third section will cover transition metal stannylene and plumbylene complexes from both classes. 

---