A Novel Organolead(II) Species the Plumbacycloalkane Derivative [CH2SiMe2C(SiMe3)2PbC(SiMe3)2SiMe2Ch2]

The title lead(II) derivative was obtained as dark blue crystals by treatment of PbCl2 with (TMEDA = N,N,N‘,N‘-tetramethylethylenediamine) in tetrahydrofuran and its structure determined by X-ray diffraction. The compound is in effect the first dialkylead(II) species to be structurally characterized. The C-Pb-C angle is 117.1(2)°. Analogous treatment of SnCl2 yielded a yellow solid, which was judged from spectroscopic data to be the TMEDA complex of the analogous stannacycloalkane.