Reaction of N-trimethylsilyl derivatives of amides and lactams with chloro(chloromethyl)dimethylstannane: Crystal and molecular structure of 1-(chlorodimethylstannylmethyl)-2-piperidone

General scheme of reactions between chloro(chloromethyl)dimethylstannane and N-trimethylsilylamides and -lactams was established by NMR and IR techniques. X-ray diffraction study of the (O-Sn)-chelate 1-(chlorodimethylstannylmethyl)-2-piperidone is reported. Structural parameters obtained from the X-ray study and quantum-chemical calculations are discussed in comparison with those of related TBP derivatives of Si, Ge, and Sn.