Bis(silylaminodiarylphosphoranylsilylmethyl-C,N)-tin(II) and -lead(II) complexes and their precursors; structures of H(LL′), H(LL″), Sn(LL″)2 and Pb(LL″)2; [LL′]− = [CH(SiMe3)P(Ph)2NSiMe3]−,

A number of new derivatives of the 1-aza-2-phospha(V)allyl ligands [LL′]− and [LL″]− were obtained, including their conjugate acids H(LL′) (III) and H(LL″) (IV) and their complexes [Li(LL′)]2 (1a), [Li(LL″)]2 (2), Pb(LL′)2 (3a), Pb(LL″)2 (4), SnCl(LL′) (5) and Sn(LL″)2 (6); the X-ray structures of III, IV, 4, and 6 are presented; those of 1a, 2 and 3a were published earlier.