| dc.description |
Organotin(IV) chelates with a quadridentate Schiff base of the type R2Sn(salen)(R = Me or Ph) have been synthesised by use of the recently reported Tl2(salen) complex. The n.m.r. spectra of the chelates suggest that the R groups are cis to each other with the salen ligand in the unusual twisted configuration. A number of tin(IV) Schiff-base complexes of the types SnCl4,2(salH-N-p-MeC6H4); SnCl4,(salenH2); Sn(salen)Cl2 and SnCl3-(salH-N-(2-OC6H4), Et3N are also described. I.r., <sup>1</sup>H n.m.r., and mass spectra and conductance measurements have been used where possible to suggest possible structures for the complexes. |
