TETRADENTATE-N2O2 LIGAND COMPLEXES OF TIN(II) - X-RAY CRYSTAL-STRUCTURE OF [N,N'-(1,2-ETHYLENE)BIS(SALICYLALDAMINE)]TIN(II), (SALEANH(2)SN)

The tetradentate -N2O2 ligands, [N,N'-(1,2-ethylene)bis(salicylaldamine)] (SaleanH(4)) (1), [N,N'-(1,3-propylene)bis(salicylaldamine)] (SalpanH(4)) (2) and [N,N'-(1,2-phenylene)bis(salicylaldamine)] (SalophanH(4)) (3), were used to prepare Sn(II) complexes that are monomeric (SaleanH(2)Sn (7), SalpanH(2)Sn (8)) and dimeric ([SalophanH(2)Sn](2)) (9)) The structure of 7 was determined by single-crystal X-ray crystallography: orthorhombic, space group pbcn with a = 19.849(4), b = 10.791(3), c = 18.559(5) Angstrom and Z = 8. Compounds 8 and 9 undergo transmetallation reactions with three equivalents of AlME(3) to produce the trimetallic derivatives, SalpanAlMe(AlMe(2))(2) (10) and SalophanAlME(AlME(2))(2) (11).