Synthesis and Reaction Chemistry of Sb( E CH 2 CH 2 NMe 2 ) 3 ( E = O, S)

The antimony aminoalkoxide and aminothiolates Sb( E CH 2 CH 2 NMe 2 ) 3 [ E = O ( 1 ), S ( 2 )] were synthesized and their ability to form adducts with other metal moieties investigated. Compound 1 forms 1:1 adducts with NiI 2 ( 3 ) and M (acac) 2 [ M = Cd ( 4 ), Ni ( 5 )], while 2 undergoes ligand exchange with AlMe 3 to afford Me 2 AlSCH 2 CH 2 NMe 2 ( 6 ). The structures of 2 – 4 and 6 were determined. Compound 2 incorporates three S, N ‐chelating ligands though the interaction with nitrogen is weaker than in analogous alkoxide complexes. Product 3 reveals one iodine has migrated from nickel to antimony, and all three alkoxide ligands bridge the two metals through μ 2 ‐O atoms. In contrast, in 4 , only one alkoxide links the antimony and cadmium. Compound 6 adopts the same structure, a chelating S , N ligand generating a tetrahedral center at aluminum, as known t Bu 2 AlSCH 2 CH 2 N R 2 species ( R = Me, Et).