Investigations on the reactivity of arylantimony halides with N,O-donor ligands

The reactions of organoantimony(V) halides with N,O-donor ligands in presence of a base were investigated. The synthesis and crystal structure of three novel organoantimony(V) compounds ( Ph 2 Sb ) 2 ( Q ) 2 ( O ) 2 1 , ( Ph 3 Sb )(PM)Cl 2 and ( Ph 2 Sb )(TEA) 3 [where Q = 8-hydroxyquinoline , PM = 2-pyridinemethanol and TEA = triethanolamine ] are reported herein. 1 crystallizes as a dimer resulting in the formation of a four-membered Sb 2 O 2 ring while 2 and 3 are monomeric in the solid state. Interestingly, compound 3 crystallizes in orthorhombic chiral space group P 2 1 2 1 2 1 and is a rare example of spontaneous chirality exhibited in organoantimony(V) compounds. Graphical Abstract SYNOPSIS Herein we report the synthesis and structural characterization of three organoantimony(V) complexes supported by O,N donor ligands.