The novel example of organotin(IV) metallacrowns: Syntheses, characterizations and crystal structures of [12-MC[RSn(IV)]N(shi)-4] complexes (R = Et, Bu, Ph; Shi = salicylhydroxamic acid)

Three 12-MC-4 organotin(IV) complexes [12-MC[RSn(IV)]N(shi)-4] (R = Et(1), Bu(2), Ph(3); Shi = salicylhydroxamic acid), which are the novel example of organotin(IV) metallacrowns, have been synthesized and characterized by elemental analyses, IR, TGA and X-ray diffraction.