Pentaalkylantimony compounds

Synthesis and x‐ray crystal structures of hypervalent hexacoordinate antimony compounds without halogen ligands

“…Hexacoordinate organoantimony-ate complexes [1] have been proposed as intermediates in the reactions of 10-Sb-5 compounds with nucleophiles [2][3][4][5][6]. X-ray structures of some stable organoantimony 12-Sb-6 -ate complexes have been reported but they are limited to compounds having halogen substituents [7,8].…”

“…X-ray structures of some stable organoantimony 12-Sb-6 -ate complexes have been reported but they are limited to compounds having halogen substituents [7,8]. To our knowledge, the only reported X-ray mononuclear structure lacking halogen substituents is Me 6 Sb ‫מ‬ Li ‫ם‬ (THF) 4 , which was recently reported by Seppelt [9], although some dinuclear complexes, such as [Ph 2 Sb(C 2 O 4 ) 2 ] 2 [10], have been reported [8]. In this article, we report the synthesis and X-ray crystal structures of Rf 3 Sb ‫מ‬ Et 4 N ‫ם‬ (Rf: o-C 6 H 4 C(CF 3 ) 2 O-: Martin ligand) (2-Et 4 N) and the Oethylated adduct (3).…”