A Mechanistic Study on Reactions of Group 13 Diyls LM with Cp*SbX₂ : From Stibanyl Radicals to Antimony Hydrides.

ABSTRACT: Oxidative addition of Cp*SbX₂ (X=Cl, Br, I; Cp*=C₅ Me₅ ) to group 13 diyls LM (M=Al, Ga, In; L=HC[C(Me)N (Dip)]₂ , Dip=2,6-iPr₂ C₆ H₃ ) yields elemental antimony (M=Al) or the corresponding stibanylgallanes [L(X)Ga]Sb(X)Cp* (X=Br 1, I 2) and -indanes [L(X)In]Sb(X)Cp* (X=Cl 5, Br 6, I 7). 1 and 2 react with a second equivalent of LGa to eliminate decamethyl-1,1'-dihydrofulvalene (Cp*₂ ) and form stibanyl radicals [L(X)Ga]₂ Sb^. (X=Br 3, I 4), whereas analogous reactions of 5 and 6 with LIn selectively yield stibanes [L(X)In]₂ SbH (X=Cl 8, Br 9) by elimination of 1,2,3,4-tetramethylfulvene. The reactions are proposed to proceed via formation of [L(X)M]₂ SbCp* as

SUBMITTER: Helling C 

PROVIDER: S-EPMC7693246 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature