The structure and characterization of zinc heteroscorpionate complexes containing pentafluorothiophenol

The Zn(II)-CH3 complexes of the heteroscorpionate ligands (3-tert-butyl-2-h ydroxy(or thio)-5-methylphenyl)bis(3,5-dimethyl-pyrazolyl)methane, L1OH or L2SH react with pentafluorothiophenol (HSPhF5). For [(L1O)ZnCH3], this resu lted in the formation of the pseudo-tetrahedral Zn(II) complexes [(L1O)ZnSP hF5] (1) or [(L1OH)Zn(SPhF5)(2)] depending on the ratio of pentafluorothiop henol used. However, when [(L2S)ZnCH3] was reacted with 1 or 2 equiv. of HS PhF5, in addition to the expected [(L1S)ZnSPhF5] (2) or [(L1SH)Zn(SPhF5)(2) ] (3), one additional product, [(L2S)Zn(L2S)Zn(SPhF5)(2)] (4) was observed. The structures of four of the complexes, i.e. [(L1O)ZnSPhF5] (1), [(L2S)Zn SPhF5] (2), [(L2SH)Zn(SPhF5)(2)] (3), and [(L2S)Zn(L2S)Zn(SPhF5)(2)] (4) ha ve been determined by X-ray crystallography. (C) 2000 Elsevier Science S.A. All rights reserved.