The Fe(III), Co(III), and V(III) Complexes of the “Heteroscorpionate” Ligand (2-Thiophenyl)bis(pyrazolyl)methane
1998; American Chemical Society; Volume: 37; Issue: 10 Linguagem: Inglês
10.1021/ic971151e
ISSN1520-510X
AutoresTimothy C. Higgs, David Ji, Roman S. Czernuszewicz, Berthold F. Matzanke, Volker Schünemann, Alfred X. Trautwein, Madeleine Helliwell, Wilfredo Ramirez, Carl J. Carrano,
Tópico(s)Magnetism in coordination complexes
ResumoThe synthesis and characterization of the tridentate "heteroscorpionate" mixed functionality ligand, (2-thiophenyl)bis(pyrazolyl)methane, L1, is reported. This ligand was used to synthesize the complexes, [Fe(L1)2][ClO4], [Co(L1)2][BPh4], and [V(L1)2][BPh4]. X-ray crystallographic analysis of the latter two complexes gave the following structural parameters: [V(L1)2][BPh4]·MeCN·iPr2O, C58H57N9B1O1S2V1, monoclinic, a = 16.197(2) Å, b = 19.281(2) Å, c = 17.985(2) Å, β = 102.343(9)°, space group P21/c; [Co(L1)2][BPh4]·CH2Cl2, C51H42N8B1Cl2Co1S2, triclinic, a = 12.751(1) Å, b = 12.830(1) Å, c = 14.740(1) Å, α = 98.351(7)°, β = 98.122(6)°, γ = 97.023(8)°, space group P1̄. An example of the use of this new class of "heteroscorpionate" ligands for systematic comparisons of electronic properties of metal complexes with identical topology that vary only in the nature of one of the donor atoms is given.
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