Indium(III) halide-3,5-di-tert-butyl-o-benzosemiquinone systems
| Autor: | Ahmed A. El-Hadad, Theodore A. Annan, Bruce R. McGarvey, Dennis G. Tuck, Martyn A. Brown, Andrzej Ozarowski |
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| Rok vydání: | 1994 |
| Předmět: |
Ligand
Stereochemistry chemistry.chemical_element Halide Disproportionation Adduct law.invention Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry law Pyridine Materials Chemistry Physical and Theoretical Chemistry Electron paramagnetic resonance Indium Monoclinic crystal system |
| Zdroj: | Inorganica Chimica Acta. 225:207-213 |
| ISSN: | 0020-1693 |
| Popis: | The reaction of InX3 (X Cl, Br, I) with 2 mol of Na+TBSQ·− (TBSQ·− =3,5-di-t-butyl-o-benzosemiquinonate anion) yields solutions of the diradicals InX(TBSQ)2, whose EPR spectra have been recorded. Addition of pyridine or γ-picoline (L) to such solutions produces adducts of the 3,5-di-t-butylcatecholate-indium(III) halide, of the type In(TBC)XLn. The mechanism of these reactions, and of the related ligand replacement and disproportionation equilibria, is discussed in terms of internal one-electron transfer processes. The compound In(TBC)(pic)2·DMF has been the subject of an X-ray crystallographic study. The substance forms monoclinic crystals, space group P21/n with a=12.992(5), b=13.923(4), c=18.491(4) A, β=98.82(2)o, Z=4, R=0.053 for 3244 unique reflections. The molecule is dimeric, with a central In2O2 ring, involving six-coordinate indium(III). |
| Databáze: | OpenAIRE |
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