Binuclear Triphenylantimony(V) Catecholate Based on Redox-Active Bis-<Emphasis Type="Italic">o</Emphasis>-Benzoquinone,a Bis-Catechol-Aldimine Derivative |
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Authors: | M?V?Arsen’ev L?S?Okhlopkova Email author" target="_blank">A?I?Poddel’skiiEmail author G?K?Fukin |
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Institution: | 1.Razuvaev Institute of Organometallic Chemistry,Russian Academy of Sciences,Nizhny Novgorod,Russia |
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Abstract: | The oxidative addition of bis-o-benzoquinone Q–(CH=N–N=CH)–Q (L), in which two 3,5-ditert-butyl-o-benzoquinones are linked to each other in positions 6 via the CH=N–N=CH group, to triphenylstibine gave a new binuclear triphenylantimony(V) bis-catecholate complex, Ph3Sb(Cat–(CH=N–N=CH)–Cat)SbPh3 (I). Recrystallization of I from a methanol–trichloromethane mixture resulted in an additional coordination of a methanol molecule to each antimony atom to give the binuclear complex, (CH3OH)Ph3Sb(Cat–(CH=N–N=CH)–Cat)SbPh3(CH3OH) (I · 2CH3OH), the crystals of which (I · 2CH3OH) · 2CH3OH · CHCl3 (II) contain additionally two methanol solvate molecules, which fix the geometry of the nitrogen-containing bridging group, and a trichloromethane molecule. The molecular structure of compound II in the crystalline state was determined by X-ray diffraction (CIF file CCDC no. 1560840). |
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