oxidative addition of 3,6-di-tert-butyl-o-benzoquinone and 4,6-di-tert-butyl-n-(2,6-di-iso-propylphenyl)-o-iminobenzoquinone to sncl2文档.pdfVIP

oxidative addition of 3,6-di-tert-butyl-o-benzoquinone and 4,6-di-tert-butyl-n-(2,6-di-iso-propylphenyl)-o-iminobenzoquinone to sncl2文档.pdf

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oxidative addition of 3,6-di-tert-butyl-o-benzoquinone and 4,6-di-tert-butyl-n-(2,6-di-iso-propylphenyl)-o-iminobenzoquinone to sncl2文档

Inorganica Chimica Acta 358 (2005) 4443–4450 /locate/ica Oxidative addition of 3,6-di-tert-butyl-o-benzoquinone and 4,6-di-tert-butyl-N-(2,6-di-iso-propylphenyl)-o-iminobenzoquinone to SnCl2 Aryna V. Lado a, Andrey I. Poddelsky a, Alexander V. Piskunov a,*, Georgy K. Fukin a, Evgenii V. Baranov a, Vladimir N. Ikorskii b,1, Vladimir K. Cherkasov a, Gleb A. Abakumov a a G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Laboratory of the Chemistry of Organoelemental compounds, 49 Tropinina Street, 603950 Nizhny Novgorod, Russia b International Tomography Centre SD Russian Academy of Sciences, 3a Institutskaya Street, 630090 Novosibirsk, Russia Received 29 March 2005; received in revised form 19 September 2005; accepted 28 September 2005 Available online 3 November 2005 Abstract Addition of 3,6-di-tert-butyl-o-benzoquinone (3,6-DBBQ) to SnCl2 in THF leads to the oxidation of Sn(II) to Sn(IV) with formation of catecholate complex (3,6-DBCat)SnCl2 Æ 2THF (1), where 3,6-DBCat is 3,6-di-tert-butyl-catecholate dianion. The reaction of 4,6-di- tert-butyl-N-(2,6-di-iso-propylphenyl)-o-iminobenzoquinone (IBQ-Pri) also proceeds on the oxidative-addition mechanism yielding bis-iminosemiquinonato species (ISQ-Pri i ) SnCl (2), where ISQ-Pr is anion-radical 4,6-di-tert-butyl-N-(2,6-di-iso-propylphenyl)-o-imino-

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