Free radicals observed in reactions of acenaphthoquinone (AQ) and benzo[2,1-b;3,4-b']dithiophen-4.5-dione (TQ) with the series of compound SnPhnX4-n (n = 3, X = H, Cl; N = 2, X = Cl; n = 0, X = Cl) have been characterised by esr spectroscopy. Coupling to only a single chlorine nucleus is detectable in radical adducts containing two or thee chlorine atoms. The implications of this observation are discussed in terms of structures involving a five-coordinate tin atom. Activation parameters are rported for the intramolecular migration of SiPh3 and GePh3 groups between the oxygen atoms of TQ.
Structure and fluxional behaviour of the adducts of orthoquinones with organotin halides. An electron spin resonance study
Alberti A;
1980
Abstract
Free radicals observed in reactions of acenaphthoquinone (AQ) and benzo[2,1-b;3,4-b']dithiophen-4.5-dione (TQ) with the series of compound SnPhnX4-n (n = 3, X = H, Cl; N = 2, X = Cl; n = 0, X = Cl) have been characterised by esr spectroscopy. Coupling to only a single chlorine nucleus is detectable in radical adducts containing two or thee chlorine atoms. The implications of this observation are discussed in terms of structures involving a five-coordinate tin atom. Activation parameters are rported for the intramolecular migration of SiPh3 and GePh3 groups between the oxygen atoms of TQ.File in questo prodotto:
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