Jonas Hoffmann

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Heterocycles that contain tin atoms can be aromatic in a similar sense to well-known aromatic compounds such as benzene or thiophene, but such examples are rare. However, due to the low-lying σ*-orbitals of the tin-substituent bond in stannoles, they are capable of σ* - π* conjugation in a way that is exclusive to heavier element containing heterocycles.(More)
The title compounds {systematic names (E)-[diazene-1,2-diylbis(3,1-phenyl-ene)]bis-(di-methyl-silanol) and (E)-[diazene-1,2-diylbis(4,1-phenyl-ene)]bis-(di-methyl-silanol)}, both of the sum formula C16H22N2O2Si2, were obtained by transmetallation of the respective bis-stannylated azo-benzenes with di-chloro-dimethyl-silane and esterification followed by(More)
We present the synthesis of a B-N analogue of polystyrene, poly(N-methyl-B-vinylazaborine) in high molecular weight (MW = 24.9 kDa). Furthermore, it was possible to prepare a copolymer with the C-C analogue. A thorough comparison between the polymers by NMR spectroscopy, TGA, DSC and GPC showed significant differences between these polymers.
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