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• W2022957451 abstract "Bis[(2-dimethylaminomethyl)phenyl] diselenide (RSe)2 was obtained by the organolithium route. It underwent facile reaction with stoichiometric amounts of bromine and iodine to give the corresponding arylselenium halides RSeBr and novel RSeI in which the selenium is covalently bonded to iodine. With an excess of bromine it gave the corresponding tribromide RSeBr3 but a similar reaction with iodine gave only RSeI. With diazomethane it gave the selenoether (RSe)2CH2 and with HCl the known bis(hydrochloride)(RSe)2·2HCl. A catalytic conversion of alkenes into allylic acetates using (RSe)2 was carried out. The compounds were characterised by elemental analyses, mass, multinuclear NMR (1H, 13C, 77Se), IR, Fourier-transform-Raman spectrometry and conductance measurements. The compound RSeBr3 shows evidence for the existence of Se ⋯ N interaction in solution and was found to equilibrate between co-ordinated and non-co-ordinated forms. The structures of the diselenide (RSe)2 and its bromo derivative RSeBr were determined by X-ray crystallography. The compounds are isostructural and exhibit Se ⋯ N intramolecular co-ordination. The Se atom has T-shaped three-co-ordination in both structures and the five-membered chelate rings formed by the Se, C and N atoms are puckered and exist in an envelope conformation. The Se ⋯ N interaction in RSeBr [Se–N 2.143(6)Å] is, however, considerably stronger than that in (RSe)2[Se(1)–N(1) 2.856(3), Se(2)–N(2) 2.863(4)Å]." @default.
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• W2022957451 date "1996-01-01" @default.
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• W2022957451 title "Synthesis, characterisation and reactions of bis[2-(dimethylaminomethyl)-phenyl] diselenide: its structure and that of [2-(dimethylaminomethyl)phenyl]-selenium bromide" @default.
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• W2022957451 doi "https://doi.org/10.1039/dt9960002719" @default.
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