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• W1980173432 abstract "The compound 2,2′:6′,2″:6″,2‴:6‴,2″″:6″″,2″‴-sexipyridine (spy) has been synthesised in high yield by the coupling of 6-bromo-2,2′:6′,2″-terpyridine with a nickel(0) reagent, followed by demetallation of the resultant double-helical [Ni2(spy)2]4+ complex with KCN. In order to probe the effects of substitution of spy upon helication processes, the substituted compounds 4′,4″″-bis(methylsulfanyl)-2,2′:6′,2″:6″,2‴:6‴,2″″:6″″,2″‴-sexipyridine (msspy), 4′,4″″-diphenyl-2,2′:6′,2″:6″,2‴:6‴,2″″:6″″,2″‴-sexipyridine (pspy) and 4′,4″″-bis(4-tert-butylphenyl)-2,2′:6′,2″:6″,2‴:6‴,2″″:6″″,2″‴-sexipyridine (tbspy) were also prepared and studied. The reaction of each of these compounds with transition-metal ions capable of adopting an octahedral geometry results in the self-assembly of dinuclear double-helical complexes of the type [M2L2]4+[M = iron(II), cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II) or mercury(II); L = spy, msspy, pspy or tbspy]; the double-helical topology of the zinc complex of pspy was confirmed by a crystal-structure analysis of the salt [Zn2(pspy)2][PF6]4·2MeCN·2H2O [space group P42212, a= 15.518(2), c= 18.443(1)Å, R= 0.0638, R′= 0.0735]." @default.
• W1980173432 created "2016-06-24" @default.
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• W1980173432 date "1996-01-01" @default.
• W1980173432 modified "2023-10-09" @default.
• W1980173432 title "A convenient high yield synthesis of 2,2′:6′,2″:6″,2‴:6‴,2″″ :6″″,2″‴-sexipyridine and helical transition-metal complexes of substituted sexipyridines" @default.
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• W1980173432 doi "https://doi.org/10.1039/dt9960004207" @default.
• W1980173432 hasPublicationYear "1996" @default.
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