Title :
Electronic switch of metal conductivity in μ6-carbon centered [Re12(μ6-C)S17(CN)6]n− nano cluster
Author :
Fedorov, V.E. ; Gabuda, S.P. ; Kozlova, S.G. ; Mironov, Y.V. ; Naumov, N.G. ; Kim, S.J. ; Zakharchuk, N.F.
Author_Institution :
Nikolaev Inst. of Inorg. Chem., Siberian Branch of Russian Acad. of Sci., Novosibirsk, Russia
Abstract :
The unique dodecanuclear cluster compounds Mn[Re12(μ6-C)S17(CN)6] (M-alkali metal; n=6, 8) were prepared and studied by cyclic voltammetry, solid-state high-resolution 13C NMR and by density functional theory (DFT). The change of the anion redox state is accompanied by essential jump of distance between two {Re6} subunits in a carbon-centered bioctahedral fragment [Re6-C-Re6] of the cluster. Switching of metal conductivity off and on is evidenced by giant change of 13C NMR shielding that is typical for metal to insulator phase transitions.
Keywords :
NMR spectroscopy; atomic clusters; density functional theory; metal clusters; metal-insulator transition; nanostructured materials; voltammetry (chemical analysis); DFT; K6[Re12CS17(CN)6]; NMR shielding; anion redox state; carbon-centered bioctahedral fragment; cyclic voltammetry; density functional theory; dodecanuclear cluster compounds; electronic switch; metal conductivity; metal-insulator phase transition; solid-state high-resolution 13C NMR; Chemicals; Chemistry; Conductivity; Density functional theory; Electrons; Metal-insulator structures; Nuclear magnetic resonance; Oxidation; Spectroscopy; Switches;
Conference_Titel :
MIPRO, 2010 Proceedings of the 33rd International Convention
Conference_Location :
Opatija
Print_ISBN :
978-1-4244-7763-0
