Rabindranath Maiti
Articles written in Journal of Chemical Sciences
Volume 107 Issue 4 August 1995 pp 355-360
Sabyasa Chisarkar Ramji Sah Pradeep K Chaudhury Rabindranath Maiti Samar K Das
Facile reduction of the triangular {Mo3IV}6-core containing [Mo3S4 (CN)9]5− derivative is achieved in aqueous medium, containing the KOH-KCN-K2 [Zn(CN)4] ternary system as supporting electrolyte, in a two-step one-electron reduction reaction followed by an irreversible one. The diamagnetic species containing the {Mo3}8 core, obtained by chemical reduction of [Mo3S4(CN)9]5− with zinc in aqueous medium containing KOH-KCN, is oxidized by air in two steps. The partially oxidized species with {Mo3}7 core in the first step exhibits characteristic ESR signals which on further oxidation quantitatively reverts to the original compound with {Mo3}6 core displaying distinctly separate isosbestic points in the stepwise conversion of {Mo3}8 to {Mo3}7 and {Mo3}7 to {Mo3}6 cores. Under drastic reduction conditions with aluminium in 40% aqueous KOH solution the {Mo3}6 core is reduced to unstable trinuclear {Mo3III}9 core which expands to tetrahedral {Mo4III}12-core containing [Mo4S4(CN)12]8− derivative according to electron-precise cluster rule.
Volume 135, 2023
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2022-2023 Indian Academy of Sciences, Bengaluru.