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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4089

Title: Studies on the reactions of dihydrogen with salts of platinum carbonyl cluster anions (Chini clusters) and redox active countercations
Authors: BHADURI, S
SEN GUPTA, N
LAHIRI, GK
MATHUR, P
Keywords: nadh regeneration
visible-light
formate dehydrogenase
inorganic oligomers
liquid-membranes
hydride transfer
methyl viologen
reduction
catalysts
hydrogen
Issue Date: 2004
Publisher: AMER CHEMICAL SOC
Citation: ORGANOMETALLICS, 23(15), 3733-3740
Abstract: Reactions of A(n)[Pt-12(CO)(24)] (A methylene blue (MB+), safranine O (Saf(+)), nicotinamide benzyl chloride (BNA(+)), n = 2; A methylviologen (MV2+), n = 1) with dihydrogen in DMF and DMSO have been studied. Spectroscopic (NMR, ESR, and UV-vis) monitoring shows selective and total reduction of MB+, Saf(+), and MV2+ to MBH, SafH, and MV+ respectively, accompanied by conversion of [Pt-12(CO)(24)](2-) to [Pt-9(CO)(18)](2-). No BNAH (analogue and model for NADH) is formed in the reaction of [BNA](2)[Pt-12(CO)(24)] with dihydrogen. However, in the reactions of BNA(+)Cl(-), [Saf](2)[Pt-12(CO)(24)], and dihydrogen, BNAH is formed in small quantities in DMSO and quantitatively in a biphasic system (water and dichloromethane). The redox behaviors of MB+, Saf(+), MV2+, and BNA(+) as chloride salts have also been studied in DMF by cyclic voltammetry, and the data have been used to rationalize some of the observed reactions. The dihydrogen-driven, [Bu4N](2)[Pt-12(CO)(24)]-catalyzed transport of A(+) (A(divided by) = MB+, Saf(+)) as AH through a liquid membrane has also been studied.
URI: http://dx.doi.org/10.1021/om049833e
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4089
http://hdl.handle.net/10054/4089
ISSN: 0276-7333
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