23648-06-8

Usage

Uses

Used in Solar Energy Conversion:
Os(Bpy)3 (2+) is used as a photosensitizer for its strong absorption of visible light, enabling efficient solar energy conversion and photocatalytic reactions.
Used in Artificial Photosynthesis Systems:
Os(Bpy)3 (2+) is used as a catalyst in artificial photosynthesis systems, facilitating light-driven chemical reactions and mimicking natural photosynthesis processes.
Used in Photocatalytic Reactions:
Os(Bpy)3 (2+) is used as a catalyst in photocatalytic reactions due to its stability under photochemical conditions and ability to drive light-induced chemical transformations.
Used in Environmental Applications:
Os(Bpy)3 (2+) is utilized in environmental applications for its potential to address various environmental challenges, such as pollution control and resource recovery, through its photocatalytic properties.

Upstream product

• 366-18-7 [2,2]bipyridinyl 
• 15702-72-4 bis(2,2'-bipyridine)osmium(II) dichloride 
• 30032-51-0 tris(2,2'-bipyridine)osmium(III)⁽³⁺⁾ 
• 373388-93-3 cis-[Ru(2,2'-bipyridine)(pyridine)(OH)]⁽²⁺⁾ 
• 161443-85-2 cis-[Ru(2,2'-bipyridine)(pyridine)(OH₂)]⁽²⁺⁾ 
• 7732-18-5 water 
• 34504-17-1 (SCN)2 radical anion 
• 1307-81-9 Na₂OsCl₆*xH₂O 
• 96042-39-6 Mn(ethylenediaminetetraacetate)(OH₂)^(2-) 
• 46310-14-9 4,4'-e,e-cyclohexylcyclohexanediol 
• 64-19-7 acetic acid 
• 101-84-8 diphenylether 
• 92-88-6 4,4'-Dihydroxybiphenyl 

Downstream Products

• 30032-51-0 tris(2,2'-bipyridine)osmium(III)⁽³⁺⁾ 
• 14362-44-8 iodide 
• 373388-93-3 cis-[Ru(2,2'-bipyridine)(pyridine)(OH)]⁽²⁺⁾ 
• 161443-85-2 cis-[Ru(2,2'-bipyridine)(pyridine)(OH₂)]⁽²⁺⁾ 
• 302-04-5 Thiocyanate 

Relevant academic research and scientific papers

Instability of the oxidation catalysts [OsIII(tpy)(bpy)(py)] 3+ and [OsIII(bpy)3]3+ in alkaline solution

The Os(III) complexes [OsIII(tpy)(bpy)(py)]3+ and [OsIII(bpy)3]3+ (bpy: 2,2′-bipyridine, py: pyridine, tpy: 2,2′,2″-terpyridine) are unstable toward self-reduction in alkaline solution. Product analysis performed by using UV-Vis spectroscopy, cyclic voltammetry, HPLC and GC show that ca. 90% of the reduced product that appears is the unmodified polypyridyl complex of Os(II), [Os II(tpy)(bpy)(py)]2+ or [OsII(bpy) 3]2+. The remaining 10% of the products are accounted for by other Os(II) complexes, including several which appear to have undergone varying degrees of ligand oxidation or substitution. Another product of the reduction of [OsIII(tpy)(bpy)(py)]3+ in basic solution has been identified as [OsII(tpy)(bpy)(OH2)]2+ which results from metal reduction and concomitant pyridine ligand loss. No O2 was detected as a product of the base-catalyzed self-reduction reaction. The Os(III) complexes are stable towards self-reduction and ligand loss in the dark in acetonitrile or aqueous solutions buffered below pH = 6. The rates observed for the self-reduction processes are sufficiently rapid at pH values above 7 that useful catalytic rate data cannot be obtained in basic solution unless the substrate of interest is sufficiently reactive and is present in large excess. Triple mixing, pH jump techniques have successfully been employed to observe reaction rates under strongly alkaline conditions.

Mechanistic implications of proton transfer coupled to electron transfer

The kinetics of electron transfer for the reactions cis-[RuIV(bpy)2(py)(O)]2+ + H+ + [OsII(bpy)3]2+ ? cis-[RuIII(bpy)2(py)(OH)]2+ + [OsIII/

Ruthenate(VI)-catalysed dehydrogenation of primary amines to nitriles, and crystal structures of cis-2*0.5MeOH and cis-2*CH2Cl2

Catalytic dehydrogenation of benzylic and other primary amines RCH2NH2 to the corresponding nitriles RCN by the system trans-2-/S2O82- has been investigated.The complex cis-2+ and the new cis-2+ (R = o-, m- or p-ClC6H4, o-MeC6H4, o- or p-MeOC6H4); cis-2+ (R = Ph or p-MeOC6H4) and cis-2+ have been made, and dehydrogenation of the co-ordinated amine in the ruthenium complexes to the corresponding nitriles in cis-2+ (L-L = bipy or phen) by peroxodisulfate demonstrated.The crystal structures of cis-*0.5MeOH and cis-2*CH2Cl2, the latter a product of co-ordinated amine dehydrogenation by peroxodisulfate to give cis-2+, were determined.Raman, infrared and 1H NMR data for the complexes have been measured; the latter suggest that the cis configurations of the amine complexes are retained in solution.

Electron-transfer reactions of manganese(II) and -(III) polyamino carboxylate complexes in aqueous media

The kinetics of electron-transfer reactions involving the manganese(II) and -(III) complexes of ethylenediaminetetraacetate (edta4-) and trans-1,2-cyclohexanediaminetetraacetate (cdta4-) have been investigated in aqueous media. The cross-reactants employed in this study are osmium and cobalt tris(polypyridine) complexes, IrCl62-, and nickel polyaza complexes. The cross-reaction kinetic data have been correlated in terms of the Marcus relationship for outer-sphere electron-transfer reactions, and a self-exchange rate constant of 0.7 ± 0.4 M-1 s-1 was derived for the Mn(edta)(OH2)2-/- and Mn(cdta)(OH2)2-/- couples at 25°C. Deviations from this correlation were observed for the metal tris(polypyridine) complexes (reduced rate constants attributed to poor orbital overlap and hydrophobic/hydrophilic repulsions) and for a nickel(II) dioxime species, Ni(Hdiox)+ (enhanced reactivity related to a hydrogen-bonded precursor). The self-exchange rate constant is discussed in terms of the inner-sphere reorganization barriers to the exchange of an antibonding dσ* electron.

Outer-sphere oxidation. 2. 1 Pulse-radiolysis study of the rates of reaction of the I2-. and (SCN)2-. Radical anions with the tris(2,2′-bipyridyl)2 complexes of Os(II) and Os(III)

The rate constants at 22°C and an ionic strength of 0.1 M for the following reactions are (Chemical Equation Presented) No adduct intermediates were detected. Formal reduction potentials for the following couples under the above conditions are as follows: Os(bpy)33+-Os(bpy)32+, 0.857 ± 0.004 V; I2-·-I-, 1.063 ± 0.011 V; I2-·I2,0.172 ± 0.011 V; (SCN)2-·-SCN-, 1.331 ± 0.008 V.