Reactions of the face-capped benzothiazolate-substituted clusters Os3(CO)9(μ3,η2-C7H3NSR)(μ-H) (R = H, Me) with PPh3: Kinetic formation of Os3(CO)9(PPh3)(μ,η2-C7H3NSR)(μ-H) and thermally induced ligand isomerization

The reaction of the electron-deficient 6-methoxyquinolinate-substituted triosmium cluster [Os3(CO)9{μ3-η 1 ,κ 1-C9H5N(6-OMe)}(μ-H)] (1) with PPh3 proceeds readily at room temperature to afford the electron-precise adduct [Os3(CO)9(PPh3){μ-η 1 ,κ 1-C9H5N(6-OMe)}(μ-H)] (2), in which the PPh3 ligand is bound to the osmium that serves as the coordination site for the hydride and the metallated-carbon atom of the benzoheterocycle. This reaction also leads to a change in the hapticity of the 6-methoxyquinolinate ligand from μ3-η 1 ,κ 1 to μ-η 1 ,κ 1 as confirmed by X-ray crystallography. Thermolysis of 2 in boiling toluene furnishes five new triosmium clusters (3-7) as a result of ligand isomerization, decarbonylation and orthometallation of the ancillary PPh3 ligand. Clusters 3 and 4 are isomers of 2 and the location of the metal-bound hydride and PPh3 with respect to 6methoxyquinolinate moiety is the only difference between these isomers. Control experiments show that 5 is a decarbonylation product of 4 which converts in to 6 as a result of further decarbonylation with concomitant orthometallation of one of the phenyl rings of the coordinated PPh3 ligand, whilst 7 is formed from 6 through replacement of an equatorial 2 carbonyl of the nitrogen-bound osmium by PPh3 ligand. All the new clusters have been characterized by a combination of analytical and spectroscopic methods as well as by X-ray crystallography in the case of 2, 3, 6 and 7.

show abstract

Reaction of electron-deficient 6-methoxyquinolinate-substituted cluster [Os3(CO)9{μ3-η1,κ1-C9H5N(6-OMe)}(μ-H)] with PPh3: Thermally induced ligand isomerization, decarbonylation and orthometallation

Begum

Chowdhury

Ghosh

et al. 2018

Inorganica Chimica Acta

Self Cite

View full text Add to dashboard Cite

show abstract

C‒H activation of caffeine at triruthenium and triosmium centers

Alam

Mia

Mamun

et al. 2021

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

Reactions of [HOs3(CO)10(µ-L)] (L = saccharinate, thiosaccharinate) with Ph3SnH and Ph3GeH

Reza¹,

Ghosh²

2021

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Reactions of the face-capped benzothiazolate-substituted clusters Os3(CO)9(μ3,η2-C7H3NSR)(μ-H) (R = H, Me) with PPh3: Kinetic formation of Os3(CO)9(PPh3)(μ,η2-C7H3NSR)(μ-H) and thermally induced ligand isomerization

Cited by 5 publications

References 45 publications

Reaction of electron-deficient 6-methoxyquinolinate-substituted cluster [Os3(CO)9{μ3-η1,κ1-C9H5N(6-OMe)}(μ-H)] with PPh3: Thermally induced ligand isomerization, decarbonylation and orthometallation

Reaction of electron-deficient 6-methoxyquinolinate-substituted cluster [Os3(CO)9{μ3-η1,κ1-C9H5N(6-OMe)}(μ-H)] with PPh3: Thermally induced ligand isomerization, decarbonylation and orthometallation

C‒H activation of caffeine at triruthenium and triosmium centers

Reactions of [HOs3(CO)10(µ-L)] (L = saccharinate, thiosaccharinate) with Ph3SnH and Ph3GeH

Contact Info

Product

Resources

About