Pincer ligand coordination at a triosmium cluster: X-ray structures of 1,2-Os3(CO)10[4,6-bis(diphenylphosphinomethyl)-m-xylene] and 1,2-Os3(CO)10[1-diphenylphosphino-1-{(2,4-dimethyl-5-diphenylphosphinomethyl)phenyl}-propan-2-ol]

Нестеров, В. Н.; Poola, Bhaskar; Wang, Xiaoping; Richmond, Michael G.

doi:10.1016/j.jorganchem.2006.10.021

Cited by 9 publications

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References 35 publications

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“…CNO, CNC, and PNP osmium pincers have been synthesized, and recently neutral POP ether pincer ligands have been used to make osmium catalysts for the alkylation of amines with alcohols . There have been several reports of osmium PCP pincer systems in the literature employing Ph PCP, , t Bu PCP, and i Pr PCP . Gusev has reported that metalation of t Bu PCPH with [Et 4 N] 2 OsCl 6 in alcohol solvents yields the osmium complexes ( t Bu PCP)OsCl(CO) and ( t Bu PCP)Os(H) 2 Cl .…”

Section: Resultsmentioning

confidence: 99%

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)

et al. 2013

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Syntheses of osmium analogues of acceptor pincer ( CF 3 PCP)Ru-(II) systems are reported. Treatment of [Et 4 N] 2 OsCl 6 with CF 3 PCPH at 130 °C in ethanol in the presence of Et 3 N gave the coordinatively saturated anionic carbonyl complex HNEt 3 + [( CF 3 PCP)Os(CO)Cl 2 ] − , which subsequently may be converted to cis-( CF 3 PCP)Os(CO) 2 Cl or cis-( CF 3 PCP)Os(CO) 2 H by reaction with Me 3 SiOTf or (Et 3 Si) 2 (μ-H) + B(C 6 F 5 ) 4 −, respectively. ( CF 3 PCP)Os(cod)H was obtained in modest yields by thermolysis of Os(cod)(η 3 -2-methylallyl) 2 with CF 3 PCPH in neat cod under 3 atm of H 2 at 130 °C. The alkane dehydrogenation activity of ( CF 3 PCP)Os(cod)H was examined: under identical conditions to previously studied ( CF 3 PCP)Ru(cod)H (1:1 cyclooctane/tert-butylethylene, 200 °C), the initial turnover rate for cyclooctene production was 1520 h −1 , 75% the rate observed for the ruthenium analogue, but with significantly enhanced catalyst lifetime. Acceptorless cyclodecane dehydrogenation under reflux conditions gave 125 turnovers of cyclodecenes in one hour. Spectroscopic evidence on the nature of the catalyst resting state and catalyst thermal and air stability is presented.

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Section: Resultsmentioning

confidence: 99%

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)

et al. 2013

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DPPXY, dppxy

Lincoln¹

2020

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Ligand Substitution Chemistry of the Diphosphine Ligand endo,endo-2,3-Bis(diphenylphosphinomethyl)-5-norbornene (dpmn): Syntheses and X-ray Diffraction Structures of PtCl2(dmn) and PtMe2(dpmn)

et al. 2009

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Pincer ligand coordination at a triosmium cluster: X-ray structures of 1,2-Os3(CO)10[4,6-bis(diphenylphosphinomethyl)-m-xylene] and 1,2-Os3(CO)10[1-diphenylphosphino-1-{(2,4-dimethyl-5-diphenylphosphinomethyl)phenyl}-propan-2-ol]

Cited by 9 publications

References 35 publications

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)

DPPXY, dppxy

Ligand Substitution Chemistry of the Diphosphine Ligand endo,endo-2,3-Bis(diphenylphosphinomethyl)-5-norbornene (dpmn): Syntheses and X-ray Diffraction Structures of PtCl2(dmn) and PtMe2(dpmn)

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Pincer ligand coordination at a triosmium cluster: X-ray structures of 1,2-Os3(CO)10[4,6-bis(diphenylphosphinomethyl)-m-xylene] and 1,2-Os3(CO)10[1-diphenylphosphino-1-{(2,4-dimethyl-5-diphenylphosphinomethyl)phenyl}-propan-2-ol]

Cited by 9 publications

References 35 publications

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (CF3PCP)Os(cod)(H)

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (CF3PCP)Os(cod)(H)

DPPXY, dppxy

Ligand Substitution Chemistry of the Diphosphine Ligand endo,endo-2,3-Bis(diphenylphosphinomethyl)-5-norbornene (dpmn): Syntheses and X-ray Diffraction Structures of PtCl2(dmn) and PtMe2(dpmn)

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Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)

Acceptor Pincer Chemistry of Osmium: Catalytic Alkane Dehydrogenation by (^CF₃PCP)Os(cod)(H)