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Showing 1 to 12 of 28 entries
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Nickel promoted functionalization of CO2 to anhydrides and ketoacids.

Dalton transactions (Cambridge, England : 2003)

Greenburg ZR, Jin D, G Williard P, Bernskoetter WH.
PMID: 25232928
Dalton Trans. 2014 Nov 14;43(42):15990-6. doi: 10.1039/c4dt01221f.

The reductive functionalization of carbon dioxide into high value organics was accomplished via the coupling with carbon monoxide and ethylene/propylene at a zerovalent nickel species bearing the 2-((di-t-butylphosphino)methyl)pyridine ligand (PN). An initial oxidative coupling between carbon dioxide, olefin, and...

Dinitrogen functionalization with terminal alkynes, amines, and hydrazines promoted by [(eta5-C5Me4H)2Zr]2(mu2,eta2,eta2-N2): observation of side-on and end-on diazenido complexes in the reduction of N2 to hydrazine.

Journal of the American Chemical Society

Bernskoetter WH, Pool JA, Lobkovsky E, Chirik PJ.
PMID: 15913380
J Am Chem Soc. 2005 Jun 01;127(21):7901-11. doi: 10.1021/ja050387b.

Functionalization of the N2 ligand in the side-on bound dinitrogen complex, [(eta5-C5Me4H)2Zr]2(mu2,eta2,eta2-N2), has been accomplished by addition of terminal alkynes to furnish acetylide zirconocene diazenido complexes, [(eta5-C5Me4H)2Zr(C[triple bond]CR)]2(mu2,eta2,eta2-N2H2) (R = nBu, tBu, Ph). Characterization of [(eta5-C5Me4H)2Zr(C[triple bond]CCMe3)]2(mu2,eta2,eta2-N2H2) by X-ray...

C-H bond activation and S-atom transfer from cobalt(III) thiolate and isothiocyanate complexes.

Dalton transactions (Cambridge, England : 2003)

Xu H, Williard PG, Bernskoetter WH.
PMID: 25142273
Dalton Trans. 2014 Oct 21;43(39):14696-700. doi: 10.1039/c4dt01823k.

The cobalt phenylthiolate complex, cis,mer-(PMe3)3Co(CH3)2SPh, was found to undergo competitive two-electron ethane reductive elimination and C-H bond cyclometallation. The thiophenolato bound cobaltacycle was generated via C-H bond oxidative addition to a five-coordinate intermediate followed by rapid methane elimination. A...

Mechanistic considerations for C-C bond reductive coupling at a cobalt(III) center.

Journal of the American Chemical Society

Xu H, Bernskoetter WH.
PMID: 21895015
J Am Chem Soc. 2011 Sep 28;133(38):14956-9. doi: 10.1021/ja2072548. Epub 2011 Sep 07.

The diamagnetic cobalt(III) dimethyl complex, cis,mer-(PMe(3))(3)Co(CH(3))(2)I, was found to promote selective C-C bond formation, affording ethane and triplet (PMe(3))(3)CoI. The mechanism of reductive elimination has been investigated by a series of kinetic and isotopic-labeling experiments. Ethane formation proceeds with...

Synthesis and structure of six-coordinate iron borohydride complexes supported by PNP ligands.

Inorganic chemistry

Koehne I, Schmeier TJ, Bielinski EA, Pan CJ, Lagaditis PO, Bernskoetter WH, Takase MK, Würtele C, Hazari N, Schneider S.
PMID: 24499462
Inorg Chem. 2014 Feb 17;53(4):2133-43. doi: 10.1021/ic402762v. Epub 2014 Feb 05.

The preparation of a number of iron complexes supported by ligands of the type HN{CH2CH2(PR2)}2 [R = isopropyl (((i)Pr)PNP) or cyclohexyl ((Cy)PNP)] is reported. This is the first time this important bifunctional ligand has been coordinated to iron. The...

Understanding the Individual and Combined Effects of Solvent and Lewis Acid on CO.

Journal of the American Chemical Society

Heimann JE, Bernskoetter WH, Hazari N.
PMID: 31244180
J Am Chem Soc. 2019 Jul 03;141(26):10520-10529. doi: 10.1021/jacs.9b05192. Epub 2019 Jun 21.

The insertion of CO

Control of Catalyst Isomers Using an .

Inorganic chemistry

Curley JB, Hert C, Bernskoetter WH, Hazari N, Mercado BQ.
PMID: 34955015
Inorg Chem. 2022 Jan 10;61(1):643-656. doi: 10.1021/acs.inorgchem.1c03372. Epub 2021 Dec 25.

A novel pincer ligand,

The Role of Proton Shuttles in the Reversible Activation of Hydrogen via Metal-Ligand Cooperation.

Journal of the American Chemical Society

Smith NE, Bernskoetter WH, Hazari N.
PMID: 31617710
J Am Chem Soc. 2019 Oct 30;141(43):17350-17360. doi: 10.1021/jacs.9b09062. Epub 2019 Oct 16.

The reversible activation of H

Rational selection of co-catalysts for the deaminative hydrogenation of amides.

Chemical science

Artús Suàrez L, Jayarathne U, Balcells D, Bernskoetter WH, Hazari N, Jaraiz M, Nova A.
PMID: 32190278
Chem Sci. 2020 Jan 20;11(8):2225-2230. doi: 10.1039/c9sc03812d. eCollection 2020 Feb 28.

The catalytic hydrogenation of amides is an atom economical method to synthesize amines. Previously, it was serendipitously discovered that the combination of a secondary amide co-catalyst with (

Effective Pincer Cobalt Precatalysts for Lewis Acid Assisted CO2 Hydrogenation.

Inorganic chemistry

Spentzos AZ, Barnes CL, Bernskoetter WH.
PMID: 27454669
Inorg Chem. 2016 Aug 15;55(16):8225-33. doi: 10.1021/acs.inorgchem.6b01454. Epub 2016 Jul 25.

The pincer ligand MeN[CH2CH2(P(i)Pr2)]2 ((iPr)PNP) was employed to support a series of cobalt(I) complexes, which were crystallographically characterized. A cobalt monochloride species, ((iPr)PNP)CoCl, served as a precursor for the preparation of several cobalt precatalysts for CO2 hydrogenation, including a...

Reductive functionalization of carbon dioxide to methyl acrylate at zerovalent tungsten.

Dalton transactions (Cambridge, England : 2003)

Wolfe JM, Bernskoetter WH.
PMID: 22850616
Dalton Trans. 2012 Sep 21;41(35):10763-8. doi: 10.1039/c2dt31032e. Epub 2012 Jul 31.

Alkali metal reduction of tungsten tetrachloride in the presence of excess trimethylphosphite and ethylene affords moderate yields of trans-tetrakis(trimethylphosphite)tungsten bis(ethylene). This easily prepared species bearing inexpensive ancillary ligands promotes the oxidative coupling of carbon dioxide and ethylene at ambient...

Homolytic H2 cleavage by a mercury-bridged Ni(I) pincer complex [{(PNP)Ni}2{μ-Hg}].

Chemical communications (Cambridge, England)

Kreye M, Freytag M, Jones PG, Williard PG, Bernskoetter WH, Walter MD.
PMID: 25588774
Chem Commun (Camb). 2015 Feb 18;51(14):2946-9. doi: 10.1039/c4cc09743b.

Reduction of the pincer nickel(ii) complex [(PNP)NiBr] with sodium amalgam (Na/Hg) forms the mercury-bridged dimer [{(PNP)Ni}2{μ-Hg}], which homolytically cleaves dihydrogen to form [(PNP)NiH]. Reversible CO2 insertion into the Ni-H bond is observed for [(PNP)NiH], forming the monodentate κ(1)O-formate complex...

Showing 1 to 12 of 28 entries