Johnson Group Chemistry

RESEARCH INTERESTS

Inert bond activation (C-H, C-C, C-O, C-S, C-F), organometallic chemistry, nickel, clusters.

See what we are up to on our Group Twitter page: https://twitter.com/JohnsonGrpChem

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PUBLICATIONS

2019

[54] F Matthew R. Elsby, Junyang Liu, Sha Zhu, Lingfei Hu, Genping Huang*, and Samuel A. Johnson* “Influence of N-Heterocyclic Carbene Steric Bulk on Selectivity in Nickel Catalyzed C–H Bond Silylation, Germylation and Stannylation”, Organometallics ASAP. 2019. https://pubs.acs.org/doi/10.1021/acs.organomet.8b00786

2018

[53]F Shoshani, Manar M.; Semeniuchenko, Volodymyr; Samuel A. Johnson “Dismantling of Vinyl Ethers by Pentanuclear [(iPr3P)Ni]5H6: Facile Cooperative CO, CC and CH Activation Pathways” Chemistry-A European Journal, 2018, 24, 14282-14289. http://dx.doi.org/10.1002/chem.201803451

[52]F Shoshani, Manar M.; Liu, Junyang; Johnson, Samuel A. “Mechanistic Insight into H /D Exchange by a Pentanuclear Ni- H Cluster and Synthesis and Characterization of Structural Analogues of Potential Intermediates” Organometallics 2018, 37(1), 116-126. https://pubs.acs.org/doi/10.1021/acs.organomet.7b00763

[51]F Shoshani, Manar M.; Beck, Robert; Wang, Xiaoping; McLaughlin, Matthew J.; Johnson, Samuel A. “Synthesis of Surface- Analogue Square- Planar Tetranuclear Nickel Hydride Clusters and Bonding to μ4- NR, - O and - BH Ligands” Inorganic Chemistry 2018, 57(5), 2438-2446. (Invited “Skeeball” cover) https://pubs.acs.org/doi/10.1021/acs.inorgchem.7b02546

2017

[50]F Shoshani, Manar M.; Johnson, Samuel A. “Cooperative carbon- atom abstraction from alkenes in the core of a pentanuclear nickel cluster” Nature Chemistry 2017, 9(12), 1282-1285. https://www.nature.com/articles/nchem.2840.pdf

[49]F Elsby, Matthew R.; Johnson, Samuel A. “Nickel- Catalyzed C- H Silylation of Arenes with Vinylsilanes: Rapid and Reversible β- Si Elimination” Journal of the American Chemical Society 2017, 139(27), 9401-9407. Also featured in 2018 JACS Young Investigators Virtual Issue: https://pubs.acs.org/page/jacsat/vi/young-investigator2018.html https://pubs.acs.org/doi/10.1021/jacs.7b05574

[48]F Zhu, Sha; Shoshani, Manar M.; Johnson, Samuel A. “Versatile (η6- arene) Ni(PCy3) nickel monophosphine precursors" Chemical Communications 2017, 53(98), 13176-13179. https://pubs.rsc.org/en/content/articlehtml/2017/cc/c7cc08416a

[47]F Baird, Drake A.; Jamal, S.; Johnson, Samuel A. “Influence of the Transmetalating Agent in Difficult Coupling Reactions: Control in the Selectivity of C- F Bond Activation by Ni(0) Complexes in the Presence of AlMe3” Organometallics 2017, 36(7), 1436-1446. https://pubs.acs.org/doi/abs/10.1021/acs.organomet.7b00165

 

2015

[46]R Johnson, S. A.  “Nickel complexes for catalytic C-H bond functionalization” 2015 Dalton Trans., 44(24), 10905-10913. https://pubs.rsc.org/en/content/articlehtml/2015/dt/c5dt00032g

[45]F Shoshani, Manar M.; Johnson, Samuel A. “Facile Deep and Ultradeep Hydrodesulfurization by the [(iPr3P)Ni]5H6 Cluster Compared to Mononuclear Ni Sources” 2015 Inorg. Chem. , 54(24), 11977-11985. https://pubs.acs.org/doi/10.1021/acs.inorgchem.5b02383

[44]F Hatnean, Jillian A.; Johnson, Samuel A. “Diamagnetic molybdenum nitride complexes supported by diligating tripodal triamido-phosphine ligands as precursors to paramagnetic phosphine donors”  Dalton Transactions 2015, 44(33), 14925-14936. https://pubs.rsc.org/en/content/articlelanding/2015/dt/c5dt01415h

 

2014

[43]F Hatnean, Jillian A.; Shoshani, Manar; Johnson, Samuel A.  “Mechanistic insight into carbon-fluorine cleavage with a (iPr3P)2Ni source: Characterization of (iPr3P)2NiC6F5 as a significant Ni(I) byproduct in the activation of C6F6” 2014 Inorg.Chim. Acta , 422, 86-94. Special issue in honour of T. Don Tilley. https://www.sciencedirect.com/science/article/pii/S0020169314004319

 

2013

[42]F Doster, M.E.; Johnson, S. A.* "Carbon-hydrogen Bond Stannylation and Alkylation by Nitrogen-Donor-Supported Nickel Complexes: Intermediates with Ni-Sn Bonds and Catalytic Carbostannylation of Ethylene with Organostannanes" Organometallics, 2013, 32(10), 2944-2951. https://pubs.acs.org/doi/10.1021/om4003889

[41]F Beck, R.; Johnson, S. A.* "Dinuclear Ni(I)-Ni(I) Complexes with Syn-Facial Bridging Ligands from Ni(I) Precursors or Ni(II)/Ni(0) Comproportionation" Organometallics, 2013, 32(10), 2944-2951. https://pubs.acs.org/doi/10.1021/om4001633

[40]F Beck, R.; Shoshani, M.; Krasinckiewicz, J.; Johnson, S. A.* "Synthesis and Chemistry of Bis(triisopropylphosphine)nickel(I) and nickel(0) precursors" Dalton Trans., 2013, 42(5), 14611475. https://pubs.rsc.org/en/content/articlehtml/2013/dt/c2dt32008h

 

2012

[39]C Beck, R.; Shoshani, M.; Johnson, S. A.* "Catalytic H/D Exchange of Unactivated C-H Bonds by A Pentanuclear Electron-Deficient Nickel Hydride Cluster" Angew. Chem. Int. Ed., 2012, 51(47), 11753-11756.

[38] Johnson, Samuel A; Doster, Meghan E.; Matthews, Jacob; Shoshani, Manar; Thibodeau, Michelle; Labadie, Amanda; Hatnean, Jillian A. “Mechanistic Investigation of Carbon-Hydrogen Bond Stannylation: Synthesis and Characterization of Nickel Catalysts”, 2012, Dalton Trans. 41(26), 8135-8143. Invited article for special issue “New Talent: The Americas. https://pubs.rsc.org/en/Content/ArticleLanding/2012/DT/c2dt30310h

37) Beck, Robert; Johnson, Samuel A. “Structural Similarities in Dinuclear, Tetranuclear, and Pentanuclear Nickel Silyl and Silylene Complexes Obtained via Si-H and Si-C Activation", Organometallics 2012, 31(9), 3599-3609. https://pubs.acs.org/doi/10.1021/om300120x

36) Hatnean, Jillian A.; Johnson, Samuel A.*; Experimental Study of the Reaction of a Ni(PEt3)2 Synthon with Polyfluorinated Pyridines: Concerted, Phosphine-Assisted, or Radical C-F Bond Activation Mechanisms?" Organometallics 2012, 31(4), 1361-1373. https://pubs.acs.org/doi/abs/10.1021/om200990g

35) Johnson, Samuel A.; Hatnean, Jillian A.; Doster M.; Editor: Karlin, K.D.. "Functionalization of Fluorinated Aromatics by Nickel-Mediated C-H and C-F Bond Oxidative Addition: Prospects for the Synthesis of Fluorine-Containing Pharmaceuticals" Prog. Inorg. Chem., l 2012, 57 pg 255-352.

 

2011

34) Beck, Robert Johnson, Samuel A.*. “Mechanistic Implications of an asymmetric dinuclear intermediate in catalytic C–C coupling by a dinuclear nickel complex” Chem. Comm. 2011, 47(32), 9233-9235. https://pubs.rsc.org/en/content/articlelanding/2011/cc/c1cc12657a

33) Feng, J.; Green, J.R.; Johnson, S. A.; Wang, Jichang “CO2 production in the bromate-1,4-cyclohexanedione oscillatory reaction” J. Phys. Org. Chem. 2011, 24(6), 507-512.

32) Johnson, Samuel A.*; Mroz, Natalia M.; Valdizon, Rene; Murray, Scott. “Characterization of Intermediates in the C-F Activation of Tetrafluorobenzenes using a Reactive Ni(PEt3)2 Synthon: Combined Computational and Experimental Investigation” Organometallics 2011, 30(3), 441-457. https://pubs.acs.org/doi/10.1021/om100699d

 

2010

31) Doster, Meghan E.; Hatnean, Jillian A.; Jeftic, Tamara; Modi, Sunjay; Johnson, Samuel A.* “Catalytic C-H Bond Stannylation: A New Regioselective Pathway to C-Sn Bonds via C-H Bond Functionalization” J. Am. Chem. Soc. 2010, 132(34), 11923-11925. https://pubs.acs.org/doi/10.1021/ja105588v

30) Hatnean, Jillian A.; Beck, Robert; Borrelli, Jenna D.; Johnson, Samuel A.* “Carbon-Hydrogen Bond Oxidative Addition of Partially Fluorinated Aromatics to a Ni(P-i-Pr3)2 Synthon: The Influence of Steric Bulk on the Thermodynamics and Kinetics of C-H Bond Activation” Organometallics 2010, 29(22), 6077-6091. https://pubs.acs.org/doi/10.1021/om1008499

29) Rossini, Aaron J.; Hung, Ivan; Johnson, Samuel A.; Slebodnick, Carla; Mensch, Mike; Deck, Paul A.; Schurko, Robert W. “Solid-State 91Zr NMR Spectroscopy Studies of Zirconocene Olefin Polymerization Catalyst Precursors” J. Am. Chem. Soc. 2010, 132(51), 18301-18317.

 

2009

28) Meghan E. Doster, and Samuel A. Johnson* “Selective C-F Activation of Tetrafluorobenzenes by Ni(0) with a Nitrogen Donor Analogous to N-Heterocyclic Carbenes” Angew. Chem., Int. Ed. 2009, 48, 2185-2187.https://onlinelibrary.wiley.com/doi/full/10.1002/anie.200806048

27) Johnson, Samuel A.*; Taylor, Erin T.; Cruise, Sean J. "A Combined Experimental and Computational Study of Unexpected C-F Bond Activation Intermediates and Selectivity in the Reaction of Pentafluorobenzene with a (PEt3)2Ni Synthon" Organometallics 2009, 28(13), 3842-3855. https://pubs.acs.org/doi/10.1021/om900176v

26) Miller, Adam D.; Tannaci, John F.; Johnson, Samuel A.; Lee, Hyuk; McBee, Jennifer L.; Tilley, T. Don. Mesityl Alkyne Substituents for Control of Regiochemistry and Reversibility in Zirconocene Couplings: New Synthetic Strategies for Unsymmetrical Zirconacyclopentadienes and Conjugated Polymers. J. Am. Chem. Soc. 2009, 131(13), 4917-4927.

25) Miller, Adam D.; Johnson, Samuel A.; Tupper, Karl A.; McBee, Jennifer L.; Tilley, T. Don. Unsymmetrical Zirconacyclopentadienes from Isolated Zirconacyclopropenes with 1-Alkynylphosphine Ligands. Organometallics 2009, 28(4)

 

2008

24) Johnson, S. A.*; Huff, C. W.; Mustafa, F.; Saliba, M. “Unexpected Intermediates and Products in the C-F Bond Activation of Tetrafluorobenzenes with a Bis(triethylphosphine)Nickel Synthon: Direct Evidence of a Rapid and Reversible C-H Bond Activation by Ni(0)” J. Am. Chem. Soc., 2008, 130(51), 17278-17280. https://pubs.acs.org/doi/abs/10.1021/ja8081395

23) Han, H; Johnson, S. A.* “Bridged Dinuclear Tripodal Tris(amido)phosphine Complexes of Titanium and Zirconium as Diligating Building Blocks for Organometallic Polymers” Eur. J. Inorg. Chem., 2008, 3, 471-482. https://onlinelibrary.wiley.com/doi/full/10.1002/ejic.200701015

22) Ritu Raturi, Julie Lefebvre, Daniel B. Leznoff, Bruce R. McGarvey, and Samuel A. Johnson* “A Phosphine-Mediated Through-Space Exchange Coupling Pathway for Unpaired Electrons in a Heterobimetallic Lanthanide-Transition Metal Complex” Chem.--Eur. J., 2008, 14(2), 721-730. https://onlinelibrary.wiley.com/doi/full/10.1002/chem.200700355

 

2007

21) Alana L. Keen, Meghan Doster, and Samuel A. Johnson* “1,4-Shifts in a Dinuclear Ni(I) Biarylyl Complex: A Mechanistic Study of C-H Bond Activation by Monovalent Nickel” J. Am. Chem. Soc., 2007, 129, 810-819. https://pubs.acs.org/doi/10.1021/ja067112w

 

2006

20) Jillian A. Hatnean, Ritu Raturi, Julie Lefebvre, Daniel B. Leznoff, Gavin Lawes, and Samuel A. Johnson*; “Assembly of Triangular Trimetallic Complexes by Triamidophosphine Ligands: Spin-Frustrated Mn2+ Plaquettes and Diamagnetic Mg2+ Analogues with a Combined Through-Space Through-Bond Pathway for 31P-31P Spin-Spin Coupling”, J. Am. Chem. Soc. 2006, 128, 14992-14999. https://pubs.acs.org/doi/abs/10.1021/ja065597i

19) Han, H; Johnson, S. A.*, "Ligand Design for the Assembly of Polynuclear Complexes: Syntheses and Structures of Trinuclear and Tetranuclear Aluminum Alkyl Complexes Bearing Tripodal Diamidoselenophosphinito Ligands and a Comparison to Related Tripodal Triamidophosphine Complexes" Organometallics 2006, 5594-5602. https://pubs.acs.org/doi/abs/10.1021/om0607447

18) Han, H.; Elsmaili, M.; Johnson*, S. A. "A Diligating Tripodal Amido-Phosphine Ligand: The Effect of a Proximal Antipodal Early Transition Metal on Phosphine Donor Ability in a Building Block for Heterometallic Complexes" Inorg. Chem. 2006, 45, 7435-7445. http://pubs.acs.org/cgi-bin/article.cgi/inocaj/2006/45/i18/pdf/ic060692d.pdf

17) Keen, A. L.; Doster, M.; Han, H.; Johnson, S. A.*, "Facile Assembly of a Cu9 Amido Complex: A New Tripodal Ligand Design that Promotes Transition Metal Cluster Formation" Chem. Commun. 2006, 1221-1223. http://www.rsc.org/ej/CC/2006/b517531c.pdf

16) Keen, A. L.; Johnson, S. A.*, "Ni(0) Catalyzed Isomerization of an Aryne Complex: Formation of a Dinuclear Ni(I) Complex via C-H Rather than C-F Bond Activation" J. Am. Chem. Soc. 2006, 128, 1806-1807. http://pubs.acs.org/cgi-bin/article.cgi/jacsat/2006/128/i06/pdf/ja0572553.pdf

 

1996-2005

15) Studt, Felix; MacKay, Bruce A.; Johnson, Samuel A.; Patrick, Brian O.; Fryzuk, Michael D.; Tuczek, Felix. "Lewis adducts of the side-on end-on dinitrogen-bridged complex [{(NPN)Ta}2(m -H)2(m -h 1:h 2-N2)] with AlMe3, GaMe3, and B(C6F5)3: Synthesis, structure, and spectroscopic properties" Chem.--Eur. J., 2005, 11(2), 604-618.

14) Shaver, Michael P.; Johnson, Samuel A.; Fryzuk, Michael D. "Activation and cleavage of alkynes by the dinuclear tantalum complexes ([NPN]Ta)2(m -H)4 and ([NPN]Ta)2(m -h 1:h 2-N2)(m -H)2 (where NPN = PhP(CH2SiMe2NPh)2)" Can. J. Chem. 2005, 83(6-7), 652-660.

13) MacKay, Bruce A.; Johnson, Samuel A.; Patrick, Brian O.; Fryzuk, Michael D. "Functionalization and cleavage of coordinated dinitrogen via hydroboration using primary and secondary boranes" Can. J. Chem. 2005, 83(4), 315-323.

12) Johnson, S. A.; Liu, F.-Q.; Suh, M. C.; Zürcher, S.; Haufe, M.; Tilley, T. D. “Regioselective Coupling of Pentafluorophenyl Substituted Alkynes: Mechanistic Insight into the Zirconocene Coupling of Alkynes and a Facile Route to Conjugated Polymers Bearing Electron-Withdrawing Pentafluorophenyl Substituents” J. Am. Chem. Soc. 2003, 125, 4199-4211.

11) Fryzuk, M. D.; MacKay, B. A.; Johnson, S. A.; Patrick, B. O. “Hydroboration of Coordinated Dinitrogen: A New Reaction of the N₂ Ligand that Results in Its Functionalization and Cleavage” Angew. Chem. Int. Ed. Engl. 2002, 41, 3709-3712.

10) Fryzuk, M. D.; Johnson, S. A.; Patrick, B. O.; Albinati, A.; Mason, S. A.; Koetzle, T. F. “New Mode of Coordination for the Dinitrogen Ligand: Formation, Bonding, and Reactivity of a Tantalum Complex with a Bridging N₂ Unit That Is Both Side-on and End-on” J. Am. Chem. Soc. 2001, 123, 3960-3973 http://pubs.acs.org/journals/jacsat/article.cgi/jacsat/2001/123/i17/pdf/ja0041371.pdf

9) Fryzuk, M. D.; Johnson, S. A.; Rettig, S. J. “Synthesis of [P₂N₂]Ta(C₂H₄)Et, a Neutral Species with a Beta-Agostic Ethyl Group in Equilibrium with an Alpha-Agostic Ethyl Group in Solution ([P₂N₂] = PhP(CH₂SiMe₂NSiMe₂CH₂)₂PPh)” J. Am. Chem. Soc. 2001, 123, 1602-1612 http://pubs.acs.org/journals/jacsat/article.cgi/jacsat/2001/123/i17/pdf/ja0041371.pdf

8) Fryzuk, M. D.; Johnson, S. A. “The Continuing Story of Dinitrogen Activation” Coord. Chem. Rev. 2000, 200-202, 379-409 http://scholarsportal.info/cgi-bin/sciserv.pl?collection=journals&journal=00108545&issue=v200-202inone

7) Fryzuk, M. D.; Johnson, S. A.; Rettig, S. J. “Synthesis and Bonding in the Diamagnetic Dinuclear Tantalum(IV) Hydride Species ([P₂N₂]Ta)₂(H)₄ and the Paramagnetic Cationic Dinuclear Hydride Species {([P₂N₂]Ta)₂(H)₄}⁺I^- ([P₂N₂] = PhP(CH₂SiMe₂NSiMe₂CH₂)₂PPh): The Reducing Ability of a Metal-Metal Bond” Organometallics 2000, 19, 3931-3941 http://pubs.acs.org/journals/orgnd7/article.cgi/orgnd7/2000/19/i19/pdf/om000359w.pdf

6) Fryzuk, M. D.; Johnson, S. A.; Rettig, S. J. “Synthesis and Structure of the Tantalum Trimethyl Complex [P₂N₂]TaMe₃ and Its Conversion to the Tantalum Methylidene Species [P₂N₂]Ta=CH₂(Me) ([P₂N₂] = PhP(CH₂SiMe₂NSiMe₂CH₂)₂PPh) Organometallics 1999, 18, 4059-4067 http://pubs.acs.org/journals/orgnd7/article.cgi/orgnd7/1999/18/i20/pdf/om990249t.pdf

5) Fryzuk, M. D.; Johnson, S. A.; Rettig, S. J. “New Mode of Coordination for the Dinitrogen Ligand: A Dinuclear Tantalum Complex with a Bridging N₂ Unit That Is Both Side-On and End-On” J. Am. Chem. Soc. 1998, 120, 11024-11025 http://pubs.acs.org/journals/jacsat/article.cgi/jacsat/1998/120/i42/pdf/ja982377z.pdf

4) Fryzuk, M. D.; Giesbrecht, G. R.; Johnson, S. A.; Kickham, J. E.; Love, J. B. “Chelating Amides of Lithium. Synthesis, Structure and Coordination Chemistry” Polyhedron 1998, 17, 947-952 http://scholarsportal.info/cgi-bin/sciserv.pl?collection=journals&journal=02775387&issue=v17i5-6

3) Gillespie, R. J.; Johnson, S. A. “ A Study of Bond Angles and Bond Lengths in Disiloxane and Related Molecules in Terms of the Topology of the Electron Density and its Laplacian” Inorg. Chem. 1997, 36, 3031-3039 http://pubs.acs.org/journals/inocaj/article.cgi/inocaj/1997/36/i14/pdf/ic961381d.pdf

2) Robinson, R. A.; Johnson, S. A.; Tang, T-H; Gillespie, R. J. “Reinterpretation of the Lengths of Bonds to Fluorine in Terms of an Ionic Model: A Criticism of the Schomaker-Stevenson Equation and of the Back-Bonding Model” Inorg. Chem. 1997, 36, 3022-3030 http://pubs.acs.org/journals/inocaj/article.cgi/inocaj/1997/36/i14/pdf/ic961315b.pdf

1) Bader, R. F. W.; Johnson, S. A.; Tang, T-H; Popelier, P. L. A. “ The Electron Pair” J. Phys. Chem. 1996, 100, 15398-15415 http://pubs.acs.org/journals/jpchax/article.cgi/jpchax/1996/100/i38/pdf/jp961297j.pdf