Research Guides

Department of Chemistry University of Oxford

Professor Andrew S. Weller

Research in the Weller group is based upon synthetic organometallic chemistry and catalysis, and in particular the generation and stabilisation of transition metal complexes with a low coordination number. These complexes often show very interesting, and novel, structures that display C–H, B–H and C–C bonding modes (via agostic or sigma interactions). Not only are we interested in the fundamentals of synthesis, bonding and structure of these complexes, but we also have a focus on their use and development in challenging catalytic bond transformations, such as C–H, B–H and C–C activation. Collaborations with synthetic organic chemists (Professor Michael Willis, Oxford), computational chemists (Professor Stuart Macgregor, Heriot–Watt), experts in the study of mechanism using kinetics (Professor Guy Lloyd–Jones, Edinburgh) and novel analytical techniques (Professor J. S. McIndoe, University of Victoria), and Inorganic Materials Chemists (Professor Ian Manners, Bristol) also lead to a deeper understanding of structures and reactivity and applications of many of the new complexes and catalytic systems discovered. Please follow the link to our Research Group Webpages for more information on the group, its research and our publications.

2017

F. M. Chadwick, A. I. McKay, A. J. Martinez–Martinez, N. H. Rees, T. Krämer, S. A. Macgregor* and A. S. Weller* Solid–State Molecular Organometallic Chemistry. Single–Crystal to Single–Crystal Reactivity and Catalysis with Light Hydrocarbon Substrates. Chem. Sci. 2017, 8, 6014 

T. J. Coxon, M. Fernández, J. Barwick-Silk, A. I. Mckay, L. E. Britton, A. S. Weller and M. C. Willis* Exploiting Carbonyl Groups to Control Intermolecular Rhodium-Catalyzed Alkene and Alkyne Hydroacylation J. Am. Chem. Soc. 2017, 139, 10142 

A. L. Colebatch, A. I. McKay, N. A. Beattie, S. A. Macgregor* and A. S. Weller* Fluoroarene Complexes with Small Bite Angle Bisphosphines: Routes to Amine−Borane and Aminoborylene Complexes in the press. (Invited article for a special issue) 

X. Wang, T. N. Hooper, A. Kumar, l. K. Priest, Y. Sheng, T. O. M. Samuels, S. Wang, A. W. Robertson, M. Pacios, H. Bhaskaran, A. S. Weller*, J. H. Warner* Oligomeric Aminoborane Precursors for the Chemical Vapour Deposition Growth of Few-Layer Hexagonal Boron Nitride Cryst. Eng. Commun. 2017, 19, 285 

A. I. McKay, T. Krämer, N. H. Rees, A. L. Thompson, K. E. Christensen, S. A. Macgregor,* A. S. Weller,* Formation of a σ-alkane Complex and a Molecular Rearrangement in the Solid-State: [Rh(Cyp2PCH2CH2PCyp2)(η2:η2-C7H12)][BArF 4] Organometallics, 2017, 36, 22. (Invited article for a special issue on hydrocarbon activation)

2016

155.) F. M. Chadwick, T. Krämer, T. Gutmann, N. H. Rees, A. L. Thompson, A. J. Edwards, G. Buntkowsky, S. A. Macgregor,* and A. S. Weller* Selective C-H Activation at a Molecular Rhodium Sigma-Alkane Complex by Solid/Gas Single-Crystal to Single-Crystal H/D Exchange. J. Am. Chem. Soc. 2016, 138, 13369.

A. S. Weller*, F. M. Chadwick and A. I. McKay, Transition Metal Alkane Sigma–Complexes: Synthesis, Characterization and Reactivity, Adv. Organomet. Chem. 2016, 66, 223.

R. Theron, Y. Wu, L. P. E. Yunker, A. V. Hesketh, I. Pernik, A. S.  Weller, J. S. McIndoe*, Simultaneous orthogonal methods for the real-time analysis of catalytic reactions, ACS Cat. 2016, 6, 6911

A. Kumar, N. A. Beattie, S. D. Pike, S. A. Macgregor,* A. S. Weller* The Simplest Amino-borane H2B=NH2 Trapped on a Rhodium Dimer Angew. Chem. Int. Ed. 2016, 55, 6551.

M. W. Drover, E. G. Bowes, L. L. Schafer,*  J. A. Love,* A S. Weller* Phosphoramidate-Supported Cp*Ir(III) Aminoborane H2B=NR2 Complexes: Synthesis, Structure, and Solution Dynamics Chem. Eur. J. 2016, 22,6793.

A.Kumar, I. K. Priest, T.N. Hooper,* and A. S. Weller* Variable Coordination Modes and Catalytic Dehydrogenation of B-Phenyl Amine-Boranes, Dalton Trans 2016, 45, 6183. 

F. M. Chadwick, N. H. Rees, A. S. Weller,* T. Krämer, M. Iannuzzi, S. A. Macgregor,* A Rh–pentane sigma–alkane complex. Characterization in the solid–state by experimental and computational techniques Angew. Chem. Int. Ed. 2016, 55, 3677. 

T. N. Hooper, A. S. Weller*, N. A. Beattie and S. A. Macgregor* Dehydrocoupling of Phosphine-Boranes Using the [RhCp*Me(PMe3)(CH2Cl2)][BArF4] Precatalyst: Stoichiometric and Catalytic Studies Chem. Sci. 2016, 7, 2414 

F. M. Chadwick, N. Olliff, A. S. Weller* A convenient route to a norbornadiene adduct of iridium with chelating phosphines, [Ir(R2PCH2CH2PR2)(NBD)][BArF4] and a comparison of reactivity with H2 in solution and the solid–state. J. Organomet. Chem.  2016, in the press.

A. Grigoropoulos, G. F. S. Whitehead, N. Perret, A. P. Katsoulidis, F. M. Chadwick, R P. Davies, A. Haynes, L. Brammer, A. S. Weller,* J. Xiao, Matthew J. Rosseinsky* Encapsulation of an organometallic cationic catalyst by direct exchange into an anionic MOF Chem. Sci. 2016, 7, 2037. 

A. Kumar, J. S. A. Ishibashi, T. N. Hooper, T. C. Mikulas, D. A. Dixon, S.–Y. Liu* and AS. Weller* The Synthesis, Characterization and Dehydrogenation of Sigma–Complexes of BN–Cyclohexanes Chem. Eur. J. 2016, 22, 310 

 

2015

 M. W. Drover, H. C. Johnson, L. L. Schafer, J. A. Love, and . S. Weller* Reactivity of an Unsaturated Iridium(III) Phosphoramidate Complex, [Cp*Ir{κ2-N,O}][BArF4] 

J. Luo, R. Theron, L. J. Sewell, A. S. Weller, A. G. Oliver, and J. Scott McIndoe* Rhodium-catalyzed selective partial hydrogenation of alkynes Organometallics 2015, 34, 3021 

H. C. Johnson* and Andrew S. Weller* P⎼C Activated Bimetallic Rhodium Xantphos Complexes: Formation and Catalytic Dehydrocoupling of Amine–Boranes Angew. Chem. Int. Ed. 2015, 54, 10173.

A. Prades, M. Fernández, S. D. Pike, M.C. Willis* and A. S. Weller* Well-Defined and Robust Rhodium Catalysts for the Hydroacylation of Terminal and Internal Alkenes Angew. Chem. Int. Ed. 2015, 54, 8520 

G. M. Adams, F. M. Chadwick, S. D. Pike and Andrew S. Weller* A CH2Cl2 Complex of a [Rh(pincer)]+ Cation, Dalton Trans., 2015, 44, 6340  (special issue dedicated to Professor Ken Wade). 

S. D. Pike, T. Krämer N. H. Rees, S. A. Macgregor,* A. S. Weller* Stoichiometric and Catalytic Solid–Gas Reactivity of Rhodium Bis–Phosphine Complexes. Organometallics 2015, 34, 1487.  Selected by the Editors as the Front Cover

 P. Ren, S. D. Pike, I. Pernik, A. S. Weller* and M.C. Willis Rh–POP Pincer Xantphos Complexes for C–S and C–H Activation. Implications for Carbothiolation Catalysis. Organometallics 2015, 34, 711. 

 S. D. Pike, F. M. Chadwick, N. H. Rees, M. P. Scott, A. S. Weller,* T. Krämer, and S. A. Macgregor* Solid–State Synthesis and Characterization of Sigma−Alkane Complexes, [Rh(L2)(η2,η2–C7H12)][BArF4] (L2 = Bidentate Chelating Phosphine). J. Am. Chem. Soc. 2015, 137, 820 Selected as a JACS Editors’ Spotlight Article 

H. C. Johnson, T. N. Hooper and A. S. Weller The Catalytic Dehydrocoupling of Amine– and Phosphine– Boranes, Top. Organomet. Chem. 2015, 49, 153.

S. D. Pike,* I. Pernik, R. Theron, J. S. McIndoe,* A. S. Weller* Relative Binding Affinities of Fluorobenzene Ligands in Cationic Rhodium Bisphosphine η6 Fluorobenzene Complexes Probed Using Collision-Induced Dissociation. J. Organometallic Chem. 2015, 784, 75.(Invited Contribution).

S. D. Pike* and A. S. Weller* Organometallic Synthesis, Reactivity and Catalysis in the Solid–State Using Well–Defined Single Site Species, Phil. Trans. R. Soc. A, 2015 373 20140187 (Invited contribution).