0000000001305069
AUTHOR
Richard E. P. Winpenny
showing 12 related works from this author
Brief encounter at the molecular level: what muons tell us about molecule-based magnets
2005
Abstract Spin-polarized muons can be implanted in various molecular magnetic materials in order to measure static and dynamic magnetic field distributions at a local level. The positively-charged muon is an unstable, radioactive particle which has spin–1/2, a lifetime of 2.2 μ S , about one-ninth of the proton mass and a magnetic moment of approximately 1/200 μ B . Both pulsed and continuous beams of muons can be produced with almost 100% spin polarization and significant intensity at various accelerator facilities. The subsequent decay of the muon into a positron allows the extraction of the muon-spin autocorrelation function which can be related to the magnetic field distribution inside a…
Formation of an interlocked double-chain from an organic-inorganic [2]rotaxane.
2019
Here we show that a structure containing a polymeric interlocking daisy chain is obtained from the reaction of an inorganic–organic [2]rotaxane [HB{CrIII7NiII(μ-F)8(O2CtBu)16}], where B is an organic thread terminated with a bi-pyridyl unit, with an oxo-centered metal carboxylate triangle [FeIII2CoII(μ3-O)(O2CtBu)6(HO2CtBu)3].
Self-assembly of catalytically-active supramolecular coordination compounds within metal-organic frameworks
2019
[EN] Supramolecular coordination compounds (SCCs) represent the power of coordination chemistry methodologies to self-assemble discrete architectures with targeted properties. SCCs are generally synthesized in solution, with isolated fully coordinated metal atoms as structural nodes, thus severely limited as metal-based catalysts. Metal-organic frameworks (MOFs) show unique features to act as chemical nanoreactors for the in situ synthesis and stabilization of otherwise not accessible functional species. Here, we present the self-assembly of Pd-II SCCs within the confined space of a pre-formed MOF (SCCs@MOF) and its post-assembly metalation to give a Pd-II-Au-III supra molecular assembly, c…
A [13]rotaxane assembled via a palladium molecular capsule
2019
Molecules that are the size of small proteins are difficult to make. The most frequently examined route is via self-assembly, and one particular approach involves molecular nanocapsules, where ligands are designed that will enforce the formation of specific polyhedra of metals within the core of the structure. Here we show that this approach can be combined with mechanically interlocking molecules to produce nanocapsules that are decorated on their exterior. This could be a general route to very large molecules, and is exemplified here by the synthesis and structural characterization of a [13]rotaxane, containing 150 metal centres. Small angle X-ray scattering combined with atomistic molecu…
Studies of a molecular hourglass: synthesis and magnetic characterisation of a cyclic dodecanuclear {Cr10Cu2} complex.
2006
The synthesis, structure, EPR, and magnetic studies of two dodecanuclear heterometallic cyclic clusters are reported. The compounds have the general formula [R(2)NH(2)](2)[Cr(10)Cu(2)F(14)(O(2)CCMe(3))(22)] (R=Me, 1 or iPr, 2). Both structures contain an array of metal centers which describe an approximate "hourglass", with an ammonium cation in the center of each half of the figure. The chromium sites are all six-coordinate, with the two copper sites five-coordinate. The majority of metal-metal edges are bridged by a single fluoride and two pivalate ligands, while two Cr--Cu edges are bridged by a single fluoride and a single pivalate. Magnetic studies show that 1 and 2 exhibit similar (bu…
A family of heterometallic wheels containing potentially fourteen hundred siblings
2005
The synthesis and structure of new heterometallic wheels are reported, with preliminary studies of selected compounds.
CCDC 1892911: Experimental Crystal Structure Determination
2019
Related Article: Rosa Adam, Marta Mon, Rossella Greco, Lucas H. G. Kalinke, Alejandro Vidal-Moya, Antonio Fernandez, Richard E. P. Winpenny, Antonio Dom��nech-Carb��, Antonio Leyva-P��rez, Donatella Armentano, Emilio Pardo, Jes��s Ferrando-Soria|2019|J.Am.Chem.Soc.|141|10350|doi:10.1021/jacs.9b03914
CCDC 1892914: Experimental Crystal Structure Determination
2019
Related Article: Rosa Adam, Marta Mon, Rossella Greco, Lucas H. G. Kalinke, Alejandro Vidal-Moya, Antonio Fernandez, Richard E. P. Winpenny, Antonio Dom��nech-Carb��, Antonio Leyva-P��rez, Donatella Armentano, Emilio Pardo, Jes��s Ferrando-Soria|2019|J.Am.Chem.Soc.|141|10350|doi:10.1021/jacs.9b03914
CCDC 1572780: Experimental Crystal Structure Determination
2019
Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C
CCDC 1860091: Experimental Crystal Structure Determination
2019
Related Article: Jesus Ferrando-Soria, Antonio Fernandez, Deepak Asthana, Selina Nawaz, Iñigo J. Vitorica-Yrezabal, George F. S. Whitehead, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Neil D. Burton, Richard E. P. Winpenny |2019|Nat.Commun.|10|3720|doi:10.1038/s41467-019-11635-6
CCDC 1572781: Experimental Crystal Structure Determination
2019
Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C
CCDC 1892912: Experimental Crystal Structure Determination
2019
Related Article: Rosa Adam, Marta Mon, Rossella Greco, Lucas H. G. Kalinke, Alejandro Vidal-Moya, Antonio Fernandez, Richard E. P. Winpenny, Antonio Dom��nech-Carb��, Antonio Leyva-P��rez, Donatella Armentano, Emilio Pardo, Jes��s Ferrando-Soria|2019|J.Am.Chem.Soc.|141|10350|doi:10.1021/jacs.9b03914