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Philip Pattison

Cette personne n’est plus à l’EPFL

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Publications associées (86)

The luminescence of NaxEu3+(2−x)/3MoO4 scheelites depends on the number of Eu-clusters occurring in their incommensurately modulated structure

Jean-Claude Bünzli, Gervais Chapuis, Alla Arakcheeva, Philip Pattison, Dmitry Logvinovich, Svetlana Eliseeva

Scheelite related compounds with general formula Mn(XO4)m are of interest owing to their optical properties, stability and relatively simple preparation. Eu3+-containing scheelites are considered as red emitting phosphors and the main factors affecting the ...

2012

Ab initio reconstruction of difference densities by charge flipping

Philip Pattison, Thomas Alois Weber

The charge-flipping algorithm in its band-flipping variant is capable of ab initio reconstructions of scattering densities with positive and negative values. It is shown that the method can be applied to reconstructions of difference electron densities of ...

International Union of Crystallography2011

Transformations and structures in the Al–Zn–Mg alloy system: A diffraction study using synchrotron radiation and electron precession

Philip Pattison

The structure of the hardening η′-phase precipitates in Al–Zn–Mg alloys has been investigated by using precession electron diffraction and X-ray synchrotron radiation diffraction. The latter was recorded as a three-dimensional, continuous intensity distrib ...

Elsevier2011

Highly selective additions of hydride and organolithium nucleophiles to helical carbenium ions

Jérôme Lacour, Philip Pattison

Unsymmetrical cationic [4] helicenes react with hydride or organolithium reagents and the two diastereotopic faces can be discriminated with high efficiency (dr up to and higher than 49 : 1) ...

2011

A new polymorph of dicesium tetracyanoplatinate monohydrate with unusual platinum stacking

Philip Pattison, Christine Neuhausen

We wish to report the discovery of a new and unexpected polymorph of dicesium tetracyanoplatinate. Short, linear chains of five platinum atoms (platinum “needles”) appear in a zigzag arrangement, interspersed by isolated tetracyanoplatinate ions. ...

Royal Society of Chemistry2011

Features of the secondary structure of a protein molecule from powder diffraction data

Philip Pattison, Sebastian Basso

Protein powder diffraction is shown to be suitable for obtaining de novo solutions to the phase problem at low resolution via phasing methods such as the isomorphous replacement method. Two heavy-atom derivatives (a gadolinium derivative and a holmium deri ...

International Union of Crystallography2010

Solvent Induced Pseudopolymorphism in a Calixarene-Based Porous Host Framework

Philip Pattison

The self-assembly properties of the proximal p-tert-butylcalix[4]dihydroquinone compound have been studied to investigate the role played by crystallization conditions in driving the formation of a previously reported cubic porous framework. In chloroform ...

American Chemical Society2010

Redetermination of di-$\mu$-hydroxido- bis[diaquachloridodioxidouranium(VI)] from single-crystal synchrotron data

Philip Pattison

The title compound,

(UO_2)_2Cl_2(OH)_2(H_2O)_4

, was obtained unintentionally as the product of an attempted reaction between uranium(VI) oxide dihydrate,

UO_3·2H_2O

, and hydrogen bis(trifluoromethylsulfonyl)imide

(HTf_2N)

, in an experiment to obtain ...

2010

Crystal Structure and Optical and Magnetic Properties of Pr2(MoO4)3

Gervais Chapuis, Alla Arakcheeva, Philip Pattison, Dmitry Logvinovich

Praseodymium molybdate Pr2(MoO4)3 was synthesized using the standard ceramic route. The crystal structure of the material has been successfully solved in superspace group I2/b(Rβ0)00 with lattice constants a = 5.30284(4), b = 5.32699(3), c = 11.7935(1)A° , ...

2010

Crystal structure of the insect neuropeptide proctolin

Philip Pattison

The crystal structure of the neuropeptide proctolin (Arg-Tyr-Leu-Pro-Thr) is reported revealing the solid-state conformation of its molecules and their association in the crystal. ...

Royal Society of Chemistry2010

LiZnNb4O11.5: A novel oxygen deficient compound in the Nb-rich part of the Li2O–ZnO–Nb2O5 system

Gervais Chapuis, Alla Arakcheeva, Philip Pattison

A novel lithium zinc niobium oxide LiZnNb4O11.5 (LZNO) has been found in the Nb-rich part of Li2O–ZnO–Nb2O5 system. LZNO, with an original a-PbO2 related structure, has been synthesized by the routine ceramic technique and characterized by X-ray diffractio ...

2010

trans-Decahydronaphthalene (decalin) from powder diffraction data

Philip Pattison

The title compound, C10H18, a decalin stereoisomer, crystallizes with Z' = 0.5 in the space group P21/n. The trans-decalin molecule is located on an inversion centre with both rings in a chair conformation, making for a quasi-flat overall shape. Despite th ...

2009

Bulk homochirality of a 3-D inorganic framework: ligand control of inorganic network chirality

Philip Pattison

Enantioselective synthesis of a 3-D inorganic net has been achieved leading to metal–organic frameworks built from cobalt-oxide helices in which handedness is controlled by the chirality of the linked ligand. ...

Royal Society of Chemistry2009

A New Family of Bimetallic Framework Materials Showing Reversible Structural Transformations

Philip Pattison

Three new bimetallic framework compounds, namely, (([Cd3(tn)4][Co(CN)6]2)·5H2O)∞ (1), ([Cd(tn)]3[Cr(CN)6]2)∞ (2), and ([Cu2(tn)2][Ru(CN)6]·4H2O)∞ (3), have been prepared in a very simple manner from the ligand 1,3-diaminopropane (tn), the hexacyanometalate ...

2009

3D Imaging of the Fermi Surface by Thermal Diffuse Scattering

Philip Pattison

We use thermal diffuse scattering of x rays to visualize the lens-shaped portions of the Fermi surface in metallic zinc. Our interpretation of the nature of the observed scattered intensity anomalies is supported by the incorporation of inelastic x-ray sca ...

2009

Transformation of a Chiral Nanoporous Bimetallic Cyano-Bridged Framework Triggered by Dehydration/Rehydration

Philip Pattison

The syntheses, crystal structures, and adsorption/desorption properties of two novel chiral three-dimensional cyano-bridged bimetallic assemblies, {[Cu(1R,2Rchxn)2]2[Ru(CN)6]·6H2O}∞ (1) and {[Cu(1R,2Rchxn)2]12[Ru(CN)6]6·26H2O}∞ (2) (where 1R,2Rchxn = trans ...

2009

Structural Aspects of 1,3,5-Benzenetrisamides−A New Family of Nucleating Agents

Philip Pattison

Structural studies of substituted 1,3,5-benzenetrisamides, a new family of highly versatile and efficient nucleating and clarifying agents for polymeric materials, are reported. Subtle details of the molecular structure of these species are shown to have a ...

2009

Pyrrolidinium Ionic Liquid Crystals with Pendant Mesogenic Groups

Philip Pattison

New ionic liquid crystals (including ionic metallomesogens) based on the pyrrolidinium core are presented. N-Methylpyrrolidine was quaternized with different mesogenic groups connected to a flexible, ω-bromosubstituted alkyl spacer. The length of the flexi ...

2009

Validating the model of a (3+1)-dimensional incommensurately modulated structure as generator of a family of compounds for the Eu2(MoO4)3 scheelite structure

Gervais Chapuis, Alla Arakcheeva, Philip Pattison, Jorge Martinez Garcia

The previously proposed model postulating that the incommensurately modulated KNd(MoO

_4

)

_2

structure can act as a generator of the scheelite family members is validated here by refining the crystal structure of europium molybdate, Eu

_2

(MoO

_4

)

_3

. ...

2009

Crystal and magnetic structure of CeVO3

Philip Pattison

The crystal structure and the magnetic ordering pattern of the electrically insulating perovskite CeVO3 was investigated by high-resolution powder X-ray diffraction and single-crystal neutron diffraction. A structural phase transition from an orthorhombic ...

2008

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