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Philip Pattison

Cette personne a quitté l’EPFL

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Publications associées (86)

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Powder diffraction studies on proteins: An overview of data collection approaches

Philip Pattison

Following the seminal work of Von Dreele, high quality powder X-ray diffraction studies on proteins are being established as a valuable complementary technique to single-crystal measurements. Several studies using a variety of experiments approaches have b ...

2007

Photoluminescent Microporous Lanthanide Silicate AV-21 Frameworks

Philip Pattison

The hydrothermal synthesis and structural characterization of the lanthanide silicate system [Na6Ln2Si12O30x H2O] (Ln=La3+, Sm3+, Eu3+, Gd3+, and Tb3+), named AV-21, has been reported. Structural elucidation of the Sm3+ analogue (isomorphous with the Eu3+, ...

2008

Crystal Engineering of Polymeric Structures with Dative Boron–Nitrogen Bonds: Design Criteria and Limitations

Rosario Scopelliti, Kay Severin, Farzaneh Fadaei Tirani, Philip Pattison, Kurt Schenk, Euro Solari, Nicolas Luisier

The combination of tripyridyl ligands and linear diboronate esters results in the formation of oligomeric or polymeric adducts featuring dative boron−nitrogen bonds. The relative orientation of the two different building blocks in the assemblies can be pre ...

2016

Charge ordering transition in GdBaCo2O5: Evidence of reentrant behavior

Philip Pattison

We present a detailed study on the charge ordering transition in a GdBaCo2O5.0 system by combining highresolution synchrotron powder/single-crystal diffraction with electron paramagnetic resonance experiments as a function of temperature. We found a second ...

Amer Physical Soc2013

Dinuclear clathrochelate complexes with pendent cyano groups as metalloligands

Rosario Scopelliti, Kay Severin, Henrik Moodysson Rønnow, Philip Pattison, Ivica Zivkovic, Bálint Náfrádi, Euro Solari, Giacomo Cecot, Mathieu Jérémie Marmier, José Luis Bila

Dinuclear clathrochelate complexes with two, three, four, or five cyano groups in the ligand periphery were prepared following two distinct synthetic strategies: (a) zinc(II)- or cobalt(II)-templated polycondensation reactions of CN-functionalized arylboro ...

2016

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

The influence of the incommensurately modulated structure on the physical properties of Fe1.35Ge

László Forró, Helmuth Berger, Philip Pattison, Alla Arakcheeva, Jacim Jacimovic, Sergiy Katrych, Andrea Pisoni, Krunoslav Prsa

Single crystal growth by chemical vapour transport has resulted samples with Fe1.35Ge stoichiometry. Structural study has shown that the large number of vacancies introduces an incommensuately modulated structure. The electrical resistivity is in the 200 m ...

2019

Application of micro X-ray diffraction to investigate the reaction products formed by the alkali–silica reaction in concrete structures

Gervais Chapuis, Philip Pattison, Alla Arakcheeva

Alkali-silica reaction (ASR) is one of the most important deterioration mechanisms in concrete leading to substantial damages of structures worldwide. Synchrotron-based micro-X-ray diffraction (micro-XRD) was employed to characterize the mineral phases for ...

Pergamon-Elsevier Science Ltd2016

Crystal structures of eight mono-methyl alkanes (C-26-C-32) via single-crystal and powder diffraction and DFT-D optimization

Philip Pattison

The crystal structures of eight mono-methyl alkanes have been determined from single-crystal or high-resolution powder X-ray diffraction using synchrotron radiation. Mono-methyl alkanes can be found on the cuticles of insects and are believed to act as rec ...

Int Union Crystallography2015

Chirok: a post-refinement tool to analyse absolute structure

Philip Pattison

Chirok is software for a post-refinement test of the absolute structure. The software allows a user to calculate a distribution of the measure of chirality based on intensity quotients and linked to the Flack parameter. The distribution is fitted by a set ...

2020

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

The low-temperature structure of nopinone

Philip Pattison

6,6-dimethylbicyclo[3.1.1]heptan-2-one, (1R)-(+)-nopinone, is a liquid at room temperature. It solidifies below 260 K to form an orientationally disordered body-centred cubic phase (a = 7.644 Å at 255 K), which transforms to an ordered structure below 240 ...

2008

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

Influence of the organic cation disorder on photoconductivity in ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4

László Forró, Philip Pattison, Bálint Náfrádi, Alla Arakcheeva, Endre Horvath, Márton Kollár, Pavao Roko Andricevic, Anastasiia Glushkova

We report the synthesis and crystal structure of an organic–inorganic compound, ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4. Synchrotron-based single crystal X-ray diffraction experiments revealed that the pristine and thermally treated crystals diffe ...

2018

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

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

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

The Ligand Aspect Ratio as a Decisive Factor for the Self-Assembly of Coordination Cages

Rosario Scopelliti, Kay Severin, Philip Pattison, Euro Solari, Konstantin Zhurov, Giacomo Cecot, Suzanne Maria Jansze, Matthew David Wise

It is possible to control the geometry and the composition of metallasupramolecular assemblies via the aspect ratio of their ligands. This point is demonstrated for a series of iron- and palladium-based coordination cages. Functionalized clathrochelate com ...

2016

Multimodal Distribution of Quantum Confinement in Ripened CdSe Nanocrystals

Majed Chergui, Philip Pattison, Awos Al Salman

We present three different prepn. methods for CdSe colloidal nanoparticles that, when carried out into the Ostwald ripening regime, lead to the development of complex spectral patterns resulting from the overlap of several distinct components corresponding ...

2008

Synthesis, growth and characterization of 4-bromo-4′-nitrobenzylidene aniline (BNBA): a novel nonlinear optical material with a (3+1)-dimensional incommensurately modulated structure

Gervais Chapuis, Philip Pattison, Alla Arakcheeva

The organic nonlinear optical material of 4-bromo-4'-nitrobenzylidene aniline (BNBA, C13H9BrN2O2), a new derivative of benzylideneaniline family, was synthesized and purified by repeated recrystallization. Single crystals of BNBA were grown in acetone solv ...

Royal Society of Chemistry2013