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Philip Pattison

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Related publications (86)

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Average crystal structure(s) of the embedded meta stable eta '-phase in the Al-Mg-Zn system

Philip Pattison

Meta stable embedded nano-sized -particles within a single grain extracted from an alloy having the nominal composition have been examined with X-ray diffraction. By applying the orientational and metric relationships that exist between the hexagonal unit ...

Taylor & Francis Ltd2014

Structural disorder versus chiral magnetism in

Philip Pattison

The crystal structure of a disordered form of Cr1/3NbS2 has been characterized using diffraction and inelastic scattering of synchrotron radiation. In contrast to the previously reported symmetry (P6322), the crystal can be ...

2015

Intrachain antiferromagnetic exchange in a 1D branched-chain built of two different copper(II) centres interlinked by end-on azido and phenoxo bridges: electron density map, electrochemical and magnetic properties

Henrik Moodysson Rønnow, Kurt Schenk, Philip Pattison, Krunoslav Prsa, Noore Elahi Shaik, Arash Alahgholipour Omrani

A 1D, end-on azido- and phenoxo-bridged, coordination polymer, Cu-2(mu-NAPPR)(mu(1,1)-N-3)(2) (1), (NAPPR(2-) = 1,3-bis(naphthylideneimino) propane dianion), was synthesized and characterized. The 1D branched-chain is built of two types of slightly di ...

2015

Spin and orbital disordering by hole doping in Pr1-xCaxVO3

Philip Pattison

High-resolution powder x-ray diffraction and single-crystal neutron diffraction were used to investigate the crystal structure and magnetic ordering of the compound Pr1-xCax VO3 (0

Amer Physical Soc2016

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

Gervais Chapuis, Philip Pattison, Alla Arakcheeva

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

Polarization-dependence of anomalous scattering in brominated DNA and RNA molecules, and importance of crystal orientation in single- and multiple-wavelength anomalous diffraction phasing

Philip Pattison, Marc Fleurant

In this paper the anisotropy of anomalous scattering at the Br K-absorption edge in brominated nucleotides is investigated, and it is shown that this effect can give rise to a marked directional dependence of the anomalous signal strength in X-ray diffract ...

2007

Metergoline II: structure solution from powder diffraction data with preferred orientation and from microcrystal

Philip Pattison

Metergoline is a dopamine agonist and serotonin antagonist used both in human and veterinary medicine. In addition to the previously known crystalline form, a new polymorph, which crystallizes from aqueous solution, was found. Since it was initially imposs ...

2008

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba2Fe1.12Os0.88O6

Philip Pattison

Double perovskite oxides A(2)BB'O-6 combining 3d and 4d or 5d transition metal ions at the B and B' sites feature a variety of magnetic and magneto-electric properties. Targeting Ba2FeOsO6, we synthesized powder samples of nonstoichiometric Ba2Fe1.12Os0.88 ...

American Chemical Society2017

Pressure-Induced Chemical Decomposition and Structural Changes of Boric Acid

Philip Pattison

A combined synchrotron X-ray diffraction, Raman scattering, and infrared spectroscopy study of the pressure-induced changes in H3BO3 to 10 GPa revealed a new high-pressure phase transition between 1 and 2 GPa followed by chemical decomposition into cubic H ...

2006

The alpha(2)-polymorph of salicylideneaniline

Gervais Chapuis, Philip Pattison

N-Salicylideneaniline (SA), C13H11NO, belongs to the large family of aromatic Schiff bases. It is of particular importance owing to its reversible photoreactivity. SA forms two photochromic polymorphs, both with two non-coplanar benzene rings. In addition, ...

2005

X-ray micro-diffraction studies of heterogeneous interfaces between cementitious materials and geological formations

Philip Pattison

In the present study the challenge of analyzing complex micro X-ray diffraction (microXRD) patterns from cement clay interfaces has been addressed. In order to extract the maximum information concerning both the spatial distribution and the crystal structu ...

Pergamon-Elsevier Science Ltd2014

Analysing Friedel averages and differences

Philip Pattison

Various practical applications of the average (A) and difference (D) of Friedel opposites are described. Techniques based on the resonant-scattering contribution to Friedel differences are applied to see whether a crystal is centrosymmetric or not, and to ...

International Union of Crystallography2012

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

Zero-dimensional hybrid iodobismuthate derivatives: from structure study to photovoltaic application

Mohammad Khaja Nazeeruddin, Farzaneh Fadaei Tirani, Yi Zhang, Philip Pattison, Peng Gao, Kurt Schenk, Peng Gao

The quest for lead-free light-absorbing perovskite materials has long been the target of researchers to make the 'star' material friendly to the commercial market. After a summary of different lead-free solar absorbers, we demonstrate a zero-dimensional io ...

ROYAL SOC CHEMISTRY2020

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

X-ray absorption, refraction and resonant scattering tensors in selenated protein crystals: implications for data collection strategies in macromolecular crystallography

Philip Pattison

Polarized fluorescence spectra were recorded in the vicinity of the Se and Br K edges on crystals of the selenated protein aldose reductase in complex with a brominated inhibitor molecule. The X-ray absorption, refraction and resonant scattering tensors as ...

2005

Carboxylic Acid Functionalized Clathrochelate Complexes: Large, Robust, and Easy-to-Access Metalloligands

Rosario Scopelliti, Kay Severin, Philip Pattison, Kurt Schenk, Euro Solari, Mathieu Jérémie Marmier, Matthew David Wise

Polycarboxylate ligands are among the most important building blocks for the synthesis of metal–organic frameworks (MOFs). The ability to access these ligands in an efficient way is of key importance for future applications of MOFs. Here, we demonstrate th ...

2016

Exploiting X-ray induced anisotropic lattice changes to improve intensity extraction in protein powder diffraction: Application to heavy atom detection

Philip Pattison, Marc Fleurant, Annasara Dahlström

X-ray induced anisotropic variations of cell parameters in porcine pancreatic elastase (PPE) were used in a multi-Pawley refinement in order to improve the deconvolution of overlapping peaks occurring in the high-angle region of the powder pattern. The ben ...

2007

KEu(MoO4)(2): Polymorphism, Structures, and Luminescent Properties

Philip Pattison, Alla Arakcheeva

In this paper, with the example of two different polymorphs of KEu(MoO4)(2), the influence of the ordering of the A-cations on the luminescent properties in scheelite related compounds (A',A '') (B',B '')O-4 is investigated. The polymorphs were synthe ...

American Chemical Society2015

Serial snapshot crystallography for materials science with SwissFEL

Philip Pattison

New opportunities for studying (sub) microcrystalline materials with small unit cells, both organic and inorganic, will open up when the X-ray free electron laser (XFEL) presently being constructed in Switzerland (SwissFEL) comes online in 2017. Our synchr ...

Int Union Crystallography2015