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Total scattering study of the orientational phase transition in para-terphenyl
There is currently a resurgence of interest in phase transitions in orientationally disordered molecular crystals. This is partly driven by the fact that new experimental and... -
How molecular solids prepare for phase transitions: The phase transition in o...
Oxalyl chloride (mpt. 260 K), forms an ordered phase at low temperature, but a disordered phase between 250 K and the melting point. In previous beamtime we aimed to carry out... -
L-Alanine above 10 GPa
Recently we studied L-alanine to 9.85 GPa. This is the highest pressure for which structural data are available for any organic system larger than methane. The results enabled... -
How molecular solids prepare for phase transitions: The phase transition in o...
Oxalyl chloride, which is a liquid at RT, forms a disordered phase (I) on cooling to 260 K. This phase is unstable with respect to an ordered phase (II) below 250 K, but in... -
The Effect of Pressure on the Crystal Structure of Serine Hydrate
Serine monohydrate undergoes a phase transition at 5.2 GPa which involves reorientation of water molecules. It appears that this disrupts H-bonding elsewhere in the crystal,... -
An INS Study of the Effect of Pressure on the Crystal Structure Titanium Tetr...
At ambient pressure TiCl4 forms a molecular solid consisting of isolated TiCl4 molecules (phase-I). At 0.5 GPa this structure undergoes a transition to phase-II, which is... -
Pressure-Induced Linkage Isomerism in a Prussian Blue Analogue
The Prussian blue analogue K0.4Fe4[Cr(CN)6]2.8.16H2O (1) is a soft ferromagnet at ambient pressure with a critical temperature (Tc) of 19 K. Bridging cyanides are oriented in... -
Phase Behaviour in Pyrazine and Tetramethylpyrazine.
Pyrazine-I is stable < 302 K, phase II exists from 302-310 K, and phase III from 310-324 K. The known phase-I forms an ordered structure. It is thought that structures of... -
The crystal structure of a Co(II) cubane single-molecule magnet
Single molecule magnetism is a low temperature phenomenon. Even though there have been thousands of papers published in the area, there are no structural data at all for any... -
Copy of: The Effect of Pressure on the Crystal Structure Titanium Tetrachloride
At ambient pressure and temperature TiCl4 is a fuming yellow liquid. On cooling it forma a solid composed of essentially isolated tetrahedral molecules; the same structure is... -
An INS Study of the Effect of Pressure on the Crystal Structure Titanium Tetr...
TiCl4 forms a molecular structure containing isolated tetrahedral molecules on cooling to 248 K. The freezing pressure of TiCl4 is 0.05 GPa (500 atm). Single crystal growth... -
The chemisorption of hydrogen over a Raney cobalt catalyst: An INS investigation
Building on a successful programme investigating aspects of iron based Fischer-Tropsch synthesis (FTS) catalysts, it is opportune to extend that work to include Co FTS...
