35 datasets found

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...

We request two days on Engin-X to carry out commissioning tests on a pair of new piston-cylinder cells and their associated hydraulic press. Although intended primarily for use...

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...

Jadeite, NaAlSi2O6 is an important mineral in metamorphic rocks and occurs in low as well as high metamorphic grade. Previously we have determined the thermoelastic properties...

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...

This proposal seeks to explore the polymorphism and polymerisation of methacrylic acid using high pressure. We have recently studied acrylic acid at high pressure using single...

It has very recently been shown that Mott-insulators located at the crossover regime closer to the itinerant side, such as RNiO3, undergo a pressure-induced transition into a...

This proposal seeks to investigate the effect of temperature on the structures of thallium and caesium azide. High-resolution neutron powder diffraction data are necessary to...

The aims of this proposal are to explore the high-pressure, high-temperature behaviour of 3 important energetic materials - FOX-7, CL-20, and ADN. These experiments are expected...

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...

We propose an investigation in which the crystal structure of Fe2(CO)9 will be studied as a function of pressure. This compound has previously been investigated by high pressure...

This proposal seeks PEARL beam time to conduct the first high-pressure neutron diffraction study of the monovalent azides XDF2, where X = Na, ND4, Cs and Tl. In so doing, we...

RBaCo4O7 (R = rare earth ion or Y) compositions belong to class of strongly frustrated antiferromagnets. Their crystal structure is build up of alternating Kagome and triangular...

We propose a high-resolution powder neutron diffraction study of the archetypal donor-acceptor complexes (CD3)3N...I2; (CD3)3N...ICl; C5D5N¿ICl; and C5D5N¿IBr. These are the...

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...

This proposal seeks to conduct total-scattering studies on thallium and caesium azides to investigate the effect of temperature on the atomic motions, particularly of the azide...

This proposal seeks to explore the high-pressure structural behaviour of N,N¿-dimethylurea. Two new high-pressure forms have been structurally characterised using x-ray methods,...

The aims of this proposal are to explore the high-pressure, high-temperature behaviour of 2 important energetic materials - 2,4-dinitroanisole (DNAN) and nitrotriazalone (NTO)....

We have shown that the molecular ionic solids MI3 (M=Tl, Cs, Tl, NH4) undergo structural phase transitions below 3.4 GPa at RT to give the same new high pressure phase (HP) with...

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,...