Professor John Evans' Outputs (7)

Beyond classical applications of powder diffraction (2004)
Journal Article
Evans, J., & Evans, I. (2004). Beyond classical applications of powder diffraction. Chemical Society Reviews, 33(8), 539-547

This article provides a short tutorial review of how laboratory powder diffraction methods can be used to establish a variety of "non-traditional'' pieces of information about solid state materials-information beyond simple phase identification or st... Read More about Beyond classical applications of powder diffraction.

Transition metal complexes with pyrazole based ligands, part 18: new binuclear Cu(I), Cu(II) and Co(II) complexes with 3,5-dimethyl-l-thiocarboxamide pyrazole: synthesis, structural and magnetic studies (2004)
Journal Article
Evans, I., Howard, J., Howard, L., Evans, J., Jacimovic, Z., Jevtovic, V., & Leovac, V. (2004). Transition metal complexes with pyrazole based ligands, part 18: new binuclear Cu(I), Cu(II) and Co(II) complexes with 3,5-dimethyl-l-thiocarboxamide pyrazole: synthesis, structural and magnetic studies. Inorganica Chimica Acta, 357(15), 4528-4536

Three new binuclear metal complexes of the formulas [(Cu2L2Cl4)-L-II] (1), [(Cu2L2Br2)-L-I] (2) and [(Co2L2Cl4)-L-II] (3) (L = 3,5-dimethyl-1-thiocarboxamide pyrazole) have been synthesized and characterized by chemical analysis, FT-IR spectroscopy,... Read More about Transition metal complexes with pyrazole based ligands, part 18: new binuclear Cu(I), Cu(II) and Co(II) complexes with 3,5-dimethyl-l-thiocarboxamide pyrazole: synthesis, structural and magnetic studies.

The kinetics of low-temperature oxygen migration in ZrWMoO8 (2004)
Journal Article
Allen, S., & Evans, J. (2004). The kinetics of low-temperature oxygen migration in ZrWMoO8. Journal of materials chemistry, 14(2), 151-156

ZrWMoO8 has been shown to undergo a phase transition at remarkably low temperatures in which oxygen atoms become dynamically disordered. The kinetics of this process have been studied by a variety of laboratory-based time and temperature dependent po... Read More about The kinetics of low-temperature oxygen migration in ZrWMoO8.

Structure and phase transition of Sn-substituted Zr(1-x)SnxW2O8 (2004)
Journal Article
De Meyer, C., Bouree, F., Evans, J., De Buysser, K., Bruneel, E., Van Driessche, I., & Hoste, S. (2004). Structure and phase transition of Sn-substituted Zr(1-x)SnxW2O8. Journal of materials chemistry, 14(20), 2988-2994

A conventional solid state reaction between ZrO2, SnO2 and WO3 was used to prepare the negative thermal expansion material Zr(1-x)SnxW2O8. The strong negative thermal expansion over a broad temperature range, which is well known for the pure zirconiu... Read More about Structure and phase transition of Sn-substituted Zr(1-x)SnxW2O8.

Mo2P4O15 - the most complex oxide structure solved by single crystal methods? (2004)
Journal Article
Lister, S., Evans, I., Howard, J., Coelho, A., & Evans, J. (2004). Mo2P4O15 - the most complex oxide structure solved by single crystal methods?. Chemical Communications, 2540-2541. https://doi.org/10.1039/B408413F

We report the crystal structure and phase transitions of Mo2P4O15 which, despite a simple chemical formula, has 441 crystallographically unique atoms in its asymmetric unit and thus has the most complex structure of any extended oxide reported to dat... Read More about Mo2P4O15 - the most complex oxide structure solved by single crystal methods?.

Application of the through-bond correlation NMR experiment to the characterization of crystalline and disordered phosphates (2004)
Journal Article
Fayon, F., King, I., Harris, R., Evans, J., & Massiot, D. (2004). Application of the through-bond correlation NMR experiment to the characterization of crystalline and disordered phosphates. Comptes rendus. Chimie, 7(3-4), 351-361

Through-bond correlation NMR experiments have been used to characterize the structure of MP2O7 crystalline compounds and disordered phosphates. For MP2O7 materials, the refocused INADEQUATE experiment allows discrimination between the possible space... Read More about Application of the through-bond correlation NMR experiment to the characterization of crystalline and disordered phosphates.

Structures and phase transitions of trigonal ZrMo2O8 and HfMo2O8 (2004)
Journal Article
Allen, S., Ward, R., Hampson, M., Gover, R., & Evans, J. (2004). Structures and phase transitions of trigonal ZrMo2O8 and HfMo2O8. Acta crystallographica. Section B, Structural science, 60, 32-40

This paper describes the structures, thermal-expansion properties and phase transitions of the trigonal forms of ZrMo2O8 and HfMo2O8. Both phases adopt a P(3) over bar m structure at room temperature and show positive thermal expansion. Both phases a... Read More about Structures and phase transitions of trigonal ZrMo2O8 and HfMo2O8.