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Professor Ivana Evans' Outputs (11)

A study of the thermal and light induced spin transition in FeL2 (BF4)(2) and FeL2 (ClO4)(2) L=2,6-di(3-methylpyrazol-1-yl)pyrazine (2004)
Journal Article
Money, V., Elhaik, J., Evans, I., Halcrow, M., & Howard, J. (2004). A study of the thermal and light induced spin transition in FeL2 (BF4)(2) and FeL2 (ClO4)(2) L=2,6-di(3-methylpyrazol-1-yl)pyrazine. Dalton Transactions, 43(1), 65-69. https://doi.org/10.1039/b311262b

The spin crossover compounds [FeL2](BF4)(2), L = 2,6-di(3-methylpyrazol-1-yl) pyrazine and [FeL2](ClO4)(2) have very unusual two stage spin transitions which are initially steep and then become more gradual. A detailed variable temperature single cry... Read More about A study of the thermal and light induced spin transition in FeL2 (BF4)(2) and FeL2 (ClO4)(2) L=2,6-di(3-methylpyrazol-1-yl)pyrazine.

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.

Transition metal complexes with pyrazole-based ligands. XIX. Diaquabis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-kappa N-2,N `)metal(II) dinitrate, with metal = Co and Ni (2004)
Journal Article
Jacimovic, Z., Leovac, V., Szecsenyi, K., Howard, J., & Evans, I. (2004). Transition metal complexes with pyrazole-based ligands. XIX. Diaquabis(3,5-dimethyl-1H-pyrazole-1-carboxamidine-kappa N-2,N `)metal(II) dinitrate, with metal = Co and Ni. Acta crystallographica. Section C, Crystal structure communications, 60(10), M467-M470. https://doi.org/10.1107/s0108270104017433

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?.

Isogentisin (1,3-dihydroxy-7-methoxyxanthone) (2004)
Journal Article
Evans, I., Howard, J., Savikin-Fodulovic, K., & Menkovic, N. (2004). Isogentisin (1,3-dihydroxy-7-methoxyxanthone). Acta crystallographica. Section B, Structural science, 60, O1557-O1559

The crystal structure of isogentisin, C14H10O5, a natural product isolated from Gentiana lutea, has been determined. The phenolic ring system is essentially planar and the displacement of the methoxy substituent from the mean molecular plane is very... Read More about Isogentisin (1,3-dihydroxy-7-methoxyxanthone).

Variable temperature studies of a polymorphic system comprising two pairs of enantiotropically related forms: S,S -ethambutol dihydrochloride (2004)
Journal Article
Rubin-Preminger, J., Bernstein, J., Harris, R., Evans, I., & Ghi, P. (2004). Variable temperature studies of a polymorphic system comprising two pairs of enantiotropically related forms: S,S -ethambutol dihydrochloride. Crystal Growth and Design, 4(3), 431-439. https://doi.org/10.1021/cg0341959

Of the four known polymorphs of [S,S] -ethambutol dihydrochloride, two transform in an enantiotropic single-crystal-to-single-crystaI phase transformation from Form II to Form I on heating. The crystal structures of these two forms have been solved a... Read More about Variable temperature studies of a polymorphic system comprising two pairs of enantiotropically related forms: S,S -ethambutol dihydrochloride.

Synthesis, characterization and crystal structure of a novel Ni(II) complex, Ni(L-H)(2) (L=3,5-dimethyl-1-thiocarboxamidopyrazole) (2004)
Journal Article
Evans, I., Howard, J., Szecsenyi, K., Leovac, V., & Jacimovic, Z. (2004). Synthesis, characterization and crystal structure of a novel Ni(II) complex, Ni(L-H)(2) (L=3,5-dimethyl-1-thiocarboxamidopyrazole). Journal of Coordination Chemistry, 57(6), 469-476

A new complex, Ni(L-H)(2), L = 3,5-dimethyl-1-thiocarboxamidopyrazole, has been synthesized and characterized by IR spectroscopy, magnetic and electrical measurements. Its crystal structure was solved from powder X-ray diffraction data. The compound... Read More about Synthesis, characterization and crystal structure of a novel Ni(II) complex, Ni(L-H)(2) (L=3,5-dimethyl-1-thiocarboxamidopyrazole).

An X-ray powder diffraction study of the spin-crossover transition and structure of bis (2,6-dipyrazol-1-ylpyrazine)iron(II) perchlorate (2004)
Journal Article
Money, V., Evans, I., Elhaik, J., Halcrow, M., & Howard, J. (2004). An X-ray powder diffraction study of the spin-crossover transition and structure of bis (2,6-dipyrazol-1-ylpyrazine)iron(II) perchlorate. Acta crystallographica. Section B, Structural science, 60, 41-45

The crystal structure of the iron(II) spin-crossover compound [Fe(C10H8N6)(2)](ClO4)(2) in the high-spin state has been solved from powder X-ray diffraction data using the DASH program and refined using Rietveld refinement. The thermal spin transitio... Read More about An X-ray powder diffraction study of the spin-crossover transition and structure of bis (2,6-dipyrazol-1-ylpyrazine)iron(II) perchlorate.