Role of X-Ray Crystallography in Structural Studies of Pyridyl-Ruthenium Complexes

Oyama, Dai

doi:10.5772/29969

Cited by 2 publications

(2 citation statements)

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“…We can use Equation (1) for the calculations, e.g., the energy difference between the extreme members of calcite series. It demands the knowledge of d parameters for nitratine NaNO 3 and gaspeite NiCO 3 : 4.02839Å and 4.34263, respectively, and of sinΘ: 0.19143 and 0.17758.…”

Section: Appendix Amentioning

confidence: 99%

“…Isomorphic compounds, due to their common existence and importance in nature, have attracted a large amount of attention from chemists and mineralogists [1]. The isomorphic chemicals form even the whole series of chemical entities with exchanging some fragments [2], for example, main cations in salts, but without breaking the symmetry of crystallographic cells (diadochy).…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Description of Isomorphism in the Series of Simple Compounds

Kuczumow¹,

Gorzelak

Kosiński

et al. 2023

IJMS

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The introduction of the notion of energy change resulting from the ion exchange in apatites leads to the question: how can some simple isomorphic series be described using the mentioned idea? We concentrated on the simple isomorphic series of compounds: apatite, bioapatite, calcite, aragonite, celestine, K-, Zn- and Cu-Tutton’s salts. It was demonstrated in all the series, except Tutton’s salts, that the change in energy and the change in the crystal cell volume are, in a simple way, dependent on the change in the ionic radii of the introduced ions. The linear relationships between the variations in energy and in the universal crystallographic dimension d were derived from the earlier equations and proven based on available data. In many cases, except the Tutton’s salts, linear dependence was discovered between the change in energy and the sinus of universal angle Θ, corresponding to the change in momentum transfer. In the same cases, linear dependencies were observed between the energy changes and the changes in the volumes of crystallographic cells, and mutually between changes in the crystallographic cell volume V, crystallographic dimension d, and diffraction angle Θ.

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Section: Appendix Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%