Difference between revisions of "Isostructural crystals"
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== Definition == | == Definition == | ||
| − | Two crystals are said to be ''isostructural'' if they have the same structure, but not necessarily the same cell dimensions nor the same chemical composition, and with a 'comparable' variability in the atomic coordinates to that of the cell dimensions and chemical composition. For instance, calcite CaCO<sub>3</sub>, sodium nitrate NaNO<sub>3</sub> and iron borate FeBO<sub>3</sub> are isostructural. One also | + | Two crystals are said to be ''isostructural'' if they have the same structure, but not necessarily the same cell dimensions nor the same chemical composition, and with a 'comparable' variability in the atomic coordinates to that of the cell dimensions and chemical composition. For instance, calcite CaCO<sub>3</sub>, sodium nitrate NaNO<sub>3</sub> and iron borate FeBO<sub>3</sub> are isostructural. One also speaks of ''isostructural series'', or of ''isostructural |
polymorphs'' or ''isostructural phase transitions. | polymorphs'' or ''isostructural phase transitions. | ||
Revision as of 09:50, 25 May 2007
Isostructural crystals
Other languages
Cristaux isotructuraux (Fr). Cristalli isostrutturali (It)
Definition
Two crystals are said to be isostructural if they have the same structure, but not necessarily the same cell dimensions nor the same chemical composition, and with a 'comparable' variability in the atomic coordinates to that of the cell dimensions and chemical composition. For instance, calcite CaCO3, sodium nitrate NaNO3 and iron borate FeBO3 are isostructural. One also speaks of isostructural series, or of isostructural polymorphs or isostructural phase transitions.
See also
Section 3.3 of International Tables of Crystallography, Volume D