Английская Википедия:Isostructural

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Шаблон:Short description Isostructural chemical compounds have similar chemical structures. "Isomorphous" when used in the relation to crystal structures is not synonymous: in addition to the same atomic connectivity that characterises isostructural compounds, isomorphous substances crystallise in the same space group and have the same unit cell dimensions.[1] The IUCR definition[2] used by crystallographers is: Шаблон:Blockquote

Examples include:

Many minerals are isostructural when they differ only in the nature of a cation.

Compounds which are isoelectronic usually have similar chemical structures. For example, methane, CH4, and the ammonium ion, NH4+, are isoelectric and are isostructural as both have a tetrahedral structure. The C-H and N-H bond lengths are different and crystal structures are completely different because the ammonium ion only occurs in salts.

References

Шаблон:Reflist


Шаблон:CMP-stub Шаблон:Crystallography-stub