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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
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are isostructural. One also speaks of isostructural series, or of isostructural polymorphs or isostructural phase transitions. The term isotypic is synonymous with isostructural.
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is not synonymous: in addition to the same atomic connectivity that characterises isostructural compounds, isomorphous substances crystallise in the same
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structure. The C-H and N-H bond lengths are different and crystal structures are completely different because the ammonium ion only occurs in
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Many minerals are isostructural when they differ only in the nature of a cation.
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IUCR Online
Dictionary of CRYSTALLOGRAPHY, "Isostructural crystals"
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usually have similar chemical structures. For example,
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16:Compounds having similar chemical structure
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156:(3rd. ed.). Oxford: Clarendon Press.
49:definition used by crystallographers is:
100:and has a distorted rock salt structure.
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33:" when used in the relation to
154:Structural Inorganic Chemistry
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203:condensed matter physics
96:is isostructural with β-
328:Materials science stubs
323:Condensed matter stubs
262:-related article is a
205:-related article is a
87:is isostructural with
78:is isostructural with
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58:, sodium nitrate NaNO
107:Compounds which are
62:and iron borate FeBO
152:Wells, A.F (1962).
27:chemical structures
318:Molecular geometry
98:thallium(I) iodide
70:Examples include:
41:and have the same
35:crystal structures
23:chemical compounds
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94:Indium(I) bromide
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80:gold(I) chloride
45:dimensions. The
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313:Crystallography
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76:Gold(I) bromide
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129:tetrahedral
39:space group
31:Isomorphous
307:Categories
139:References
119:, and the
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121:ammonium
85:Borazine
123:ion, NH
113:methane
89:benzene
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258:This
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158:ISBN
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