Inorganic Crystal Structures
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Last updated 11:19 PM on 5/9/24
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10 Terms
1
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radius ratio < 0.225
coord = 3, trig planar
2
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radius ratio = 0.225 → 0.413
coord = 4, tetrahedral
3
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radius ratio = 0.414 → 0.731
coord = 6, octahedral
4
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radius ratio = 0.732 → 0.999
coord = 8, cubic
5
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radius ratio = 1
coord = 12, close-packed
6
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Rock Salt
CCP Anions, octahedral holes filled, coord = 6
7
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CsCl
Primitive Cubic Array Anions, coord=8
8
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NiAs
HCP (distorted) Anions, Octahedral holes filled, coord=4
9
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Wurztite
HCP anions, ½ tetrahedral holes, coord=4
10
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Zinc Blende (ZnS) also known as Sphalerite Structure
CCP anions, ½ tetrahedral holes filled, coord=4
Note 
Flashcards (35)