CO
TAB. 2.4 - Principales structures compactes.
Formule
MX
MX 2
(M 2 0)
M 2 X 3
ABO 3
ABO 3
AB 2 O 4
A 2 BO 4
coordination
anion :
cation
6:6
4:4
8:4
(4:8)
6 :3
6:4
id
0
12 : 6 : 6
4:6:4
6:4:4
types et
nombre de sites
occupes
sites O
tous occupes
1/2 sites T
sites T
tous occupes
1/2 sites O
2/3 sites O
1/4 sites O
(at.B)
1/8 sites T (B)
1/2 sites O (A)
empilements CFC
NaCl, LiF, MgO, VO,
MnS, TiC
ZnS(blende) a-Agl,
BeO, SiC
CaF 2 , Th0 2 , Zr0 2 ,
U0 2
CeO 2 , HfO 2 , PuO 2
CdCl 2
Ti0 2 VO 2 , NbO 2 ,
'Pb0 2
SrTiO 3 , BaTiO 3 ,
CaTiO 3
MgAl 2 O 4 , FeAl 2 O 4
MgFe 2 0 4
empilements HC
NiAs, FeS, NiS, CoSe
ZnS(wurtzite), ZnO,
0-AgI
CdI 2 , TiS 2
A1 2 0 3 ,
V 2 0 3 , Ti 2 0 3 , Cr 2 0 3
FeTiO 3 , NiTiO 3 ,
CoTiO 3
Mg 2 SiO 4 , Fe 2 SiO 4
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