Database of Zeolite Structures
 

Framework Type FRA
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
10
20
34
52
74
100
130
165
205
0
0
4·4·6·6·6·6
T2
4
10
20
34
52
74
101
133
168
206
0
0
4·4·6·6·6·6
T3
4
10
20
34
52
74
101
133
168
206
0
0
4·6·4·6·6·6
T4
4
10
20
34
53
76
102
132
166
206
0
0
4·4·6·6·6·6
T5
4
10
20
34
52
74
100
130
164
202
0
0
4·4·6·6·6·6
T6
4
10
20
34
54
78
104
134
168
208
0
0
4·4·6·6·6·6

aSize and number of smallest ring on each angle of the T-atom (M. O'Keeffe and S.T. Hyde, Zeolites 19, 370 (1997))
* = no closed ring at this angle
 
Loop configuration of T-atoms:
T1,2,4-6 T3


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