Database of Zeolite Structures
 

Framework Type ETV
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
11
18
33
55
81
100
129
168
214
251
293
4·8·5·6·5·103
T2
4
9
16
32
57
77
99
129
174
204
246
304
4·5·4·5·4·8
T3
4
10
22
37
51
69
107
140
173
201
240
308
4·6·4·8·8·102
T4
4
9
21
38
52
71
98
145
173
199
248
300
4·4·4·8·6·8
T5
4
10
18
32
55
80
100
133
164
206
256
304
4·5·4·8·5·62
T6
4
10
17
31
57
75
102
131
167
207
251
303
4·52·4·8·10·102
T7
4
9
17
30
53
84
101
125
162
215
258
293
4·4·4·5·5·6

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 T2 T3,5,6 T4,7