Database of Zeolite Structures
 

Framework Type HEI
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
9
20
38
56
77
106
140
189
221
259
329
4·5·4·7·4·82
T2
4
12
24
36
51
80
104
142
181
221
280
334
5·5·5·7·8·8
T3
4
9
18
35
57
78
100
137
182
228
271
325
4·5·4·5·4·82
T4
4
12
22
34
55
77
106
138
178
226
286
320
5·5·5·5·8·8
T5
4
9
17
32
58
82
106
136
182
226
269
318
4·5·4·9·4·9
T6
4
9
18
36
60
80
107
152
177
214
271
319
4·5·4·7·4·9
T7
4
9
20
38
56
76
106
143
184
219
269
326
4·5·4·7·4·82
T8
4
9
18
35
61
83
103
149
184
217
261
316
4·5·4·7·4·9
T9
4
9
18
35
58
77
98
142
184
223
268
328
4·5·4·5·4·82
T10
4
9
17
32
57
84
107
132
185
228
266
318
4·5·4·9·4·9
T11
4
10
21
35
54
88
118
143
180
217
263
310
4·5·4·9·7·9
T12
4
10
19
35
58
84
113
144
183
219
253
314
4·5·4·9·5·7

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