Database of Zeolite Structures
 

Framework Type PTO
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
12
24
38
61
89
130
159
199
251
312
377
5·6·5·7·5·9
T2
4
11
22
38
60
91
120
159
199
248
305
371
4·10·5·5·5·6
T3
4
11
22
37
62
89
125
156
201
244
306
368
4·6·5·5·5·6
T4
4
11
24
38
63
89
122
159
200
253
302
355
4·6·5·5·6·9
T5
4
11
22
39
62
90
118
154
210
251
297
363
4·5·5·5·6·10
T6
4
12
21
37
61
94
119
158
200
251
313
357
5·5·5·52·6·62
T7
4
12
22
38
63
93
121
157
209
258
306
352
5·5·5·62·5·9
T8
4
11
21
36
62
90
124
157
200
251
306
355
4·5·5·5·5·7
T9
4
11
22
40
62
90
121
164
202
247
304
366
4·9·5·5·5·6
T10
4
10
20
38
66
86
116
157
208
258
291
350
4·5·4·9·5·5
T11
4
10
21
39
62
93
116
153
211
254
296
354
4·5·4·9·5·5
T12
4
12
23
39
57
91
130
159
193
250
307
369
5·52·5·6·9·11

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:
T1,6,7,12 T2-5,8,9 T10,11


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