Database of Zeolite Structures
 

Framework Type EEI
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
12
23
41
63
97
133
169
210
262
324
376
5·5·5·62·5·8
T2
4
12
23
39
62
92
129
169
208
263
326
382
5·52·5·6·5·6
T3
4
12
25
41
65
91
127
168
213
267
326
381
5·6·5·6·5·6
T4
4
11
23
45
68
91
121
173
229
264
310
382
4·6·5·5·5·5
T5
4
11
24
40
71
97
127
167
216
269
319
374
4·8·5·5·5·5
T6
4
12
24
41
65
95
133
173
206
259
317
386
5·6·5·6·52·8
T7
4
12
20
35
65
94
129
165
208
254
309
398
5·5·5·5·5·62
T8
4
12
24
36
60
92
129
168
211
252
322
395
5·5·5·5·124·*
T9
4
12
24
39
60
95
132
165
209
261
323
396
5·6·5·6·5·62
T10
4
12
24
40
62
98
130
172
210
250
310
392
5·5·5·5·126·*

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:
T1-3,6-10 T4,5


Copyright © 2017 Structure Commission of the International Zeolite Association (IZA-SC)