Database of Zeolite Structures
 

Framework Type USI
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
10
17
27
46
70
94
112
134
181
230
259
4·62·4·62·10·122
T2
4
9
15
26
43
61
86
114
139
174
217
260
4·63·4·63·4·122
T3
4
9
17
26
41
65
85
108
145
181
213
252
4·4·4·6·6·62
T4
4
10
19
32
47
60
84
122
153
177
209
255
4·4·63·10·63·10
T5
4
9
18
29
44
68
92
116
144
173
214
267
4·4·4·6·6·6

aSize and number of shortest 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 T4