Database of Zeolite Structures
 

Framework Type -IRT
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
8
14
23
32
49
67
85
103
114
136
187
4·5·4·6·4·142
T2
4
12
17
23
40
53
62
75
98
120
143
178
5·6·5·6·62·0
T3
4
9
18
30
39
45
55
73
99
127
150
176
4·62·4·62·4·12
T4
4
9
15
22
33
49
72
86
95
114
145
191
4·5·4·6·4·62
T5
4
9
19
33
41
44
56
83
114
136
156
187
4·6·4·62·4·124
T6
4
8
13
20
29
48
67
78
87
110
143
169
4·5·4·62·4·142
T7
4
12
17
23
37
48
61
83
102
121
149
188
5·6·5·122·6·62
T8
3
5
10
19
29
39
63
83
91
106
130
164
4·0·4·0·4·0
T9
4
9
17
27
35
47
69
90
101
110
133
175
4·5·4·62·4·12
T10
4
11
22
26
27
48
77
82
85
122
173
193
4·52·6·62·6·62
T11
4
11
20
24
29
47
66
75
84
112
156
185
4·52·62·62·62·6

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:


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