Database of Zeolite Structures
 

Framework Type POR
Coordination Sequences and Vertex Symbols
T-atom Name
N1 to N10 (or 12)
Vertex Symbola
T1
4
9
18
35
57
76
96
128
172
216
253
293
4·4·4·6·8·82
T2
4
11
22
32
49
77
110
140
163
199
253
312
4·82·62·82·62·8
T3
4
9
19
35
53
74
98
131
178
221
252
290
4·4·4·82·6·8
T4
4
9
18
34
57
81
101
127
168
213
256
303
4·6·4·63·4·83

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 T2 T4