Sodalites

Blake N P and Metiu H 1995 Efficient adsorption line shape calculations for an electron coupled to many quantum degrees of freedom, applications to an electron solvated in dry sodalites and halo-sodalites J. Chem. Phys. 103 4455... 

Figure C2.12.4. Typical polyhedra found in zeolites (a) sodalite cage found in sodalite, zeolite A or faujasite (b) cancrinite or a-cage found in cancrinite, erionite, offretite or gmelinite (c) the 5-ring polyhedron found in ZSM-5 and ZSM-11 (d) the large cavity of the faujasite stmcture and (e) the a-cage fonning the large cavity in zeolite A.

Figure C2.12.5. Different framework topologies based on the sodalite cage obtained through different connection patterns.

Fig. 4. Three 2eohtes with the same stmctural polyhedron, cubo-octahedrons. (a) Type A, Na 2[( 02) 2( 2)i2] sodalite [1302-90-5]-, (c)...

Sodalite (3Na20 3Al203 6Si02 2NaCl) occurs as a hard, adherent scale on tube surfaces it has a cubic crystal structure. 

Sodalite 3Na2O3Al203-6Si02-2NaCl Hard adherent scale on tube surfaces. 

Average of reported values for zircon, andalusite, silli-manite, staurolite, topaz, titanite, thortveitite, muscovite, apophyllite, hardystonite, analcite, carnegieite, sodalite, danburite, scapolite, and cristobalite mean deviation 0.02 A. 6 Average for BP04 (1.54 A.) and KHjPO, (1.56 A.). For KjSOi and other sulfates. i For Mg(C104)-6H,0. 

Fig. 1. A photograph of a model representing the sodalite structure. The spheres indicate chlorine ions, and the tetrahedra have an oxygen ion at each corner, and a silicon or aluminum ion at the center.

Fig. 2. Amplitude curves for eight orders of reflection from (4 4 o) of sodalite as a function of the sodium parameter u.

In Table IV are given data from oscillation photograph No. 1 of sodalite. The crystal used was a cleaved specimen with a cleaved face (110) 2 mm. square. The incident beam traversed angles between 0 and... 

The same framework exists in hauynite, Na GaAl Si O SOi, and noselite, Na Al Si.O SOfor hauynite has been converted into sodalite... 

There is no close relation between the structure of sodalite and helvite and that of the garnets. 

Using data from rotation and Laue photographs, it is shown that the unit of structure of sodalite, containing < NaiAlzSiiOi2Gl, has a0 = 8.87 A. The lattice is the simple cubic one, Fc the structure closely approximates one based on a body centered lattice, however. The atomic arrangement has... 

Helvite was found to have a unit of structure with a0 = 8.25 A, containing %(Mn, Fe)iBe3Si3012S. The structure is similar to that of sodalite, the parameters having the values u = 0.175, x — 0.113, y = 0.416, z = 0.137. Both structures satisfy the electrostatic valence rule. 

Fig. 9. A stereoview of a sodalite unit containing an octahedral Ag, molecule within a cube of eight Ag ions is shown, using ellipsoids of 20% probability. The ions at Ag(3) occupy 8-ring sites and are not shown (165).

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