Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Trigonal space groups

Formula Chemical class Chemical type Na2Ca(U02)(C03)3-6H20 Crystal system Hydrated normal carbonate Mineral group -. A ,B (X03)p-xH20 where (m+n) p >1 1 Space group Trigonal Rutherfordine R3... [Pg.22]

Formula Chemical class Chemical type (Ba,Sr)5(Ca,Mn)sMg(C03)i3 Crystal system Anhydrous normal carbonate Mineral group AB(X03)3 Space group Trigonal Huntite R3... [Pg.47]

Formula Chemical class Chemical type Mg5Fe(C03)(0H)i3 Crystal system Hydrated carbonate with hydroxyl or halogen Mineral group Miscellaneous Space group Trigonal Hydrotalcite (sjogrenite) P3 or P3... [Pg.56]

Formula Chemical class Chemical type Mg Mn,(C03)(0H)i -4H,0 Hydrated carbonate with hydroxyl or halogen A B (X03)pZ,xH,0 Crystal system Mineral group Space group Trigonal Sjogrenite R3m or R3m... [Pg.80]

Formula Chemical class Chemical type Ca24Mgg[AlSi4(0,0H)i(j2(B03)g(C03)g(H20,Cl) Crystal system Compound carbonate Mineral group Miscellaneous Space group Trigonal, pseudo-cubic R3m... [Pg.98]

Formula Chemical class Chemical type NaBa3(Ca,U)Y(C03) -3I 0 Hydrated normal carbonates A BnlXOjlp xHjO where (m+n) p = 1 1 Crystal system Mineral group Space group Trigonal Mckelveyite P3... [Pg.150]

Formula Chemical class Chemical type Ca(Ce,La)2(C03>3F2 Crystal system Anhydrous carbonate with hydroxyl or halogen Mineral group (AB)(X03)Z, Space group Trigonal Bastnasite R3... [Pg.173]

Figure 34 Solid-state structure of grey Se. (see ref. 96) The structure ofpolymeric S (see refs. 100 and 101) and grey Te (see ref. 95) is similar (Se and Te are trigonal space group P3j21, that of S is monoclinic and slightly distorted). E-E distances 206.6pm (S), 237.5pm (Te). (a) A view that shows the orientation of the chains with respect to the np2-np2 lone pair repulsion. The E-E-E-E torsion angles are 85.3° (S), 100.6° (Se), 100.7° (Te) (b, c) views showing the helical arrangements of the chains. The E-E-E bond angles are 106.0° (S), 103.1° (Se) and 103.1° (Te)... Figure 34 Solid-state structure of grey Se. (see ref. 96) The structure ofpolymeric S (see refs. 100 and 101) and grey Te (see ref. 95) is similar (Se and Te are trigonal space group P3j21, that of S is monoclinic and slightly distorted). E-E distances 206.6pm (S), 237.5pm (Te). (a) A view that shows the orientation of the chains with respect to the np2-np2 lone pair repulsion. The E-E-E-E torsion angles are 85.3° (S), 100.6° (Se), 100.7° (Te) (b, c) views showing the helical arrangements of the chains. The E-E-E bond angles are 106.0° (S), 103.1° (Se) and 103.1° (Te)...
The Ca/Sn-mixed metalated phosphanide-phosphandiide cluster 43 crystallizes in the triclinic space group PI (71). It consists of a trigonal Ca2SnP2 bipyramid, where the phosphandiide P centers serve as ju -bridging centers to the metals. The two phosphanide ligands, however, are. -bridging between two Ca and Ca/Sn centers (Fig. 32). Both Ca ions are octahedrally coordinated. [Pg.280]

Both compounds crystallise in the trigonal space group P 3cl, and this space group remains unchanged upon the Fe(II) spin crossover. The structure of [Fe(btzp)3](Cl04)2 [87] has been solved at 200 K and 100 K, whereas the structure of [Fe(btze)3](BF4)2 [88] has been determined at 296, 200, 150 and 100 K. A projection of the linear chain structure of [Fe(btzp)3](Cl04)2 [87] is displayed in Fig. 17. [Pg.155]

See other pages where Trigonal space groups is mentioned: [Pg.1374]    [Pg.384]    [Pg.99]    [Pg.300]    [Pg.301]    [Pg.376]    [Pg.383]    [Pg.413]    [Pg.35]    [Pg.35]    [Pg.116]    [Pg.149]    [Pg.150]    [Pg.152]    [Pg.1273]    [Pg.151]    [Pg.161]    [Pg.161]    [Pg.15]    [Pg.119]    [Pg.138]    [Pg.71]    [Pg.176]    [Pg.348]    [Pg.400]    [Pg.404]    [Pg.278]    [Pg.313]    [Pg.111]    [Pg.115]    [Pg.118]    [Pg.143]   
See also in sourсe #XX -- [ Pg.1225 ]



SEARCH



Group 230 space groups

Space group

Space groups trigonal/hexagonal

Trigonal and rhombohedral space groups

Trigonal groups

© 2024 chempedia.info