Strukturbericht Structures

Designation Typical example (Mineral name) Crystal system Hermann-Mauguin Pearson s 

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Strukturbericht Structure Symmetry group Pearson E157-82a... 

Per formula by Leonhard Euler F + V - E = 2 Strukturbericht Structure triangle TABLE 5 Classification of Crystals Symmetry group Pearson Standard ASTM E157-82a... 

Throughout this paper we use the Strukturbericht labels T3, DSg,, 44 for Ti, TisSia, and Si phases, respectively. The symmetry of the DSg structure corresponds to the (P6a/mcm) space group. The structure is hexagonal with lattice constants" a = 14.039 a.u. and c=9.712 a.u. The special coordinates (in fractions of the lattice constants) are... 

For known crystal structures reference may be made to the Strukturbericht of P. P. Ewald and C. Hermann in current numbers of Zeits. fur Krist. 

Strukturbericht 1-7. Akademische Verlagsgesellschaft, 1931-1943. Structure Reports 8-58. Kluwer, 1956-1990. Collection of crystal structure data of one year, published annually. 

Fig. 25. Phases observed in electrodeposited Mn-Al alloys. The structural Strukturbericht designations are shown in parenthesis [126-129, 148-151].

Structure trivial names and Strukturbericht symbols As a conclusion to the presentation of the rational nomenclature and symbolism of the intermetallic phases, it must be mentioned that a number of trivial names and symbols have been used and, due to historical reasons, are still in use both as indicators of a single phase in specific systems, or as descriptors of certain structural types or of families of different interrelated structural types. 

The space filling curve characteristic for this structure type is shown in Fig. 4.22. Strukturbericht designation Bl. 

For the layer stacking symbols, the data are reported in comparison with the Li3Bi and NaTl-type structures Strukturbericht designation L2,. 

A ternary ordered derivative variant of this structure is the cF12-AgMgAs type (Strukturbericht designation Clb). 

The ternary variant TiNiSi type is also called E-phase structure. Many ternary compounds belonging to a MeTX formula (Me = rare earth metal, Ti, Hf, V, etc., T = transition metal of the Mn, Fe, Pt groups, X = Si, Ge, Sn, P, etc.) have this structure. Strukturbericht designation C23. 

Strukturbericht designation (tI10-BaAl4 type structure) Dl3. 

Crystal structure nomenclature alphabetically arranged by Strukturbericht designation... 

Crystal structure strukturbericht designation alphabetically arranged by pearson symbol designation... 

B3 is the sphalerite structure (cubic) and B4 the wurtzite structure (hexagonal). The experimental values are from Strukturbericht and Structure Reports, except for BN, which is from R. H. Wentorf, Jr., J. Ckem. Phys. 26, 956 (1957). 

Fiq. 11-20.—The structure of the crystal SiS2. Small circles represent silicon atoms, large circles sulfur atoms (Strukturbericht). 

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