Hexagonal superstructure

If the electrode potential is further reduced to h-350 mV, a hexagonal superstructure with a periodicity of 2.4 0.2 nm is observed. With respect to the interatomic distances in the Au(lll) structure at the surface, this corresponds - within the error limits - to an 8 X 8 superstructure (Figure 6.2-9). 

Fig. 12 Neat melamine Hekates 40, their 1 1 host-guest complexes 41,42 and the 1 3 aggregates of a melamine core with three arms 43 and 44. The disk-shaped aggregates 41 stack in a Colrd phase [99]. The Janus-type Hekate 42 arrange in a Colh phase with hexagonal superstructure of the nanosegregated semi-perfluorinated chains [105]. The supramolecular Hekate discs 43-45 self-assemble by hydrogen bonding of the three arms around a melamine core...

MgCd3 forms a hexagonal superstructure with Mg and Cd in a 1 3 ratio in each layer. The Cd and Mg atoms are hexagonally arranged as shown in Figure 9.3. The notation is 2P4,4 3//4. The structure of CdMg3 is very similar with the ratio reversed. 

Figure 4. Hexagonal superstructures of AB and AB3 alloys (B19, B81 DOi9, and other structures) in three-dimensional presentation and in projection on the equatorial plane. The sites of elementary cell are indicated by dotted lines...

Fig. 12 Structural adaptation to the medium, from weakly to strongly coordinating solvent molecules. The binding of acetonitrile molecules to the Cu(II) centers inside the cavity, as revealed by the solid state structure (bottom left) of the hexagonal structure, drives the formation of a hexagonal superstructure...

Akira T., Takayuki A.and Masakazu I., Non-silica-based mesostructured material. 2 Synthesis of hexagonal superstructure consisting of ll-tungstophosphate anions and dodecyltrimethylammonium cations, Microporous and Mesoporous Materials 21 (1998) pp. 387-393. 

The chromium sulfide preparations obtained via method I have a metallic appearance and become fused at the temperature of preparation. The CrS possesses a hexagonal superstructure of the B 8 t3qie, while at 59.7 atom% of S, a B 8 structure with the axial ratio c/a = 1.62s has been shown toexist. Thq CrgSa obtained method II consists of hexagonal black leaflets, resistant to nonoxidizing acids, easily soluble in HNO3. 

Cg-symmetric rings and the other for single DBAs joining such rings into the perfectly hexagonal superstructure. 

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