Hexagonal clusters

Pople s CNDO/2 method and a hexagonal cluster model used in calculations to simulate charge densities Wiberg bond orders of Al - O and Si - O in the six - ring sites and the total energies of the zeolite clusters. 

Hexagonal clusters. For each coat protein there are 10 hexamers and 20 trimers with axial point symmetries 32 and 3, respectively. The lattice parameters a, c of the hexagonal form lattices observed are in integral relation with the hexagonal radius rf of the triacontahedron of the capsid projected along the threefold axis and of the height H of the hexamer, respectively. 

For all hexagonal clusters the form lattices are integral. Of 40 hexameric clusters, 27 form lattices are rationally equivalent with the isometric lattice l-A,, seven with the lattice and six with the lattice /2-A ,g. ... 

Hexagonal clustered plates From methanol, mp 169.0 (IVmin). Sweeter than lactose, but not as sweet as sucrose. Shows mutarotation constant value alter 24 hrs —51,4 ... 

Charges in the close-packed chlorine layers of a-and TiCh balanced hy hexagonal clusters of smaller titanium atoms in spaces between ehlorine layers. To maintain electroneutrality there are rows of empty spaees in the titanium layer with lower eharge density, which simplifies disintegration when milled. The small crystals agglomerate and are more active. 

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