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Homodesmic lattices

There are two types of crystals (Kleber 1961) in homodesmic lattices, mainly one type of force is acting between the atoms. Examples are the metals, diamond, and NaCl. Regarding vibrational spectroscopy these crystals act as units, whose vibrational states are properties of the whole crystal. There is no similarity to the spectra of the constituents. [Pg.51]

As shown in Figure 4.63, electronic density can be almost null at a certain distance between two nuclei for the ionic interaction, effectively being equal to zero for van der Waals homodesmic lattice. [Pg.443]

The tetrahedron edges represent the continuous passing from a kind of bond to another, respectively the coexistence inside the same bond (homodesmic lattices) or inside the same structure (heterodesmic lattices) of two types of interactions (Chiriac-Putz-Chiriac, 2005) ... [Pg.448]

The crystalline lattices that present a single t) e of bonding between the particles are called homodesmics, and those that present multiple t) es of bonding are called heterodesmics. [Pg.425]

The van der Waals lattices - homodesmic - are found, as shown, only at inert gases and correspond to the compact structures. Indeed Ne, Ar, Kr, Xe present a compact cubical lattice, see Figure 4.15. [Pg.434]

Regarding the covalent lattices, this group of structures is the last numerous because in this category only homodesmic structures are included, which is reduced as number. [Pg.435]


See other pages where Homodesmic lattices is mentioned: [Pg.449]    [Pg.482]    [Pg.449]    [Pg.482]   
See also in sourсe #XX -- [ Pg.51 ]




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