Dimerization surface

Fig. X-6. Drop of water on an alkylketene dimer surface (rt) fractal surface D (b) flat surface. (From Ref. 68.)...

There are other interesting surfactant structures including Gemini (dimeric) surfac-... 

In summary, a DNA-supported asymmetric interface located within the DNA-binding domains of these nuclear receptors provides the molecular basis for receptor heterodimers to distinguish between closely related response elements. RXR can provide a repertoire of different dimerization surfaces, each one unique for a specific partner, allowing dimers to form that are adapted to the length of the spacer region in their corresponding response elements. 

M. Tammaro, J. W. Evans. Monomer-dimer surface reaction models Influence of the dimer adsorption mechanism. Phys Rev E 52 2310-2317, 1995. 

E. V. Albano. The critical behavior of dimer-dimer surface reaction models. Monte Carlo and finite-size scaling investigation. J Stat Phys 69 643-666,1992. 

A. Maltz, E. V. Albano. Kinetic phase transitions in dimer-dimer surface reaction models studied by means of mean-field and Monte Carlo methods. Surf Sci 277-A A-42S, 1992. 

Simon, S., Duran, M., Dannenberg, J. J., 1999, Effect of Basis Set Superposition Error on the Water Dimer Surface Calculated at Hartree-Fock, Mpller-Plesset, and Density Functional Theory Levels , J. Phys. Chem. A, 103, 1640. 

Morrow and Sheppard (32) studied the absorption of ethene on their large-particle catalysts at several temperatures up to 473 K. The absorptions at ca. 2885 and 2800 cm , nowadays attributed to ethylidyne, slowly decreased in intensity while an absorption near 2920 cm 1 increased and broadened. A weaker band at ca. 2960 cm 1 was also strengthened. The increased absorptions can probably be attributed to VCH3 and vCH2 modes of a dimerized surface species (see below), a conclusion also supported by an analysis of the spectrum on EUROPT-1 (Fig. 7D) (63). 

For their survey of the water dimer surface. Smith et al. made use of fairly large polarized basis sets of the 6-31 -t-G type. Their lowest energy minimum is in fact the linear type dimer, although the O—H 0 angle deviates some 3° to 4° from 180°. Smith et al. were chiefly concerned with locating transition states pertinent to interchange of various protons in the water dimer. Figure 9... 

Fig. 7. The crystal structure of L7/L12 CTF. The spirals are a -helices and the arrows represent the B-strands. The positions of the amino acid residues are indicated the invariant ones in the five known amino acid sequences are encircled. The vertical line is a crystallographic two-fold axis that might correspond to a molecular two-fold axis relating one CTF domain to another. The residues 77-79 form a fourth strand as a continuation of the B -structure across the dimer surface.

The symmetric dimerized surface is, however, not the lowest energy surface for Si(OOl). At temperatures below 200 K the Si(OOl) surface undergoes a phase transition and exhibits a c(4x2) reconstruction as obvious from the change of LEED pattern shown in Eigure 9.15. New spots appear and indicate a doubling of the size of the primitive unit cell. 

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