Filled structure

Wang, J.L., Jellinek, J., Zhao, J., Chen, Z.F., King, R.B. and Schleyer, P.V. (2005) Hollow Cages versus Space-Filling Structures for Medium-Sized Gold Clusters The Spherical Aromaticity of the Au o Cage. The Journal of Physical Chemistry A, 109, 9265-9269. 

The second method referred to as the direct covalent bond formation method , produces semi-controlled, partial shell filled structures. It involves the reaction of a limited amount of nucleophilic dendrimer core reagent with an excess of... 

A two-dimensional space-filling structure is obviously present but is not easily discussed in terms of "strands and "crosslinks." Continued on next page. 

FIGURE 5.3 Space-filling structure of a portion of a linear amorphous polyethylene (PE) region. 

It should be noted that for RNi2B2C the counterpart without carbon does not exist. Cobalt is, so far, the only transition metal for which both the filled (with C) and the non-filled structures could be prepared (see Table 4). The examples of ferromagnetic GdCo2B2 and antiferromagnetic GdCo2B2C show that the introduction of interstitial carbon has a remarkable effect on the magnetic and, consequently, electronic properties of these compounds. 

Figure 2.6 Polyhedral structure (left) and space-filling structure (right) of the Movl72Mov6oUo H ball cluster. The spacefilling structure is looking directly down the one of the M09O9 pores.

Figure 7. Space-filled [001] projection of the siloxane ditrigonal cavity of kaolinite. Space-filled structure of hydrazine is also shown, drawn to the same scale.

Fig. 2. A 5-HT2A-receptor model constructed from the rhodopsin crystal structure. Serotonin is shown as a space-filled structure. Magenta colored backbone traces represent modeled structures of low reliability (N-terminus, C-terminus, and i3) as well as segments generated by insertion into or deletion of rhodopsin residues (el, e2, e3, and i3 loops). Stick structures of the side chains of conserved residues (yellow), ligandbinding site residues (red), and residues involved in receptor activation are shown. (Illustration appears in color in insert that follows p. 240.)...

Table Some binary structures based on close-packed arrays of anions Array Holes filled Structure type Examples Fee All octahedral Rock salt (NaCl) LiF, MgO V2 octahedral Cadmium chloride MgCl2...

Other important but perhaps less rigorous applications in the field of leisure include air beds air-filled structures as enclosures for exhibitions, sports arenas, and so forth balloons for advertising and other purposes beach balls inflatable arm-bands, cushions, rings, etc., as swimming aids and inflatable surf-boards. 

The binding constant of the substrate acetyl-L-leucyl-L-tyrosine methylamide to pepsin (Km) is reported as 2.7 mM and the binding of the inhibitor acetyl-D-tyrosyl-D-leucine methylamide (Kt) as 5.8 mM. The binding shown in Fig. 6 was proposed for the reason that both binding constants are almost identical. This assumption is based upon the idea that the space-filling structure of leucyltyrosine in the L-configuration is similar to that of the reversed sequence, tyrosylleucine, in the D-configuration. A... 

The a helical arrangement. The peptide chain curls into a helix so that each peptide carbonyl group is hydrogen-bonded to an N—H hydrogen on the next turn of the helix. Side chains are symbolized by green atoms in the space-filling structure. 

Such supports can be dealt with in generic reaction schemes as a special type of superatom. Often, a pictorial representation is used. A polymer bead may be conveniently represented by an s orbital in common chemistry software packages. Few standards have been developed for the representation of other supports, but a filled structure designates a solid support and an open structure may be used for a soluble support. 

With a = 415 A, we set Rm = b = 2450 A. Then we find k from Equation 7.22 to be 2.19 x 10 3 A-1. This solves the geometric problem easily the spheres are constrained to sit at their observed interparticle separation by the long-range attractive tail in the Sogami potential and so, quite naturally, do not adopt a space-filling structure. 

The observed intermolecular distances show that there are only van der Waals-type intermolecular forces. Obviously, the structural relations of the phosphorus oxides are due to the endeavor to adopt an optimally dense packing (see also Section III.B). Here the rules formulated by A. I. Kitaigorodski (106), i.e., maximal space-filling structures... 

Finally, nature also takes polysaccharides and chemically modifies them to make use-fill structures. Chitin is a classic example and can be thought of as cellulose with one hydroxyl group on each monomer replaced by an acetylamino group, as illustrated in Figure 9-38. This allows for increased hydrogen ... 

Gas-filled structures are most susceptible—lungs, Gl tract, and middle ear. 

Eq. (12) has commonly been used, e.g. in the analysis of mass and gas transfer in gas-filled systems. From this relationship it may be deduced that varies from 0 to 00 and that = 1 when G = 0.5. Systems for which G 4 0.5 are poorly gas-filled ( low-porous ) and those with G > 0.5 are highly gas-filled . The rule of reciprocals ( reversal rule ) facilitates the analysis of gas-filled structures such as foamed plastics by enabling the use of the so-called complementary gas-filled (porous, cellular) systems. The complementary systems relate to each other as a mold and casting or negative and positive . 

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