Packing diagram

The packing diagram given in Figure 2 provides a simple structural basis of the magic numbers.1... 

Fig. 2.28 X-ray crystal structures of parallel sheet-forming and all-un//fce-/F -peptides 116 and 117 [10, 191]. Views along the parallel amide planes and crystal packing diagram show the parallel pleated sheet arrangement (view perpendicular to the amide planes).

Figure 7. Packing diagrams with views along a (top), b (middle), and c (bottom) for PbTX-1 dimethyl acetal.

Figure 1.43 Packing diagram oftAu2(carb)2Ag(p-3,5-Pli2pz)]2.

Fig. 32. Crystal packing diagram for 77, suggestive of polymerization through nitro-zinc coordination interactions.

Figure 10 LT phase (left) and HT phase (right) packing diagrams of TTTA radical centre the temperature dependence of % on heating and cooling...

Figure 10 Packing diagram of compound 24, viewed along the a axis, showing intra- and inter-molecular contacts...

Fig. 2 Packing diagram of the layered structure of kl-(BEDT-TTF)2Cu(CF3)4(TCE) (top). The packing motif of the BEDT-TTF electron donor molecules (lower left). The anion layer contains both disordered [Cu(CF3)4] anions and neutral TCE solvent molecules (lower right). In all cases, hydrogen atoms have been omitted for clarity...

Fig. 5 (a) Molecular arrangements viewed along the molecular planes, (b) Packing diagram viewed along the be plane in [(ppy)Au(C8H4S8)]. Fine lines show sulfur-sulfur contacts (<3.7 A) (Reprinted with permission from [26]. Copyright 2003 Elsevier)... 

Fig. 7 Packing diagrams of (a) [(ppy)Au(C8H4S8)]2[PF6] (PF6 salt) and (b) [(ppy)Au(C8H4 S602)]2[BF4] (BF4 salt) viewed along the a axis. Side-views of the columns in the (c) PF6 salt and (d) BF4 salt. Molecular arrangements of two crystallographically independent molecules within the column of (e) PF6 salt and (f) BF4 salt. Fine lines indicate S—S contacts shorter than 3.7 A. Dashed lines indicate O—H contacts within the range of 2.62-2.70 A. (Reprinted with permission from [35]. Copyright 2008 American Chemical Society)...

Fig. 6 Structure of the fluorous palladium PCP pincer complex lO-Rfs top, ORTEP representation middle, view with atoms at van der Waals radii bottom, packing diagram...

Fig. 4 Crystal packing diagrams of a 17 16 and b 18 16, both with 2 1 stoichiometry, and c 19 16 benzene with 2 1 1 stoichiometry (dashed lines represent hydrogen bonds and close contacts) [43]...

Figure 19. Selectively labeled ORTEP packing diagram of [(2-pyridyl)(l-hydro-2-pyridinium) amine] [bis(2,6-pyridinedicarboxylato)chromate(III)] trihydrate viewed approximately down the a axis. The thermal ellipsoids are drawn at the 20% probability level. (Reproduced by permission from reference 119).

Figure 8. Partial packing diagram of diphenylguanidinium acetate, XANDAR. FI-bonds are drawn as dashed lines, some atoms were omitted for clarity.

Figure 9. Packing diagram of tris(N,N -diphenylguanidinium) hexafluoroferrate(III) hydrate, ISABAF, viewed along c. To maximize visual impact, H-bonds and covalent bonds were drawn the same way.

Drawing structures in three-dimensions is not easy and so crystal structures are often represented by two-dimensional plans or projections of the unit cell contents—in much the same way as an architect makes building plans. These projections are called packing diagrams because they are particularly useful in molecular structures... 

FIGURE 1.29 Packing diagram for a body-centred unit cell. 

FIGURE 1.50 (a) The crystal structure of CO2, (b) packing diagram of the unit cell of CO2 projected on to the xy plane. The heights of the atoms are expressed as fractional coordinates of c. C, blue spheres 0, grey spheres. 

Draw a packing diagram (Chapter 1, Section 1.4.5) of the perovskite A-type cell (CaTiOs/ABOs), determine the number of ABO3 formula units, and describe the coordination geometry around each type of atom. Repeat this procedure for the perovskite B-type unit cell. 

Figure 23 Packing diagram of Ni(bqd)2 (reproduced from ref. 1039 by permission of Springer-Verlag)...

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