198 Topics in Current Chemistry Editorial Board: A. de Meijere KN ...

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124 R.E. Meléndez · A.D. Hamilton a b 45 46 Fig. 30. Formation of sheets stabilized by C-H◊◊◊N (45) and C-H◊◊◊O (46) hydrogen bonds tapes stabilized by CN◊◊◊Cl interactions [77, 78]. Eight compounds of this type have been studied crystallographically. The structure of the prototype 2,3-dicyano-5,6-dichlorobenzene consists of molecular tapes which are linked by a “dimeric loop” synthon (Fig. 31a). When methoxy groups are in the 1,4-positions the same pattern is observed; however, as the bulk of the alkoxy groups is increased, the CN◊◊◊Cl interactions become distorted to the point that hydrophobic interactions of the alkoxy chains are the major determinants of the struc-
Hydrogen-Bonded Ribbons, Tapes and Sheets as Motifs for Crystal Engineering 125 47 Fig. 31 a, b. CN◊◊◊Cl mediated tapes are formed when R 1 and R 2 are small non-hydrogen bonding groups (1 and 2). b However, as the substituents get larger, sheets start forming ture (Fig. 31b). In the case of the dihydroxy derivative, the Cl is unable to compete with the O-H groups and one can expect the O-H◊◊◊N interaction to dominate in the crystal structure. Pascal and Ho have also observed the formation of N◊◊◊Cl donor-acceptor interactions in the formation of sheets by cyanuric chloride (48) (Fig. 32) [79]. They have also synthesized and studied molecular associations of receptors based on these donor-acceptor forces [80]. The iodo◊◊◊nitro synthon has been used in the structures of 4-iodonitrobenzene (49), the 1:2 complex between 1,4-dinitrobenzene and 4-iodocinnamic acid (51) [81], and the 1:1 complex between 1,4-dinitrobenzene and 1,4-diiodobenzene (50) [82]. The target in the work was the formation of a linear tape a b (1) (2) (3) (4) (5) (6) (7) (8)
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198 Topics in Current Chemistry Edi
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Design of Organic Solids Volume Edi
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Volume Editors Prof. Dr. Edwin Webe
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VIII preface tion at an amazing lev
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Contents of Volume 196 Carbon Rich
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2 J.P. Glusker 5 Interactions of Pl
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4 J.P. Glusker Perturbations to the
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6 J.P. Glusker 2.1 Sources of Cryst
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8 J.P. Glusker other induced, will
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10 J.P. Glusker The forces here hav
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12 J.P. Glusker lographic structure
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14 J.P. Glusker a c Fig. 6 a - c. D
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16 J.P. Glusker hydrogen bond H◊
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18 J.P. Glusker Fig. 9. Citric acid
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20 J.P. Glusker peptide plane and a
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22 J.P. Glusker 4.5 F◊◊◊H Int
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24 J.P. Glusker rine-containing com
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26 J.P. Glusker Fig. 17. The packin
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28 J.P. Glusker bind to a metal ion
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30 J.P. Glusker As for carboxylate
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32 J.P. Glusker Fig. 24. The magnes
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34 J.P. Glusker structures of magne
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36 J.P. Glusker b a Fig. 28 a, b. A
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38 J.P. Glusker Fig. 30. Complexati
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40 J.P. Glusker 7.1 Descriptions of
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42 J.P. Glusker Fig. 34. Glycine cr
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44 J.P. Glusker bonding capabilitie
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46 J.P. Glusker 2. Non-intercalativ
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48 J.P. Glusker d Fig. 37 d. The ch
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50 J.P. Glusker Fig. 39. Hydrogen-b
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52 J.P. Glusker 72, 104], but other
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54 J.P. Glusker 23. Cody V, Murray-
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56 J.P. Glusker: Directional Aspect
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58 A. Nangia · G.R. Desiraju 7 Sup
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60 A. Nangia · G.R. Desiraju elect
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62 A. Nangia · G.R. Desiraju 14 15
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64 A. Nangia · G.R. Desiraju [23]
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66 A. Nangia · G.R. Desiraju struc
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68 A. Nangia · G.R. Desiraju Fig.
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70 A. Nangia · G.R. Desiraju -NH 2
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Page 161 and 162: 154 Y. Aoyama The desorption of the
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Page 165 and 166: 158 Y. Aoyama 5 Concluding Remarks
Page 167 and 168: 160 Y. Aoyama 4. Hölderich W, Hess
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Crystalline Polymorphism of Organic
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Author Index Volumes 151-198 Author
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Author Index Volumes 151 - 198 2 1
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Author Index Volumes 151 - 198 213
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Author Index Volumes 151 - 198 2 ]
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Springer and the environment At Spr
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198 Topics in Current Chemistry Editorial Board: A. de Meijere KN ...

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