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1
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1842356561
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note
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There are many examples of physical properties that depend upon molecular orientation and spacing as well as crystallographic symmetry. Optical properties depend critically upon the relative orientation of molecular dipoles in a crystal. Electronic properties depend upon molecular contacts and spacing. Topochemical reactions depend upon molecular spacing and relative orientations.
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3
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0000706079
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(a) Zhao, X.; Chang, Y.-L.; Fowler, F. W.; Lauher, J. W. J. Am. Chem. Soc. 1990, 112, 6627-6634.
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Zhao, X.1
Chang, Y.-L.2
Fowler, F.W.3
Lauher, J.W.4
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4
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0001281257
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(b) Chang, Y.-L.; West, M. A.; Fowler, F. W.; Lauher, J. W. J. Am. Chem. Soc. 1993, 115, 5991-6000.
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J. Am. Chem. Soc.
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Chang, Y.-L.1
West, M.A.2
Fowler, F.W.3
Lauher, J.W.4
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5
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0001352975
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(c) Toledo, L. M.; Lauher, J. W.; Fowler, F. W. Chem. Mater. 1994, 6, 1222-1226.
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Chem. Mater.
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Toledo, L.M.1
Lauher, J.W.2
Fowler, F.W.3
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6
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0001041675
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(d) Kane, J. J.; Liao, R. F.; Lauher, J. W.; Fowler , F. W. J. Am. Chem. Soc. 1995, 117, 12003-12004
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Kane, J.J.1
Liao, R.F.2
Lauher, J.W.3
Fowler, F.W.4
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7
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84947674140
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3b Discrete assemblies lack translation symmetry and are characterized by their point group symmetry. An α-network has one degree of translational symmetry and is characterized by its rod group symmetry. A β-network has two degrees of translational symmetry and is characterized by its layer group symmetry. A γ-network has three degrees of translational symmetry and is characterized by its space group symmetry. Lauher, J. W.; Chang, Y.-L.; Fowler, F. W. Mol. Cryst. Liq. Cryst. 1992, 211, 99-109.
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(1992)
Mol. Cryst. Liq. Cryst.
, vol.211
, pp. 99-109
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Lauher, J.W.1
Chang, Y.-L.2
Fowler, F.W.3
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8
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0000602940
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Brock, C. P.; Schweizer, W. B.; Dunitz, J. D. J. Am. Chem. Soc. 1991, 113, 9811-9820.
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J. Am. Chem. Soc.
, vol.113
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Brock, C.P.1
Schweizer, W.B.2
Dunitz, J.D.3
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9
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0028258817
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(a) Karle, I. L.; Ranganathan, D.; Sha, K.; Vaish, N. K. Int. J. Peptide Protein Res. 1994, 43, 160-165.
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Int. J. Peptide Protein Res.
, vol.43
, pp. 160-165
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Karle, I.L.1
Ranganathan, D.2
Sha, K.3
Vaish, N.K.4
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13
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1842388327
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note
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In 7u the hydrogen of the carboxylic acid forms a hydrogen bond to the oxygen atom of the urea carbonyl, while the hydrogen atoms of the urea form hydrogen bonds to the acid carbonyl. See ref 3b.
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15
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33845551500
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Berkovitch-Yellin, Z.; Leiserowitz, L. J. Am. Chem. Soc. 1983, 105, 765-767. Leiserowitz, L.; Nader, F. Acta Crystallogr., Sect. B 1977, 33, 2719-2723. Leiserowitz, L. Acta Crystallogr., Sect. B 1976, 32, 775-802.
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(1983)
J. Am. Chem. Soc.
, vol.105
, pp. 765-767
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Berkovitch-Yellin, Z.1
Leiserowitz, L.2
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16
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33845551500
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Berkovitch-Yellin, Z.; Leiserowitz, L. J. Am. Chem. Soc. 1983, 105, 765-767. Leiserowitz, L.; Nader, F. Acta Crystallogr., Sect. B 1977, 33, 2719-2723. Leiserowitz, L. Acta Crystallogr., Sect. B 1976, 32, 775-802.
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(1977)
Acta Crystallogr., Sect. B
, vol.33
, pp. 2719-2723
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Leiserowitz, L.1
Nader, F.2
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17
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33845551500
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Berkovitch-Yellin, Z.; Leiserowitz, L. J. Am. Chem. Soc. 1983, 105, 765-767. Leiserowitz, L.; Nader, F. Acta Crystallogr., Sect. B 1977, 33, 2719-2723. Leiserowitz, L. Acta Crystallogr., Sect. B 1976, 32, 775-802.
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(1976)
Acta Crystallogr., Sect. B
, vol.32
, pp. 775-802
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Leiserowitz, L.1
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18
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1842281536
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note
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It is interesting to note that in polymorph A of 1o the β-network can be considered to be an assembly of independent α-networks, the α-networks in turn being assemblies of discrete molecules. However, in polymorph B of 1o the β-network is assembled directly from discrete molecules, and there are no symmetry independent α-networks.
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19
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1842318834
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note
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We have tried the obvious experiment of growing crystals of 3o from solutions with various pH values, but we have seen no evidence of polymorphism.
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20
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11644328584
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Allen, F. H.; Taylor, R.; Kennard, O. Acc. Chem. Res. 1983, 16, 146-153.
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(1983)
Acc. Chem. Res.
, vol.16
, pp. 146-153
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Allen, F.H.1
Taylor, R.2
Kennard, O.3
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21
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0001702030
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Klaska, K. H.; Jarchow, O.; Scham, W.; Widjaja, H.; Voss, J.; Schmalle, H. W. J. Chem. Res. 1980, 104, 1643-1700.
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(1980)
J. Chem. Res.
, vol.104
, pp. 1643-1700
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Klaska, K.H.1
Jarchow, O.2
Scham, W.3
Widjaja, H.4
Voss, J.5
Schmalle, H.W.6
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22
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0000346118
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Yamaguchi, K.; Matsumura, G.; Haga, N.; Shudo, K. Acta Crystallogr., Sec. C 1992, 48, 558-559.
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(1992)
Acta Crystallogr., Sec. C
, vol.48
, pp. 558-559
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Yamaguchi, K.1
Matsumura, G.2
Haga, N.3
Shudo, K.4
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23
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0004215631
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Bhattacharjee, S. K.; Ammon, H. L. Acta Crystallogr., Sec. B 1982, 38, 2503-2505.
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(1982)
Acta Crystallogr., Sec. B
, vol.38
, pp. 2503-2505
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Bhattacharjee, S.K.1
Ammon, H.L.2
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24
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1842392243
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Chen, R.; Rheingold, A. L.; Brill, T. B. J. Crystallogr. Spectrosc. 1991, 21, 173-177.
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(1991)
J. Crystallogr. Spectrosc.
, vol.21
, pp. 173-177
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Chen, R.1
Rheingold, A.L.2
Brill, T.B.3
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25
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0017397245
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Fryer, R. I.; Earley, J. V.; Blout, J. F. J. Org. Chem. 1977, 42, 2212-2219.
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(1977)
J. Org. Chem.
, vol.42
, pp. 2212-2219
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Fryer, R.I.1
Earley, J.V.2
Blout, J.F.3
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26
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1842316931
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note
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○. These values are somewhat similar to those found for 1o (polymorph B) as shown in Table 1.
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27
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84985636766
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Kondo, K.; Murata, K.; Miyoshi, N.; Murai, S.; Sonoda, N. Synthesis 1979, 735-736.
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(1979)
Synthesis
, pp. 735-736
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Kondo, K.1
Murata, K.2
Miyoshi, N.3
Murai, S.4
Sonoda, N.5
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28
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0009505018
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McKay, A. F.; Tarlton, E. J.; Petri, S. I.; Steyermark, P. R.; Mosley, M. A. J. Am. Chem. Soc. 1958, 80, 1510-1517.
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(1958)
J. Am. Chem. Soc.
, vol.80
, pp. 1510-1517
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McKay, A.F.1
Tarlton, E.J.2
Petri, S.I.3
Steyermark, P.R.4
Mosley, M.A.5
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