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Volumn 119, Issue 1, 1997, Pages 86-93

Molecular symmetry and the design of molecular solids: The oxalamide functionality as a persistent hydrogen bonding unit

Author keywords

[No Author keywords available]

Indexed keywords

OXALIC ACID DERIVATIVE; UREA DERIVATIVE;

EID: 0031043017     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja961958q     Document Type: Article
Times cited : (134)

References (31)
  • 1
    • 1842356561 scopus 로고    scopus 로고
    • note
    • 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.
  • 7
    • 84947674140 scopus 로고
    • 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.
    • (1992) Mol. Cryst. Liq. Cryst. , vol.211 , pp. 99-109
    • Lauher, J.W.1    Chang, Y.-L.2    Fowler, F.W.3
  • 13
    • 1842388327 scopus 로고    scopus 로고
    • note
    • 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.
  • 15
    • 33845551500 scopus 로고
    • 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.
    • (1983) J. Am. Chem. Soc. , vol.105 , pp. 765-767
    • Berkovitch-Yellin, Z.1    Leiserowitz, L.2
  • 16
    • 33845551500 scopus 로고
    • 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.
    • (1977) Acta Crystallogr., Sect. B , vol.33 , pp. 2719-2723
    • Leiserowitz, L.1    Nader, F.2
  • 17
    • 33845551500 scopus 로고
    • 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.
    • (1976) Acta Crystallogr., Sect. B , vol.32 , pp. 775-802
    • Leiserowitz, L.1
  • 18
    • 1842281536 scopus 로고    scopus 로고
    • note
    • 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.
  • 19
    • 1842318834 scopus 로고    scopus 로고
    • note
    • 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.
  • 26
    • 1842316931 scopus 로고    scopus 로고
    • note
    • ○. These values are somewhat similar to those found for 1o (polymorph B) as shown in Table 1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.