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  • 1
    Electronic Resource
    Electronic Resource
    Ritter reactions. VI. Crystal structure of a new multicyclic hydroxy amide clathrate (1991)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 10 (1991), S. 431-442 
    Details
    ISSN: 1573-1111
    Keywords: Hydroxy-amide host ; carbon tetrachloride ; hydrogen bond ; layer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The compound 9-benzamido-6,7,8,9,10,11-hexahydro-5,9:7,11-dimethano-5H-benzocyclononen-7-ol,3, has been prepared, and found to crystallise as inclusion complexes ( 2 ·G where the guest G is ethyl acetate or carbon tetrachloride. The host molecule contains a benzo group as part of a rigid polycyclic framework, on which there are hydroxy and benzamido substituents. The crystal structure of the complex with CCl4 contains the host molecules hydrogen-bonded in layers, with the CCl4 molecules trapped between the layers. Two types of host-host hydrogen bonds, OH to amide carbonyl O, and amide NH to hydroxyl O, maintain the host layers. The benzo groups protrude normal to these host layers, and six such groups provide the closest surroundings of the CCl4, which is constrained to two disordered orientations at the one location. This is a layer clathrate structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01061074
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  • 2
    Electronic Resource
    Electronic Resource
    The design and synthesis of a family of multimolecular host-guest inclusion complexes (1984)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 2 (1984), S. 75-83 
    Details
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The discovery thatexo-2,exo-6-dihydroxy-2,6-dimethylbicyclo [3.3.1]nonane (2) forms novel multimolecular canal-type inclusion complexes has led to a systematic study of related molecular structures. This synthetic programme has shown that diol (2) is the prototype of a family of host diols all with the same crystallographic space groupP3121, but with distinctly different canal shapes and dimensions. The structures of the first four members of this new family of hosts are described and contrasted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00663241
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  • 3
    Electronic Resource
    Electronic Resource
    Helical tubulate inclusion compounds of ferrocene and squalene (1993)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 15 (1993), S. 385-398 
    Details
    ISSN: 1573-1111
    Keywords: Hydrogen bonding ; alicyclic diol ; helical tubulate ; crystal structure ; ferrocene ; squalene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The inclusion compounds of 2,8-dimethyltricyclo[5.3.1.13,9]dodecane-syn-2,syn-8-diol,3, with ferrocene and with squalene have been prepared. The crystal structures of these helical tubulate compounds: (3)3·(ferrocene)0.75 [P3121,a=b=13.7480(6),c=7.0312(5) Å,Z=1,R=0.038] and (3)3·(squalene)0.23 [P3121,a=b=13.677(1),c=7.0533(9) Å,Z=1,R=0.042] are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00708755
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  • 4
    Electronic Resource
    Electronic Resource
    Molecular determinants of a new family of helical tubuland host diols (1987)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 5 (1987), S. 229-232 
    Details
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The alicyclic diols (1–5) constitute the first members of a family of novel helical tubuland hosts crystallising in space group P3121 but possessing quite different canal shapes and dimensions. Consideration of their structural data has revealed two distinct sub-classes of these materials. The molecular features necessary for a diol to crystallise with the helical tubuland structure are defined and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655654
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  • 5
    Electronic Resource
    Electronic Resource
    Guest control of diol inclusion host lattices (1992)
    Springer
    Structural chemistry 3 (1992), S. 59-61 
    Details
    ISSN: 1572-9001
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A survey of the multimolecular inclusion compounds formed bysyn-2,syn-7-dihydroxy-2,7-dimethyltricyclo[4.3.1.13,8]undecane1 and 34 guest molecules shows that two inclusion crystal structures are commonly obtained, namely the helical tubulate inclusion lattice and the ellipsoidal clathrate structure type. Interactions between host and guest are necessarily weak since the host surface is hydrocarbon. Small differences in the guest molecules can tip the balance between alternative inclusion lattices, one of which is chiral. For the first time precise guest locations in the helical tubulate structure have been obtained by X-ray diffraction analysis. Crystal data:1·CCl4: space groupP3 121,a=13.2812(2),c=6.904(1) Å, unit cell contents 3(C13H22O2) + 1.2CCl4,R=0.044;1·BrCH2CH2CH2Br: space groupP3 121,a=13.206(2),c=6.915(2) Å, unit cell contents 3(C13H22O2)+ BrCH2CH2CH2Br,R=0.042;1.0- xylene: space groupP3 121,a=13.380(2),c=6.905(1) Å, unit cell contents 3(C13H22O2) + 1.2 C8H10,R=0.042.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00671980
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation and crystal structure ofexo-2,exo-6-dihydroxy-2,6-dimethyl-9-oxabicyclo[3.3.1]nonane (1993)
    Springer
    Structural chemistry 4 (1993), S. 41-51 
    Details
    ISSN: 1572-9001
    Keywords: Crystal structure ; helical tubuland inclusion ; pseudo ¯4 site
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In a further exploration of the structural factors causing alicyclic diols such asexo-2,exo-6-dihydroxy-2,6-dimethylbicyclo[3.3.1]nonane (1) to adopt the helical tubuland inclusion host structure, the title compound (8) has been synthesized and its crystal structure determined. This 9-oxa analogue of (1) has a totally different structure [C10H18O3; orthorhombic;P21212;a 18.989(4),b 19.064(3),c 14.256(3) Å;Z 20; with finalR 0.065] due to involvement of the ether oxygen atom in the hydrogen bonding network. The structure of the diol (8) approximatesP¯421 c symmetry, and 16 of the 20 molecules per cell create a hostlike structure of this symmetry, which consists of tightly bound hydrogen bonded pillars parallel toc. The remaining guestlike molecules occupy inequivalent pseudo ¯4 sites separated byc/2 to form weakly bound columns parallel toc. Hydrogen bonds also occur between the pillars and columns. An ordered structure with sensible intermolecular contacts can be formed inP212121 with thec axis doubled. A difference betweena andb axial lengths correlates with a difference in occupancies of pseudo-¯4-related sites for the guest-like component of the structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00672098
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