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  • 1
    Electronic Resource
    Electronic Resource
    Complexation of neutral guests within cavities of synthetic neutral host molecules (1984)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 1 (1984), S. 369-386 
    Details
    ISSN: 1573-1111
    Keywords: Complex ; host molecules ; guest molecules ; host-guest chemistry ; receptor model ; enzyme model ; inclusion (of molecules) ; macrocyclic compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00665480
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  • 2
    Electronic Resource
    Electronic Resource
    Ein neues makrobicyclisches Wirtmolekül-Synthese und ANS-Komplexierung (1986)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 4 (1986), S. 379-385 
    Details
    ISSN: 1573-1111
    Keywords: 1,8-Anilinonaphthalene sulfonic acid (1,8-ANS) ; association constants ; complex constants ; host/guest complex chemistry ; lactams ; large ring compounds ; macro(mono-/bi)-cyclic compounds ; synthetic hosts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The synthesis of the new host molecule1b is described. Its complexation properties towards 1,8-ANS as a guest are reported. Compared to the monomacrocyclic host molecules2c and2e, the complex stabilities of1b with ANS as a guest are particularly higher, suggesting that the macrobicyclic host forms a better fitting niche to allow the nestling of guest molecules in solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656165
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  • 3
    Electronic Resource
    Electronic Resource
    Makrocyclische Ionophore beruhend auf oligomeren Terephthaldiamiden mit von Gastmolekülen abhängiger Selektivität (1985)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 68 (1985), S. 940-944 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Macrocyclic Oligolactams Based on Terephthalic Acid as Ionophores with Selectivity Depending on Included Guest MoleculesMacrocyclic 20- to 60-membered oligolactam hosts exhibit ion selectivities in poly(vinyl chloride) membranes which depend on the ring size and on the substituents of the amide N-atoms. The selectivity may be changed by loading the macrocyclic host with CHCl3 as guest molecule.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19850680416
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  • 4
    Electronic Resource
    Electronic Resource
    Neue wasserlösliche makrobicyclische Großhohlräume (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 375-379 
    Details
    ISSN: 0009-2940
    Keywords: Cyclophanes / Hostguest chemistry / Macrocyclic compounds / Phanes / Supramolecular chemistry ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Watersoluble Macrobicyclic CavitiesThe watersoluble macrobicyclic compounds 1, 3, 5a, and 5b have been synthesized for the first time bearing large endolipophilic cavities of different sizes and shapes. They were studied with respect to their interactions towards lipophilic guest compounds. The “in/out” isomerism of the hitherto largest endolipophilic cavities 4a, 4b, 5a, and 5b has been investigated by 1H-, 13C-NMR spectroscopy and FAB mass spectrometry. The absence of significant 1H-NMR high-field shifts in hostguest studies is attributed to the rigidity of cavities 1 and 3, whilst the isomeric cavities 5a and 5b contain very large openings. Orientational fluorescence spectroscopy investigations, however, suggest hostguest interactions of the isomers 5a and 5b with ammonium 8-anilino-1-naphthalenesulfonate (8,1-ANS).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230224
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  • 5
    Electronic Resource
    Electronic Resource
    Pentamakrocyclische Tris-Kronen. - Selektive Bindung von Kationen, Anionen und Neutralverbindungen (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 859-867 
    Details
    ISSN: 0009-2940
    Keywords: Crown compounds / Host-guest chemistry / Macropentacyclic compounds / Phanes / Supramolecular chemistry ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pentamacrocyclic Tris-Crown Hosts. - Selective Binding of Cationic, Anionic, and Neutral Guest CompoundsThe tris-crown host compounds 1-4 were synthesized for the first time. The X-ray crystal structures of 2 and of the 1:3 complex of 1 and KSCN were determined. Whereas in the free crown 2 a less well preorganized molecular cavity is encountered, in the complex of 1 with KSCN one potassium ion is bound to each crown ether unit. One of the three SCN- anions is situated in the interior of the cavity and in addition is disordered in such a way as to be bound to the K+ using partially the S atom of the SCN- ion. Organic guest molecules like 1,2-, 1,3-, 1,5-, 2,6-, and 2,7-naphthalenediol as well as β-naphthol in acidic water solution are bound selectively in the interior of the cavities of the host molecules 2 and 3, but not by 1 and 4, the cavities of which seem to be too small and too large, respectively. In contrast, the binding of α-naphthol and of smaller phenolic guest molecules like phenol, resorcinol, pyrocatechol, phloroglucinol, pyrogallol, and 1,2,4-trihydroxy-benzene with the host 1-4 is much less pronounced (1H- NMR highfield shifts).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230435
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  • 6
    Electronic Resource
    Electronic Resource
    Wirt-Gast-Verbindungen makrocyclischer Wirtmoleküle mit Wasser, Xylol und Dioxan (1983)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 2344-2354 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Host-Guest Compounds of Macrocyclic Host Molecules with Water, Xylene, and DioxaneThe preparation and X-ray structural investigation of the three stoichiometric host-guest compounds 1·2 H2O, 2·xylene and 3·3 dioxane, is described. Whereas the tetralactame cryptand host 1 with water forms hydrogen bridges using its carbonyl oxygen atoms, leading to chain type arrangement in the crystal, the para-xylene adduct of cryptand 2 and the dioxane adduct of the tetraazaphane 3 both are channel type inclusions of the guest molecules in the host lattice. It is concluded that even if an approximate geometric fit of a guest to the host cavity is given, the alternative of a lattice inclusion nevertheless may be favoured.
    Notes: Darstellung und die durch Röntgenstrukturanalyse geklärten räumlichen Verhältnisse der stöchiometrischen Wirt/Gast-Verbindungen 1·2H2O, 2·Xylol und 3·3 Dioxan im Kristallgitter werden beschrieben. Während der Tetracarbonsäuretetraamid-Cryptandwirt 1 mit Wasser über H-Brückenbindungen zu den Carbonylgruppen kettenartige Strukturen bildet, findet man für das Xylol-Addukt des Cryptanden 2 und für das Dioxan-Addukt des Tetraaza-phans 3 kanalartige Anordnungen der Lösungsmittelmoleküle im Wirtgitter. Es wird die Schlußfolgerung gezogen, daß auch bei räumlich annähernd ineinander passender Wirt/Gastmolekül-Topologie nicht zwangsläufig molekulare, sondern oft Gitter-Einschlüsse zustandekommen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19831160623
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  • 7
    Electronic Resource
    Electronic Resource
    Ligandstruktur und Komplexierung, XLIV. Synthese und Selektivität neuartiger vierarmiger nichtcyclischer Neutralliganden (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 899-907 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, XLIV. Synthesis and Selectivity of New Four-Armed Noncyclic Neutral LigandsNew, noncyclic neutral ligand systems 4-6 and 8-11 of the tetrapode type 3, equipped with various end groups, were synthesized. The cation selectivity depends on the structure of the end groups. The potentiometrically determined values of the complex stability constants as a rule lie between those of the analogous tripode (2) and dipode ligands (1). Numerous complexes between the four-armed complexing agents and several dipodands (14-16) and alkali and alkaline earth metal salts are reported.
    Notes: Neue nichtcyclische Neutralligandsysteme 4-6 und 8-11 vom Tetrapodentyp 3 mit verschiedenen Endgruppen wurden synthetisiert. Die Kation-Selektivität hängt von der Endgruppenstruktur ab. Die potentiometrisch bestimmten Komplexstabilitätskonstanten liegen i. a. zwischen denjenigen der Tripoden- (2) und Dipoden-Liganden (1). Zahlreiche kristalline Komplexe der vierarmigen Komplexbildner sowie einiger zum Vergleich synthetisierter neuer Dipodanden (14-16) mit Alkali- und Erdalkalimetallsalzen wurden erhalten.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120315
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  • 8
    Electronic Resource
    Electronic Resource
    Cyclodextrine und synthetische Wirthohlräume — Vergleich der Komplexierungseigenschaften (1985)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 3 (1985), S. 471-478 
    Details
    ISSN: 1573-1111
    Keywords: 1,8-Anilinonaphthalene sulfonic acid (1,8-ANS) ; binding strength, complex constants ; cyclodextrins ; fluorescence measurements ; host/guest complex chemistry ; macro-(mono/bi-)cyclic compounds ; synthetic hosts, lactams
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract It is shown that the synthetic host compounds described in this study possess higher complexation constants versus 1,8-ANS than β-or γ-cyclodextrin. The attachment of side chains to β-cyclodextrin increases the complex formation, whereas the value of γ-cyclodextrin is not reached. The quaternary ammonium nitrogens of the synthetic hosts may be replaced by amide groups without diminution of the association constants. Bicyclic compounds in general bind more strongly than monocyclic hosts due to tighter inclusion and increased hydrophobic interaction. The influence of side chains attached to synthetic host compounds on the complexation constants is difficult to predict.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00657499
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  • 9
    Electronic Resource
    Electronic Resource
    Surface and bulk interactions of organic molecules with calixarene layers (1994)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 349 (1994), S. 372-379 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Modified calixarenes can be used as model compounds to study molecular recognition since their molecular cavities reversibly incorporate small organic molecules. This effect has been used in chemical sensors with bulk and surface acoustic wave devices, coated with thin calixarene layers. These devices sensitively convert the mass changes during molecule/calixarene interactions into electronic signals. Thin films of modified calixarenes were prepared with various side groups and various sizes by Knudsen sublimation under well-defined, ultra-high-vacuum conditions. The interaction with perchloroethylene, chloroform, benzene, and toluene at constant temperatures, T, and partial pressures, pi, was studied systematically for different film thicknesses, d, by means of mass changes Δm=f(T,p i,d). From the thickness dependence of values, Δmeq, obtained under thermodynamic equilibrium conditions, surface and bulk effects during molecule calixarene interactions were separated. Pronounced excesses of surface concentrations of organic molecules have been found. Activation energies for molecular desorption from surface sites and for diffusion to subsurface sites were determined from mass spectroscopic results of thermal desorption behaviour. Experimental data of adsorption and desorption energies were confirmed by theoretical force field calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00326602
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  • 10
    Electronic Resource
    Electronic Resource
    Komplexe zwischen Neutralmolekülen, VII. Kronenether als Wirtssubstanzen für organische Gastmoleküle (1980)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1130-1137 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complexes Between Neutral Molecules, VII. Crown Ethers as Host Compounds for Organic Guest MoleculesNeutral, stoichiometric crystalline complexes of dibenzopyridino crown ether 2 with other crown ethers such as [12]crown-4 and with CH-acidic molecules such as acetonitrile, nitromethane, dimethyl sulfoxide as well as with formamide, dimethylformamide, dimethylacetamide and others are reported (cf. table). Of the structurally similar crown ethers 1,3,5 - 7,9 - 18 only 3,6,9,12 and 16 form, to a less extent, similar neutral molecule complexes. A 1 : 2 formamide complex of [18]crown-6 (8) has also been isolated.
    Notes: Der Dibenzopyridino-Kronenether 2 bildet neutrale, stöchiometrische, kristallisierte Komplexe mit anderen Kronenethern, wie [12]Krone-4, und mit CH-aciden organischen Verbindungen, wie Acetonitril, Nitromethan, Dimethylsulfoxid sowie Formamid, Dimethylformamid, Dimethyl-acetamid u. a. (Tab.). Von den strukturell ähnlichen Kronenethern 1,3,5 - 7,9 - 18 bilden nur 3,6,9,12 und 16 in geringerem Umfang Neutralmolekülkomplexe. Ein 1:2-Formamid-Komplex der [18]Krone-6 (8) wird gleichfalls isoliert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19801130333
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