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  • 1
    Electronic Resource
    Electronic Resource
    Lithium-selektive Chromoionophore vom Arylazobutenoat-Typ (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 265-268 
    Details
    ISSN: 0170-2041
    Keywords: Butenoic acid, arylazo- ; Azoalkenes ; Halochromism ; Chromoionophores ; Lithium complexes ; Crown ethers ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Lithium-Selective Chromoionophores of Arylazobutenoate TypeNew lithium-selective chromoionophoric compounds with arylazobutenoic acid structure have been synthesized from dichlorodihydropyrazole 2. The (E,E) isomers of esters of the arylazobutenoic acid (3a, 4, 5) exhibit a remarkable color change in the presence of lithium ions and triethylamine from orange to purple.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419940307
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of Host-Guest Interactions between Rubidium Salts and N-(Arylazoalkenoyl)azacoronands by Solid-State NMR SpectroscopyDedicated to Professor Dr. Reiner Radeglia on the occasion of his 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1625-1627 
    Details
    ISSN: 0009-2940
    Keywords: N-(Arylazoalkenoyl)azacoronands ; Rubidium Salts ; Host-guest interaction ; 87Rb MAS NMR spectroscopy ; 13C CPMAS NMR spectroscopy ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Rubidium salts with N-(Arylazoalkenoyl)azacoronands (2a-c), were investigated using 87Rb and 13C solid-state NMR spectroscopy. From the NMR results it is concluded that there is a host-gust interaction. This suggests that the rubidium and ammonium ions, respectively, are incorporated into the cavity between the coronand and the chromophore.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301111
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Octaphenyltitanocendichlorid (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 613 (1992), S. 76-82 
    Details
    ISSN: 0044-2313
    Keywords: Tetraphenylcyclopentadienyl complexes ; sterically demanding cyclopentadienyl ligands ; organotitanium compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Octaphenyltitanocen DichlorideOctaphenyltitanocen dichloride, (Ph4HC5)2TiCl2 (III) was prepared by the reaction of Ph4HC5Li (I) with TiCl3 · 3THF, followed by oxidation of the intermediate (Ph4HC5)2TiCl (II) with air in HCl/THF solution. III was characterized by elemental analysis, the i. r., 1H-, and 13C-n.m.r. spectrum. The X-ray crystal structure is reported and discussed.
    Notes: Octaphenyltitanocendichlorid, (Ph4HC5)2TiCl2 (III), wurde gewonnen durch Reaktion von Ph4HC5Li (I) mit TiCl3 · 3THF. Dabei intermediär entstehendes (Ph4HC5)2TiCl (II) wurde in einem HCl/THF-Gemisch mittels Luftsauerstoff oxydiert. Eine nähere Charakterisierung erfolgte durch Elementaranalyse sowie das IR-, 1H- und 13C-NMR-Spektrum. Die Molekülstruktur wird mitgeteilt und diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926130113
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  • 4
    Electronic Resource
    Electronic Resource
    Rubidium-selektive Chromoionophore mit N-(Arylazoalkenoyl)azacoronand-Struktur (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 877-880 
    Details
    ISSN: 0170-2041
    Keywords: Chromoionophores ; Rubidium compounds ; Azacoronands ; Pyrazolin-5(4H)-one, 4,4-dichloro- ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Rubidium-Selective Chromoionophores with N-(Arylazoalkenoyl)azacoronand StructureThe N-(arylazoalkenoyl)azacoronands 2a-2c have been synthesized by ring-opening reaction of the dichloropyrazolin-5(4H)-one 1 with the corresponding azacrowns. The structure of 2a was determined by X-ray analysis. In the presence of Rb+ salts the neutral solutions of 2a and 2b in acetonitrile or acetonitrile/water mixtures show a change of colour from yellow to red. Spectroscopic results of 1H-, 2H-, 13C- and 87Rb-NMR investigations indicate a complexation of the Rb ion between the crown and the phenolic OH group of 2b.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419940905
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    Paper (German National Licenses)
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