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  • 1
    Electronic Resource
    Electronic Resource
    New chelated complexes of bis-β-carboalkoxyethyltin(IV) dichloride with S-benzyldithiocarbazate Schiff basesN.C.L. Communication No. 5247. (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 6 (1992), S. 69-74 
    Details
    ISSN: 0268-2605
    Keywords: Estertin complexes ; S-benzyldithio-carbazate ; Schiff bases ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Schiff bases [H2SBSaD], [H2SBVD] and [H2SBND], derived by the condensation of S-benzyldithiocarbazate and salicylaldehyde, 2-hydroxy-3-methoxybenzaldehyde and 2-hydroxy-1-naphthaldehyde respectively, react with diestertin dichlorides, R2SnCl2 [R=—CH2CH2CO2CH3, —CH2CH2CO2C2H5 or —CH2CH2CO2C4H9] in 1:1 molar proportion to yield chlorine-substituted complexes of the type R2Sn(Schiff base), the base being tridentate. The complexes are characterized on the basis of their elemental analyses, IR and 1H NMR spectral studies. The 13C and 119Sn NMR and the tin-carbon coupling constant data reveal the structures of the complexes to be octahedral with trans ester grouping, and bidentate ester linkages. The pentacoordinated complex (CH3)2Sn(SBSaD) was prepared by the reaction of dimethyltin oxide with H2SBSaD in equimolar proportions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590060109
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  • 2
    Electronic Resource
    Electronic Resource
    Organotin(IV) complexes of dibasic tridentate Schiff bases containing ONO donor atomsNCL Communication No. 5406 (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 7 (1993), S. 63-69 
    Details
    ISSN: 0268-2605
    Keywords: Organotin Schiff base complexes ; spectroscopic studies ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organotin(IV) Schiff base complexes of the type (L)SnR2 [where R=CH3, C6H5 or CH2CH2CO2 CH3], (LH)Sn(C6H5)3 and (L)SnCl(CH2CH2CO2 CH3) [where LH2=2-N-salicylideneimino-2-methyl-1-propanol, derived from the condensation of salicylaldehyde and 2-amino-2-methyl-1-propanol] have been prepared and characterized on the basis of their elemental analyses, IR, 1H, 13C and 119Sn NMR studies. In these mononuclear complexes the Schiff base acts either as a dianionic tridentate or as a monobasic bidentate moiety by coordinating through an alkoxy group, an azomethine nitrogen and a phenoxide ion to tin. Sulphur dioxide inserts in the tin-methyl/-phenyl bond in the above Schiff base complexes to give tin-O-sulphinates of formulae (L)RSn(SO2R) and (LH)(C6H5)2Sn(SO2C6H5).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590070108
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  • 3
    Electronic Resource
    Electronic Resource
    Novel chelated compounds of Bis-β-carbomethoxyethltin(IV) (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 465 (1980), S. 204-208 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neue Chelate des Bis-β- Carbomethoxyethlzinn(IV)Zwei- und dreizähnige Chelatinganden (s. Abstract) Können die Chloratome des Bis-β-carbomethoxethyldichlozinn(IV) unter Bildung neuer stabiler Chelatverbindungen ersetzen. Bromierung dieser Verbindungen unter milden Bedingungen zeigt, daß die Chelatinganden bevorzugt abgespalten werden. Die neun Verbindungen werden durch Elementaranalyse, IR- und PMR-Spektren sowie Molekulargewichtsbestimmungen Charakterisiert und mögliche Strukturen werden Vorgeschlagen.
    Notes: Bi- and tri-denate Chelating ligands (acetylacetone, salicylasehyde, 8-hydroxy quinoline, dibenzoylmethane, benzoyl phenhydroxlmanine, 2-hydroxy benzophenone, 2-hydroxy 4-methoxy benzophenone and salichyaldine) replace cholrine atoms of bis-β-carbomethoxyethyl dischlorotin (IV) to form new stable Cheleted compounds. Bromination studies under mild conditions indicate that in these compounds the Cheleated ligand part is preferentially cleaved. The new compounds are characterized by elemental analysis. IR and PMR spectra and molecular weight, and possible structures have been assigned.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804650124
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  • 4
    Electronic Resource
    Electronic Resource
    Cationic Ruthenium(II) Carbonyl Complexes with Nitrile LigandsNCL Communication No. 3625. (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 527 (1985), S. 203-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Kationische Carbonyl-Ruthenium(II)-Komplexe mit Nitril-LigandenStabile kationische Komplexe vom Typ [RuCO(PPh3)2(L)RCN]+[ClO4]-, mit Acetonitril bzw. Acrylonitril wurden dargestellt. Als zweizähnige Liganden (LH) dienten Acetylaceton, Benzoylaceton, Dibenzoylmethan, Trifluorothenoylaceton und 8-Hydroxochinolin. Die Komplexe wurden analysiert, ferner durch IR-, 1H- und 31P-NMR-, Leitfähigkeits- und ESCA-Messungen charakterisiert; eine Stereochemie erscheint möglich.
    Notes: Stable cationic complexes of the type [RuCO(PPh3)2(L)(RCN)]+[ClO4]- derived from acetonitrile and acrylonitrile have been synthesized. The bidentate ligands (LH) used are acetylacetone, benzoylacetone, dibenzoylmethane, trifluorothenoyl acetone and 8-hydroxyquinoline. The complexes have been characterized by elemental analysis, IR, conductivity, 1H and 31P NMR and ESCA studies, and possible stereochemistry has been established.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855270823
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  • 5
    Electronic Resource
    Electronic Resource
    Schiff Base Complexes of Rhodium(I) with Tridentate N-Methyl-S-methyldithiocarbazate Ligands NCL Communication No. 3827. (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 536 (1986), S. 173-178 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Schiffsche Basen-Komplexe des Rhodium(I) mit dreizähnigen N-Methyl-S-methyldithiocarbazat-LigandenSchiffsche Basen aus der Kondensation von β-Diketonen mit N-Methyl-S-methyl-dithiocarbazaten ergeben bei Reaktion mit [Rh(μ-Cl)(CO)2]2 cis-Dicarbonyl-Komplexe Rh(CO)2(Schiff). Die aus aromatischen Aldehyden erhaltenen bilden trans-Dicarbonyl-Komplexe. Mit einem Überschuß von Triphenylphosphin ergeben diese Komplexe nur Rh(CO)(PPh3)(Schiff). Cis-1,5-cyclooctadien (COD) reagiert mit cis-Dicarbonyl-Komplexen zu carbonylfreien Produkten Rh(COD)(Schiff); gleiche Reaktionen wurden bei trans-Dicarbonyl-Komplexen beobachtet. Oxydative Addition von Brom an diese Komplexe ergibt Dibromderivate, in denen die Schiffsche Base als zweizähniger Ligand wirkt, Rh(PPH3)2(Schiff)-Komplexe wurden durch Reaktion oben genannter Schiffscher Basen mit Rh(PPh3)3Cl erhalten. Die Strukturen dieser neuen Komplexe wurden auf Grund von IR-und 1H-NMR-Spektren bestimmt.
    Notes: Schiff bases derived from the condensation of β-diketones with N-methyl-S-methyldithiocarbazates yield cis dicarbonyl complexes Rh(CO)2 (Schiff) on reaction with [Rh(μ-Cl)(CO)2]2. Those derived from aromatic aldehydes form trans dicarbonyl complexes. These complexes with excess of triphenylphosphine give only Rh(CO)(PPh3)(Schiff). cis-1,5-cyclooctadiene (COD) reacts with cis dicarbonyl complexes to yield the carbonyl-free product Rh(COD)(Schiff); similar reactions have not been observed in the case of trans-dicarbonyl complexes. Oxidative addition of bromine to these complexes yields dibromo derivative in which the Schiff base acts as bidentate chelate. Rh(PPh3)2(Schiff) complexes have been obtained from the reaction of above Schiff bases with Rh(PPh3)3Cl. The structures of these new complexes have been determined based on IR and 1H NMR spectra.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865360520
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  • 6
    Electronic Resource
    Electronic Resource
    A novel method for the preparation of hydroxyl terminated liquid natural rubber (1986)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 7 (1986), S. 159-163 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1986.030070311
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  • 7
    Electronic Resource
    Electronic Resource
    Production of hydroxyl-terminated liquid natural rubber - mechanism of photochemical depolymerization and hydroxylation (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 35 (1988), S. 1227-1239 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Photochemical degradation of natural rubber yielded hydroxyl-terminated liquid natural rubber (HTNR) when carried out in solution in presence of H2O2. Ultraviolet radiation from a medium pressure mercury vapor lamp and sunlight were found to be almost equally effective in bringing about the depolymerization and hydroxylation of natural rubber. The variations in the composition of the reagents and exposure time on the extent of depolymerization was conducted, and a suitable procedure for the large scale preparation of HTNR was described. A probable mechanism leading to the formation of HTNR as well as the side products is discussed based on the analytical data.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1988.070350509
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  • 8
    Electronic Resource
    Electronic Resource
    Segmented block copolymers based on liquid natural rubber (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 42 (1991), S. 325-333 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Segmented block copolymers were prepared from hydroxyl-terminated liquid natural rubber (HTNR) and poly(ethylene oxide) (PEO). Toluene 2,4 diisocyanate (TDI) was used as the coupling agent for combining both types of segments. Keeping the molecular weight of HTNR constant, a series of materials were prepared using PEO with varying molecular weights. Their thermal and mechanical properties were evaluated. With increasing the PEO content, the properties vary from soft to rigid elastomers and rubber-toughened plastics. This variation in properties is caused by the changes in the sample morphology, which depends on the relative fractions of the hard and soft segments. Water absorption capability of these block copolymers was determined. Hydrogels with water content approximately up to 80% were obtained.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1991.070420204
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  • 9
    Electronic Resource
    Electronic Resource
    Extensive skeletal rearrangements in 2-(2-nitrophenyl)benzoxazole on electron impact (1984)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 19 (1984), S. 457-458 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210190911
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  • 10
    Electronic Resource
    Electronic Resource
    MCM-41 mit nanometergroßen AgRu-Partikeln in den Hohlräumen - Herstellung, Charakterisierung und KatalysatoreigenschaftenDiese Arbeit wurde vom Engineering and Physical Sciences Research Council sowie durch die Europäische Union (Stipendium für T. M.) unterstützt. (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 109 (1997), S. 2337-2341 
    Details
    ISSN: 0044-8249
    Keywords: Cluster ; Elektronenmikroskopie ; EXAFS ; Heterogene Katalyse ; Mesoporosität ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19971092029
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