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  • Wiley-Blackwell  (9)
  • Springer  (4)
  • 1
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    Korrelation zwischen Bindungslängen und -winkeln, Valenz-Kraftkonstanten und NMR-Kopplungen in Se2Sn3Me6 und Se3Sn3Me6 (1980)
    Springer
    Details
    Publication Date: 1980-01-01
    Print ISSN: 0016-1152
    Topics: Chemistry and Pharmacology
    Published by Springer
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    PAPER CURRENT
  • 2
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    Darstellung einiger oligomerer Cyclo{oligo[(2-hydroxy-1,3-phenylen)-methylen]}e. Spektroskopische Untersuchung ihrer Pseudorotation (1978)
    Springer
    Details
    Publication Date: 1978-02-01
    Print ISSN: 0372-820X
    Electronic ISSN: 1435-1536
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    Darstellung einiger oligomerer Cyclo{oligo[(2-hydroxy-1,3-phenylen)-methylen]}e. Spektroskopische Untersuchung ihrer Pseudorotation (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 177-177 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01679236
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  • 4
    Electronic Resource
    Electronic Resource
    Korrelation zwischen Bindungslängen und -winkeln, Valenz-Kraftkonstanten und NMR-Kopplungen in Se2Sn3Me6 und Se3Sn3Me6 (1980)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 304 (1980), S. 268-268 
    Details
    ISSN: 1618-2650
    Keywords: Selen-Zinn-Komplexe, Zinn-Selen-Komplexe ; Kraftkonstanten, KMR-Kopplung, Se2Sn2Me6, Se3Sn3Me6
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00488812
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  • 5
    Electronic Resource
    Electronic Resource
    Carbon-13 NMR parameters of phenyltin halogenides and phenyltin chalcogenides (1981)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 17 (1981), S. 296-298 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 13C NMR shift parameters and couplings to tin are reported for nine phenyltin halogenides and seven phenyltin chalcogenides, as well as the T1 results for Ph2SnTe. A pronounced linear dependence of all coupling constants on the para-carbon shift is discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270170414
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  • 6
    Electronic Resource
    Electronic Resource
    Uber Konformation und Konfiguration einiger Dichalkogenastannolane (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 425 (1976), S. 249-256 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Conformation and Configuration of Some DichalcogenastannolanesThe 1H-n.m.r. patterns of 4-substituted 1.3-dioxa-(1.3-dithia-)-2-stannacyclopentanes and of 1.3-oxathia-2-stannacyclopentanes are analysed. The spectral parameters are elucidated by simulation accompanied by least squares fitting procedures. The coupling constants are related to the conformation of the heterocycles and to the configuration at tin.
    Notes: Die Protonenspektren von 4-substituierten 1,3-Dioxa-(1,3-Dithia-)2-stannacyclopentanen und von 1,3-Oxathia-2-stannacyclopentanen werden analysiert und die Parameter durch Simulationsrechnung gewonnen. Die Kopplungskonstanten werden in Beziehung zur Konformation der Heterocyclen zur und Konfiguration am Zinnatom gebracht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764250308
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  • 7
    Electronic Resource
    Electronic Resource
    Zinn-Chalkogen-Heterocyclen. III. Darstellung von 2,4,5-Hexamethyl-1,3-diselena-2,4,5-tristannolan und dessen Telluranalogon (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 432 (1977), S. 269-274 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tin-Chalcogen Heterocycles. III. Preparation of 2,4,5-Hexamethyl-1,3-diselena-2,4,5-tristannolane and its Tellurium AnalogonTwo tin-rich heterocycles are prepared. The constitution as five-membered tin chalcogen cycles is confirmed by elemental analysis, x-ray fluorescence analysis, mass and p.m.r. spectra.
    Notes: Die Darstellung zweier zinnreicher Chalkogenheterocyclen wird beschrieben. Untersuchungen zur Konstitution erfolgen mittels Elementaranalyse, Röntgenfluoreszenzanalyse, Massen- und Protonenresonanzspektren. Die Konstitution der Verbindungen läßt sich als Zinn-Chalkogen-Fünfring beschreiben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774320138
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  • 8
    Electronic Resource
    Electronic Resource
    Kristallstruktur, Schwingungs- und NMR-Spektren von Dodecaphenylcyclohexastannan (Ph2Sn)6 (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 506 (1983), S. 99-109 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure, Vibrational and N.M.R. Spectra of Dodecaphenylcyclohexastannane (Ph2Sn)6The six-membered homocycle (Ph2Sn)6 was obtained under condition described for the preparation of the five-membered ring (Ph2Sn)5. The homocycles (Ph2M)6, M = Si, Ge, Sn exist in three crystalline forms, without solvent, containing seven moles of crystal benzene, and with two moles alkylbenzene. The crystal structure of (Ph2Sn)6 · 2 Toluene was determined and refined until R = 0.041. The parameters of the Sn6 ring are: Sn—Sn bond length 278.0 pm, bond angle 112.5°, and torsion angle 51.6°. The homorings (Ph2M)6 form a nearly identical series of rigid normal conformations and spherical space filling.IR and Raman spectra of (Ph2Sn)6 are given and discussed. There is a strong coupling between Sn6 ring vibrations and mass sensitive vibrations of the phenyl groups. 119Sn und 13C N.M.R. spectra exhibit long range couplings with Sn nuclei. The values of the coupling constants indicate only a minor effective charge at the Sn atoms.
    Notes: Der 6gliedrige Homocyclus (Ph2Sn)6 wurde unter Bedingungen erhalten, die für die Darstellung des 5gliedrigen Homocyclus (Ph2Sn)5 beschrieben sind. Die Homocyclen (Ph2M)6 mit M = Si, Ge, Sn kommen in drei kristallinen Formen vor, lösungsmittelfrei, mit 7 Mol Kristallbenzol und mit 2 Mol aliphatisch substituiertem Kristallbenzol. Die Kristallstruktur des (Ph2Sn)6 · 2 Toluol wurde bestimmt und bis R = 0,041 verfeinert. Die Parameter des Sn6-Ringes sind: Sn—Sn-Abstand 278,0 pm, Bindungswinkel 112,5°, Torsionswinkel 51,6°. Bezüglich ihrer Phenylgruppenanordnung bilden die Homocyclen (Ph2M)6 eine nahezu identische Reihe mit starrer Normalkonformation und sphärischer Raumerfüllung.IR- und Ramanspektren des (Ph2Sn)6 werden mitgeteilt und diskutiert: Sn6-Ringschwingungen koppeln weitgehend mit massenabhängigen Schwingungen der Phenylgruppen. 119Sn- und 13C-NMR-Spektren zeigen weitreichende Kopplungen mit Sn-Kernen, die Einzelwerte lassen auf eine vergleichsweise kleine effektive Ladung am Sn-Atom schließen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835061111
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  • 9
    Electronic Resource
    Electronic Resource
    Über Polystannane. III. 1,2-Dichlortetramethyldistannan, eine Sn—Sn-verknüpfte helicale Bandstruktur [(…SnMe2—Cl…SnMe2—Cl…)∞]2Mit Teilen der geplanten Dissertation von S. Adams.Professor Gerhard Gattow zum 60. Geburtstage am 6. Februar 1986 gewidmet (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 532 (1986), S. 81-89 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Polystannanes. III. 1,2-Dichloro-tetramethyl-distannane. Forming a Sn—Sn-connected Helical Double Chain Structure [(…SnMe2Cl…SnMe2—Cl…)∞]2The crystal structure of the title compound has been determined at -160°C and refined to R = 0.071 (bond lengths Sn—Sn 277.0(2), Sn—Cl 244.2(3) and 244.8(3), Sn—C 214(2) pm). Intermolecular Sn…Cl connection (324.0(3) and 329.2(3) pm) results in a double chain structure. 119Sn-NMR spectra in CH2Cl2 and acetone exhibit a movable temperature dependent coordination of acetone at the distannane (1J(119Sn—119Sn) 8000 to 9000 Hz; appr. 5000 Hz in CH2Cl2).
    Notes: Die Kristallstruktur der Titelverbindung bei -160°C wurde bestimmt und bis R = 0,071 verfeinert (Abstände Sn—Sn 277,0(2), Sn—Cl 244,2(3) und 244,8(3), Sn—C 214(2) pm). Intermolekulare Sn…Cl-Verknüpfung (324,0(3) und 329,2(3) pm) führt zu den im Titel beschriebenen Helixbändern. 119Sn-NMR-Spektren in CH2Cl2 und Aceton zeigen für letzteres eine lose, temperaturabhängige Koordination an die Sn-Atome (1J(119Sn—119Sn) 8000 bis 9000 Hz; etwa 5000 Hz in CH2Cl2).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865320113
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  • 10
    Electronic Resource
    Electronic Resource
    Kristallstrukturbestimmung und Schwingungsanalyse von 2,2,4,4,5,5-Hexamethyl-1,3-diselena-2,4,5-tristannolan Se2Sn3(CH3)6 (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 470 (1980), S. 45-58 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure Determination and Vibrational Analysis of 2,2,4,4,5,5-Hexamethyl-1,3 -diselena-2,4,5-tristannolane Se2Sn3(CH3)6The crystal structure of the title compound has been determined and refined to a R of 0.043. The five membered ring Se2Sn3 has envelope conformation with 1 axial, 1 equatorial and 4 isoclinic methyl substituents. The phase angles of a pseudo rotation cycle are discusssed. The crystal structure contains short intermolecular Se…Sn contacts (376-398 pm) clearly influencing intramolecular Sn—Se bonds in trans position. A correlation plot yields two distinct Sn—Se distances of 252.5 (15) and 254.5 (15) pm in the 1-molecule; Sn—Sn distance 278 (1) p. IR and raman spectra are given and evaluated by means of a normal coordinate analysis based on the crystallographic parameters resutling in force constants fSn—Sn = 140 (2), fSn-Se = 138 (2) and 128 (2), fsn-C = 220 (2) and 213 (2) Nm-1. Bond distances, valence angles and force constants in the solid and spin-spin-couplings between 119Sn, 77Se, 13C and 1H in solution are compared for the cases of 1 and the homologous compound Se3Sn3Me6.
    Notes: Die Kristallstruktur der Titelverbindung (1) wurde bestimmt und bis R = 0,043 verfeinert. Der 5-Ring Se2Sn3 besitzt Briefumschlag-Konformation mit 1 axialem, 1 äquatorialem und 4 isoklinen Methylsubstituenten. Die Phasenwinkel innerhalb eines Pseudorotationskreislaufs werden diskutiert. In der Kristallstruktur bestehen kurze intermolekulare Se…Sn-Wechselwirkungen von 376-398 pm, die trans zu ihnen stehende intramolekulare Sn—Se-Bindungen deutlich beeinflussen. Ein Korrelations-Plot führt zu zwei unterschiedlichen Sn—Se-Abständen von 252,5 (15) und 254,5 (15) pm in der 1-Molekel; Sn—Sn-Abstand 278 (1) pm. IR- und Raman-Spektren werden mitgeteilt und mit Hilfe einer von den kristallographischen Lageparametern ausgehenden Normalkoordinatenanalyse ausgewertet. Es resultieren Valenzkraftkonstanten fsn-Sn = 140(2), fSn-Se = 138 (2) und 128 (2), fSn-C = 220 (2) und 213 (2) Nm-1. Bindungsabstände, Bindungswinkel und Kraftkonstanten im Feststoff und Spin-Spin-Kopplungen zwischen 119Sn, 77Se, 13C und 1H in Lösung für 1 und die homologe Verbindung Se3Sn3Me6 werden vergleichen.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804700107
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