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  • conformation  (2)
  • Tris(2,2,6,6-tetramethylpiperidino)indium; bis(2,2,6,6-tetramethylpiperidino)indium bromide; indium amides; X ray structure analysis  (1)
  • bunching  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 2281-2292 
    ISSN: 0887-6266
    Schlagwort(e): conformation ; phonon dispersion ; α-helix ; normal modes ; poly(L-leucine) ; density of states ; heat capacity ; Physics ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Poly(L-methionine) (PMet) is one of the two sulfur containing polyamino acids. Raman, FTIR spectra, and heat capacity measurements of PMet have been well interpreted through the normal mode analysis and the density of states derived therefrom. Earlier interpretation of heat capacity data is limited because it is based on the Tarasov model, wherein the concept of group frequency and skeletal similarity are used. A special feature of some dispersion curves is their tendency to bunch in the neighborhood of the helix angle. This has been attributed to the presence of strong intramolecular interactions. Repulsion between the dispersion curves is also observed. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 2281-2292, 1997
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 34 (1996), S. 1213-1228 
    ISSN: 0887-6266
    Schlagwort(e): poly(β-benzyl-L-aspartate) ; conformation ; left-handed ; α helix ; bunching ; crossover ; repulsion ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Poly(β-benzyl-L-aspartate) (PBLA) is an unusual polypeptide, which is capable of going into four different conformations, namely, left-handed α helix, right-handed α helix, ω helix, and β pleated sheet. The present work is a complete study of normal modes and their dispersion in the unusual left-handed α form. A special feature of some of the dispersion curves is their tendency to bunch in the neighborhood of helix angle. This is attributed to the presence of strong intramolecular interactions. Crossing and repulsion between the dispersion curves is also observed. The N-deuterated analogue of PBLA has been studied to check the validity of assignments and force field (Urey Bradley). Specific heat has been obtained from dispersion curves via density of states. A comparative study of left-handed and right-handed forms is presented. © 1996 John Wiley & Sons, Inc.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1060-1064 
    ISSN: 0044-2313
    Schlagwort(e): Tris(2,2,6,6-tetramethylpiperidino)indium; bis(2,2,6,6-tetramethylpiperidino)indium bromide; indium amides; X ray structure analysis ; Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Monomeric Bis and Tris(amides) of IndiumThe synthesis of tris(2,2,6,6-tetramethylpiperidino)indium 1 and of bis(2,2,6,6-tetramethylpiperidino)indium bromide 2 are described. Both compounds were characterized by NMR and mass spectroscopy. They are monomeric in solution and gasphase. A crystal structure analysis of 1, also described in this work, proofs monomeric 1 in the solid state, too.
    Notizen: Die Darstellung von Tris(2,2,6,6-tetramethylpiperidino)indium 1 und von Bis(2,2,6,6-tetramethylpiperidino)-indiumbromid 2 werden beschrieben. Beide Verbindungen wurden NMR und massenspektroskopisch untersucht. Sie liegen in Lösung und Gasphase monomer vor. Die Analyse der Kristallstruktur von 1 belegt dessen monomeres Vorliegen.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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