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  • 1
    ISSN: 0044-2313
    Keywords: Tetrahetero-tetrahedrane anions ; G44-, Sn44; ; infrared, Raman spectra; ; internal vibrations ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Internal Vibration of the Tetrahetero-Tetrahedrane Anions Ge44-, Sn44-, and Pb44The Frequencies of the internal vibrations ν1 (A1), ν2(E), ν3(T2) of the tetrahetero-tetrahedrane an ions Ge44- and Sn44- are determined from the infrared and Raman spectra of K7LiGe8 and KSn, respectively. A comparison of the characteristic vibration of tetrahedrane anions X44- (X = Si, Ge, Sn)and the isoelectronic neutral tetrahedranes Y4 of the neighbouring elements (Y = P, As, Sb) shows a rather constant ratio of the corresponding frequencies k = v˜(X44-) = 0,77. This allows for an estimate of v˜(Pb44-) from the known Bi4data. In the inflated spectrum of KPb bands are observed in the predicted frequency range.
    Notes: Aus den Infrarot-und Raman-Spektren von K7LiGe8 und KSn werden die Frequenzen der inneren Schwingungen ν1(A1), ν2(E) und ν3(T3) der Tetrahetero-Tetrahedran -Anionen Ge44- und Sn44- bestimmt. Der Vergleich der charakteristischen Schwingungen von Tetrahedran-Anionen X44-(X = Si, Ge, Sn) und isoelektronischen neutralen Tetrahedranen Y4 der Nachbarelemente (Y = P,As, Sb)ergibt ein nahezu konstantes Verhältnis für die einander entsprechenden Frequenzen k = v˜(X44-)/v˜(Y4) = 0,77. Damit werden aus den Frequenzen v˜(Bi4) Werte für v˜(Pb44-) abgeschätzt, welche mit Banden im Infrarot-Spektrum von KPb übereinstimmen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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