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- W2024353707 abstract "Temperature dependent paramagnetic 13C and 1H NMR spectra of six cobaltocenes (RC5H4)2Co (R = H, Me, Et, i-Pr, n-Bu, t-Bu) are reported. The signals for the substituted five-ring carbons as well as for the substituent 13C and 1H nuclei which are separated from the five-ring by two bonds show a strong departure from the Curie law. This is due to a time-dependent change of the interaction between the five-ring carbons and the metal classifying cobaltocenes as nonrigid molecules. It introduces the previously unknown dynamic paramagnetic 13C NMR. Es werden temperaturabhängige paramagnetische 13C- und 1H-NMR-Spektren von sechs Kobaltocenen (RC5H4)2Co (R = H, Me, Et, i-Pr, n-Bu, t-Bu) mitgeteilt. Die Signale für die substituierten Fünfring-C-Atome sowie für die 13C- und 1H-Substituentenkerne, die zwei Bindungen vom Fünfring entfernt sind, zeigen eine starke Abweichung vom Curie-Gesetz. Dies ist zurückzuführen auf eine zeitabhängige Änderung der Wechselwirkung zwischen den Fünfring-C-Atomen und dem Metall und klassifiziert Kobaltocene als nicht-starre Moleküle. Es führt die zuvor unbekannte dynamische paramagnetische 13C-NMR ein." @default.
- W2024353707 created "2016-06-24" @default.
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- W2024353707 date "1978-10-01" @default.
- W2024353707 modified "2023-10-18" @default.
- W2024353707 title "NMR-spektroskopie an paramagnetischen komplexen" @default.
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- W2024353707 doi "https://doi.org/10.1016/s0022-328x(00)91222-1" @default.
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