An NMR study of PF6− ions in polypyrrole - ScienceDirect
2007年6月1日 · In the present paper, we describe 1D P 31 NMR, P 31 relaxation analysis, NOE difference spectroscopy, and pulsed-field gradient (PFG) NMR to systematically investigate …
19F Chemical Shifts and Coupling Constants - UC Santa Barbara
Chemical Shift Table For certain compounds, the listed chemical shift pertains to the F shown in bold. The primary references for these values are: 2) Compilation of reported F19 NMR …
NMR Spectroscopy Primer - University of Manchester
The six fluorines are all equivalent in the [PF 6] - anion and so the 31 P NMR spectrum consists of a septet. The separation between any adjacent pair of peaks is the P-F coupling constant, in …
Top: 19 F NMR spectrum of 0.15 M LiPF 6 in DMSO; bottom: 31 P NMR …
Pure lithium hexafluorophosphate (LiPF6) was successfully prepared at room temperature (23 degrees C) by introducing fluorine gas into a reactor containing LiF and P at -196 degrees C. …
Solid state NMR characterization of polyrrole: The nature of …
1993年3月15日 · In this work we investigate the nature of the PF6- ion in electrochemically prepared polypyrrole at various levels of oxidation using 19F and 31p NMR. EXPERIMENTAL …
1 H NMR spectrum of 3a-PF6 (500 MHz, DMSO-d6) - ResearchGate
The equivalent ratio of imidazolium units and PEG segments was confirmed by 1 H NMR characterization. Four different triplet peaks of CH2-X (X = N + or O) are observed at δ 3.6 …
Chemistry in fuming nitric acids—I. NMR spectroscopic study of PF
1983年1月1日 · HPO 2 F 2 gives rise to H 2 PO 3 F and HF (with smaller amounts of PF 6 also present). The 31 P NMR spectrum of P 4 O 10 in HDA exhibits four resonances assigned to P …
An NMR study of PF 6 − ions in polypyrrole | Request PDF
2007年6月1日 · We present a 13C NMR study of polythiophene, polypyrrole and polyaniline. The results have been obtained by cross-polarization with proton decoupling and magic angle …
PGSE NMR Diffusion Overhauser Studies on [Ru (Cp*) (η6‐arene)] [PF6 …
2008年6月11日 · PGSE diffusion and 19 F, 1 H HOESY NMR studies for a series of PF 6 salts in dichloromethane are presented. The extent of the ion pairing and the relative positions of the …
13C NMR Determination of the Composition of Linear Low …
1999年2月19日 · A complete 13 C NMR characterization of two linear low-density polyethylenes (LLDPE), one highly branched and the other lowly branched, is presented. These LLDPE were …