Investigation of some aminophosphonates by high-resolution NMR in the solid

Khizbullin, F. F.; Strunin, B. P.; Maslennikov, E. I.; Yasman, Ya. B.; Simonov, V. D.

doi:10.1007/bf00751817

Cited by 2 publications

(1 citation statement)

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“…We note that the H 4 pmida chemical shift measured here (d = 13.1 ppm) differs from the value d = 14.8 ppm reported by Khizbullin and coworkers. [29] Two-dimensional FS-LG experiments: Strong homonuclear dipolar couplings do not usually allow resolution of different resonances using the conventional MAS technique. To improve 1 H spectral resolution we have used FS-LG HOMCOR/HETCOR dipolar correlation techniques.…”

Section: Dmentioning

confidence: 99%

X‐ray Diffraction and Solid‐State NMR Studies of a Germanium Binuclear Complex

Mafra

Paz

Shi

et al. 2005

Chemistry A European J

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A compound formulated as (C4H12N2)[Ge2(pmida)2(OH)2] x 4 H2O (where pmida(4-) = N-(phosphonomethyl)iminodiacetate and C4H12N2(2+) = piperazinedium cation), containing the anionic [Ge2(pmida)2(OH)2]2- complex, has been synthesised by the hydrothermal approach and its structure determined by single-crystal X-ray diffraction analysis. Several high-resolution solid-state magic-angle spinning (MAS) NMR techniques, in particular two-dimensional 1H-X(13C,31P) heteronuclear correlation (HETCOR) and 1H-1H homonuclear correlation (HOMCOR) experiments incorporating a frequency-switched Lee-Goldburg (FS-LG) decoupling scheme, have been employed for the first time in such a material. Using these tools in tandem affords an excellent general approach to study the structure of other inorganic-organic hybrids. We assigned the NMR resonances with the help of C...H and P...H internuclear distances obtained through systematic statistical analyses of the crystallographic data. The compound was further characterised by powder X-ray diffraction techniques, IR and Raman spectroscopy, and by elemental and thermal analyses (thermogravimetric analysis and differential scanning calorimetry).

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Section: Dmentioning

confidence: 99%