Crystal Effects on Mesobilirubin: A Combined NMR Spectroscopic and Density Functional Theory Study
Crystal Effects on Mesobilirubin: A Combined NMR Spectroscopic and Density Functional Theory Study
复制标题
晶体对中胆红素的影响:核磁共振波谱和密度泛函理论相结合的研究
DOI:
10.1111/php.12734
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发表时间:
2017
影响因子:
3.3
通讯作者:
Franz Mark
中科院分区:
文献类型:
--
作者:
Chen Song;Jörg Matysik;Franz Mark
We report solid‐state NMR investigations of crystal effects in powdered mesobilirubin‐IXα, an open‐chain tetrapyrrole that is structurally related to bilirubin‐IXαbut hydrogenated at the 3‐ and 18‐vinyl groups.13C and15N cross‐polarization magic‐angle spinning (CP/MAS) NMR experiments were performed on the compound at natural abundance. To facilitate the spectral analysis, density functional calculations were carried out at the B3LYP/6‐311G(d,p) level of theory, using an enneameric cluster to simulate the solid. The1H,13C and15N chemical shift data calculated for the enneamer are in a good agreement with those observed in the experimental spectra, and the relative order of the calculated resonances was thus used to confirm the tentative assignments obtained mainly from the heteronuclear correlation spectra. The observed signal splittings of a small subset of the13C resonances in the peripheral regions of the two terminal rings provide evidence for microcrystalline heterogeneity of the powdered compound.
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影响因子:
2.2
作者:
N. van Eikema Hommes;T. Clark
通讯作者:
T. Clark
DOI:
--
发表时间:
1999
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
Lokstein;Steglich;Hess
通讯作者:
Hess
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
中村賀美;竹内孝江
通讯作者:
竹内孝江
影响因子:
3.3
作者:
A. Mcdonagh
通讯作者:
A. Mcdonagh
影响因子:
3.6
作者:
G. Oakes;J. Bend
通讯作者:
J. Bend