分析:图1是未水化硅酸盐水泥的Si-NMR图谱,图谱中主要在化学位移为-71ppm左右存在一个较为尖锐的峰,在此位移的峰主要为孤立的岛状硅氧四而体结构·一般此处存在三个谱峰,分别为70ppm左右71ppm左右以及73ppm左右前两者属于水泥中单矿C3S的化学位移,后者属于C2S的化学位移。 10: 19 F 对于医药小分子,大分子分析...
1H NMR Spectroscopy is a technique that provides detailed information about the structure of molecules by identifying almost all protons of organic constituents in a sample through their well-defined chemical shifts. AI generated definition based on: Microchemical Journal, 2020 ...
R. P. Zuiderweg, "Heteronuclear Three-Dimensional NMR Spectroscopy. Natural Abundance 13Chemical Shift Editing of 1H-1H COSY Spectra", J. Am. Chem. Soc. 1989, 111, 770-772.Fesik, SW, Gampe, RT, Zuiderweg, ERP (1989) Heteronuclear 3-Dimensional NMR-spectroscopy––natural abundance c-13...
ChemicalBook Provide Triamcinolone acetonide(76-25-5) 1H NMR,IR2,MS,IR3,IR,1H NMR,Raman,ESR,13C NMR,Spectrum
1HNMR 13CNMR IR1 IR2 400 MHz in DMSO-d6 1H NMR 399.65 MHz C24 H31 F O6 0.036 g : 0.5 ml DMSO-d6 triamcinolone acetonide Assign. Shift(ppm) A 7.286 B 6.236 C 6.022 D 5.40 E 5.14 F 4.909 G *1 4.531 J 4.187 K *1 4.074 L *2 2.633 M 2.45 N *2 2.340 P *3 2.004...
The NMR spectra of the PRB studied in the presence of β-CD are fully assigned and interpreted by means of COSY spectrum for the unambiguous assignment of guest aromatic ring protons. The parallel interpretation of β-CD chemical shift changes and dipolar contacts, with the aid of 2D ROESY, ...
High resolution probe taking 1H NMR measurements. It is sensitive, versatile and features a broadband frequency channel.
氢氢相关谱，反映的是H-C-C-H这种结构单元两个氢的相关关系。
ChemicalBook Provide Sucrose(57-50-1) 1H NMR,IR2,MS,IR3,IR,1H NMR,Raman,ESR,13C NMR,Spectrum
1H NMR89.56 MHz C6H13N O0.04 ml : 0.5 ml CDCl3 N,N-diethylacetamide Assign. Shift(ppm) A 3.370 B 3.316 C 2.082 D 1.181 E 1.129 ASSIGNED BY C-H COSY. Hz ppm Int. 313.00 3.495 39 307.44 3.433 55 305.94 3.417 125 300.38 3.354 142 298.88 3.338 137 293.25 3.275 144 291.81 3.259 56...