proton mult CDCl3(CD3)2CO(CD3)2SO C6D6CD3CN CD3OD D2O solvent residual peak7.26 2.05 2.507.16 1.94 3.31 4.79 H2O s 1.56 2.84a 3.33a0.40 2.13 4.87 acetic acid CH3s 2.10 1.96 1.91 1.55 1.96 1.99 2.08 acetone ...
常用NMR实验
The solvent chemical shifts3 were obtained from the spectra containing the solutes, and the ranges of chemical shifts (2) I.e., the signal of the proton for the isotopomer with one less deuterium than the perdeuterated material, e.g., CHCl3 in CDCl3 or C6D5H in C6D6. Except for ...
showtheirdegreeofvariability.Occasionally,inordertodistinguishbetweenpeakswhoseassignmentwasambiguous,afurther1-2µLofaspecificsubstratewereaddedandthespectrarunagain.Table1.1HNMRDataprotonmultCDCl3(CD3)2CO(CD3)2SOC6D6CD3CNCD3ODD2Osolventresidualpeak7.262.052.507.161.943.314.79H2Os1.562.84a3.33a0.402.134.87ac...
Whoops, that's water in CDCl3. The solvent peak is the one at 7.257 Logged Babcock_Hall Chemist Sr. Member Posts: 5714 Mole Snacks: +330/-24 Re: 1H nmr assistance « Reply #6 on: March 29, 2015, 06:07:42 PM » Quote from: doelling on March 28, 2015, 04:45:03 PM Ma...
(3H, s, OCH38), 3.69 (3H, s, OCH34′), 3.64 (3H, s, COOCH32), 3.49 (3H, br s, H5′′′ and H6′′′), 3.43-3.47 (1H, overlapped, H3a′′′), 3.45 (3H, s, OCH32′′′). 13C NMR (CDCl3, 125 MHz): δC 170.6 (s, COCH32), 160.6 (s, C4a), 160.0 (s,...
CDCl3 (CD3)2CO (CD3)2SO C6D6 CD3CN CD3OD D2O solvent residual peak 7.26 2.05 2.50 7.16 1.94 3.31 4.79 H2O s 1.56 2.84a 3.33a 0.40 2.13 4.87 acetic acid CH3 s 2.10 1.96 1.91 1.55 1.96 1.99 2.08 acetone CH3 s 2.17 2.09 2.09 1.55 2.08 2.15 2.22 acetonitrile CH3 s 2.10 2.05 2.07 ...
The 500 MHz 1H NMR spectra acquired with CDCl3 as solvent show two individual peaks at -0.30 and 0.60 ppm for the methylene protons of the cyclopropane ring. Assignments were made with the aid of 2D correlations. In accordance with previous literature, the upfield signal is assigned to the ...
1. NMR溶剂和杂质化学位移表
(CH3)4Si=TMS=0.00ppm(singlet)CDCl3(solvent)=77.0ppm(triplet)RCH30–40RCH2Cl35–80benzenering110–160RCH2R15–55R3COH40–80C=Oester160–180R3CH20–60R3COR40-80C=Oamide165–180RCH2I0–40RC CR65–85C=Ocarboxylicacid175–185RCH2Br25-65R2C=CR2100-150C=Oaldehyde,ketone180–21013CNMR谱...