Hans-Jrg SchneiderMangel S. MalikShri Nivas RastogiJohn Wiley & Sons, Ltd.Magnetic Resonance in ChemistryAgrawal, P.K., H.-J. Schneider, M.S. Malik, and S.N. Rastogi: Stereochemical and Carbon-13 NMR Investigations, 32:Carbon-13 NMR Shifts and Conformations of Substituted Indans. Org. ...
13C NMR of β-AlcoxyvinylketonesSubstituent Effects13C NMR of Trisubstituted alkenesThis work presents the evaluation by empirically derived equations for the substituent effect (±, , , ) on the 13C NMR chemical shifts for C-1, C-2, C-3 and C-4 in -alcoxyvinylhalomethylketones 1ah ...
(Peking), People's Republic of China *Department of Polymer Chemistry, Tokyo Institute of Technology, 12-1 Ookayama 2-chome, Meguro-ku, Tokyo 152, Japan (Received April 15, 1983) ABSTRACT: 13C NMR chemical shifts were determined for the methyl carbons in the various stereoisomers of ...
13C chemical shifts of tetramethylsilane (TMS) have been determined at infinite dilution in 16 solvents. As compared to the respective proton shifts, their magnitude is much higher and anisotropic shifts are of less significance. This is being discussed in view of the increasing use of TMS as ...
Theoretical studies on structures, 13C NMR chemical shifts, aromaticity, and chemical reactivity of finite-length open-ended armchair single-walled carbon ... The geometries, chemical shifts, aromaticity, and reactivity of finite-length open-ended armchair single-walled carbon nanotubes (SWCNTs) ...
3、Koichi, S.; Arisaka, M.; Koshino, H.; Aoki, A.; Iwata, S.; Uno, T.; Satoh, H. Chemical Structure Elucidation from13C NMR Chemical Shifts: Efficient Data Processing Using Bipartite Matching and Maximal Clique Algorithms. J. Chem. Inf. Model. 54, 1027–1035 (2014) ...
The 13C (133Cs) NMR shifts were obtained from the first moments, M1, of the 13C (133Cs) NMR spectra. The dashed vertical lines mark the onset temperatures at which M1 becomes suppressed in the superconducting state. At high pressure [(a), (c)], 1/T1T is suppressed at a slightly ...
Unusually large C NMR chemical shift differences between neutral and protonated glycocyamidines... Focuses on the observation of the unusually large C chemical shift differences between neutral and protonated glycocyamidine derivatives. Reference to the carbonyl resonance in the protonated form; Informatio...
Geometry optimization and gauge including atomic orbitals (GIAO) (13)C NMR chemical shifts in chloroform solvent calculated at the level of MPW1PW91/6-31G(d,p) were applied to przewalskins A (3) and B (4), which are novel diterpenoids with a 6/6/7 carbon ring skeleton. The good line...
~(13)CNMR化学位移 3) 13C NMR chemical shifts ~(13)CNMR 化学位移 补充资料:化学位移成像 化学位移成像 磁共振成像术语。 把处于不同分子结构内的质子产生的化学位移量用二维图像显示出来,使图像既包括了 说明:补充资料仅用于学习参考,请勿用于其它任何用途。