2 Boron-11 NMR. Coupling constantNuclear Magnetic Resonance (NMR) DataChemical Shifts and Coupling Constants for Boron-11 and Phosphorus-31This document is part of Subvolume A 'Chemical Shifts and Coupling Constants for Boron-11 and Phosphorus-31' of Volume 35 'Nuclear Magnetic Resonance (NMR) ...
2) coupling constant 偶合常数 1. The coupling constants between 19 F and 1H/ 13 C were determined accurately. 用1 H ,1 3CNMR和多种二维核磁共振谱表征了本系列化合物的结构 ,完成了1 H和1 3CNMR谱带的归属 ,测定了氟原子对各质子和碳原子的偶合常数 ,探讨了影响偶合常数大小的因素。 2. The...
31P NMR studies of human soleus and gastrocnemius show differences in theJγβ coupling constant of ATP and in intracellular free magnesium... S Widmaier,T Hoess,WI Jung,... - 《Magnetic Resonance Materials in Physics Biology & Medicine》 被引量: 7发表: 1996年 31P NMR studies of human ...
A similar increase is observed for the PC3 coupling in the complexes relative to that in the ligands (3JP-C lie within 14.1–15.0 Hz for ligands and 16.0–16.2 Hz for complexes). The 13C NMR data for the compounds are summarized in Table 5. These values compare well with ...
From the NMR data, the dimerization constant for 1H-pyrrolo[2,3-b]pyridine (1) has been determined to be 18.9 ± 10.3 mol 1−1 〈81JPC3181〉. 7.06.3.1.1.(ii) Furopyridines Proton NMR data for some parent furopyridines and a variety of derivatives are listed in Table 19. Some ...
The use of [1-13C]Gly-labeled silk fibroin and careful NMR observation made it possible to determine the coupling constant directly with an experimental error of ca. 0.1 Hz for silk protein. After correcting 3JC′,N-Cα-H for the doublet spacings in the case of overlapping components, ...
52、d mistakes involving chemical shift , coupling constant J, integration value and assignment have been researched in 20 recent SCI cited chemistry journals of our China including Taiwan district, finding that the mistakes have been very common and severe, which should be corrected and prevented ...
ChemInform Abstract: ZIRCONIUM‐91 NMR SPECTRUM OF TETRAKIS(TETRAHYDROBORATO)ZIRCONIUM: THE ZIRCONIUM‐HYDROGEN COUPLING CONSTANT AS A PROBE FOR A FAST INT... ChemInform Abstract: ZIRCONIUM‐91 NMR SPECTRUM OF TETRAKIS(TETRAHYDROBORATO)ZIRCONIUM: THE ZIRCONIUM‐HYDROGEN COUPLING CONSTANT AS A PROBE FOR...
The INEPT (insensitive nuclei enhanced by polarization transfer) experiment is similar to the DEPT experiment, except that it uses an evolution period to produce the appropriate condition for spectral selection that depends critically on the size of the coupling constant. The technique is therefore som...
The 77Se NMR spectrum of the selenurane 2·2PF6− showed two resonances at δ 535 and 830 ppm, and 77Se satellites in the proton-decoupled 77Se NMR gave a value of 200 Hz for the 1JSe–Se coupling constant <1996T10375>. The conformation is fixed as a boat form by transannular bon...