The latter circumstance allows more precise values of low water contents to be realized owing to better integration of the (sup 31)P NMR peak. We have measured a series of model pyridine/H(sub 2)O mixtures by our technique and the results are summarized here. Also collected are similar ...
soluble in water. The quantity of residual Sr(OH)2·8H2O should be very small if there is any. In addition, STEM and EDX results indicate the presence of an amorphous material in the Y-rich area B (Supplementary Fig.3b, c), which is likely to be Y(OH)3. This amorphous material st...
S6). Additionally, the presence of a Ni0 peak at a binding energy of ~853 eV in Ni 2p spectra was also observed through XPS (Fig. 1d). Fig. 1: Characterization of the Ni(OH)2@CF and Ni(OH)2/Ni@CF. a TEM image and SAED pattern of Ni(OH)2@CF (scale bar: 500 nm). ...
The presence of intramolecular NH⋯O hydrogen bond was supported by X-ray and NMR data. The formation of imines was then studied in acetonitrile, and the acidity of OH/NH was found to significantly impact the thermodynamics and kinetics of imine reactions. Moreover, the reversibility of ...
Subsequentdifference-Fouriermapsdis-closeda weakbutwell-definedpositivepeak(04S)al-mostintermediatebetweentwo(001)mirror-relatedC03groups.Bond-distancecalculationsyieldeda stronglydis-tortedSi207unitwithunreasonableSi-Odistancesandangles.Inaddition,theatomicdisplacementparametersfor05and07wereeithernonpositivedefinite...
The amount of desired linear pseudopeptides in the mixtures ranged from 67 to 90% as determined by integration of HPLC peak areas. Comparative studies indicated: (i) racemization is not a problem in the synthesis of pseudopeptide mixtures containing the psi[CH2NH] surrogate; and (ii) ...
•異氰酸鹽(Isocyanates,-NCO)和羥基(-OH)化合物的反應性極高,但在有些應用上需要延遲異氰酸鹽與羥基的反應,並在適當的步驟下適放異氰酸鹽官能基。•封閉型異氰酸鹽是異氰酸鹽和帶有活性氫的封閉劑(BlockedagegntBH)反應生成一個弱鍵結的化合物;在一定溫度下釋放出(-NCO)官能基。Introduction•封閉型聚異...
Magnetic susceptibility data on Na-1 show that the VIV–RuIII pairs are coupled antiferromagnetically, with J 1=13K and J 23K. We did not detect any peak in our EPR measurements on Na-1, thus supporting the conclusion that Na-1 is diamagnetic in its ground state....
(a–c,e) SEM, (d) EDS, (f–h) the contact between the material and electrolyte, further promoting the ion transport. The diffraction patterns of X-ray diffraction (XRD) are displayed in Fig. 1b. For nanowires sample, the critical position of the peak at about 1h2y.d3r°o, x3...
The efficient use of renewable X/γ-rays or accelerated electrons for chemical transformation of CO2 and water to fuels holds promise for a carbon-neutral economy; however, such processes are challenging to implement and require the assistance of catalys