Zeolite ZSM-5 with a high silicon/aluminium [Si]/[Al] ratio containing 3 to 4 p -nitroaniline ( p -NA) molecules per unit cell has been studied by solid-state NMR. 29 Si NMR spectral change and detection of the 29 Si cross polarization (CP) signals after the incorporation of p -...
CAS编号: 100-01-6 分子式: C6H6N2O2 分子量: 138.12 Beilstein号: 508690 EC号: 202-810-1 MDL号: MFCD00007858 PubChem编号: 7475 货号(SKU) 包装规格 是否现货 价格 数量 N111641-100g 100g 现货 现价: ¥50.90 +- 添加到购物车 N111641-500g 500g 现货 现价: ¥206.90 +- ...
The frequency shift of the NH 2 stretching mode correlated with the degree of hydrogen bonding between the solvent molecules estimated from NMR measurements [Hoffmann M. M.; , M. S. J. Phys. Chem. B. 1998, 102, 263]. The existence of intermolecular hydrogen bonding around the NH 2 ...
The complex dynamics of poly(n-alkyl methacrylates) is studied by advanced C-13 NMR spectroscopy as well as mechanical and dielectric relaxation. Extended ... M Wind,R Graf,S Renker,... - 《Macromolecular Chemistry & Physics》 被引量: 34发表: 2010年 Intramolecular charge transfer and dielectr...
An analysis of the geometry of N,N-dimethyl-4-nitroaniline and its 3,5- and 2,6-dimethyl derivatives presents structural evidence against the classical concept of through-resonance(throughconjugation), according to which the most important contribution is the quinoid structure with full charge transf...
Dynamics of p-nitroaniline (pNA) in FSM-type mesoporous silicas was investigated by means of 2H and 13C solid-state NMR. Deuterated pNA (pNA-d) was loaded to FSM-16 (FSM) and modified FSM samples which were prepared by reactions of FSM with trimethylethoxysilane (C1FSM), n-...
ESR studies show the formation of a nitro and an amino free radical, which are formed by photoinduced proton transfer from the amine to the nitro group. The amine radical is the active species that adds to the monomer. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Ch...
The functional polystyrenes, namely XPSt (P2) and (PS)2-CHCOOCH2CH2OH, designated as X-PSt and coded P3 and their post-derivatives, namely, DXPSt (P4) and DX-PSt (P5) respectively were characterized by IR, NMR and UV spectroscopies, gel permeation chromatography (GPC) and ...
The formation of the complex has been confirmed by UV–Vis, FT-IR, 1 H NMR, and TGA/DTA techniques. The structure of the CT complex is [(BZH) + (PA) ], and a general mechanism for its formation is also proposed. Keywords Charge transfer complex Benzamide (BZ) Picric acid (PAH) ...
The UV/vis and 1 H NMR spectra are discussed. A barrier of G = 15.3 ± 0.2 kcal/mol for rotation about the Ar-N bond has been determined for N -methoxy-2-cyano-4,6-dinitroaniline. The supramolecular complex [18-C-6 ··· K] + A - derived from 2 has been N -methylated with...