نتایج جستجو برای: nitro phenol
تعداد نتایج: 28928 فیلتر نتایج به سال:
In the title adduct, C(6)H(4)Cl(3)N·C(6)H(3)N(3)O(7), the two benzene rings are almost coplanar, with a dihedral angle of 1.19 (1)° and an inter-ring centroid-centroid separation of 4.816 (2) Å. The crystal structure is stabilized by inter-molecular N-H⋯O(nitro) hydrogen bonds, giving a chain structure. In addition, there are phenol-nitro O-H⋯O inter-actions.
The aromatic ring of the title compound, C(6)H(3)ClN(2)O(5), is almost planar (r.m.s. deviation = 0.007 Å); one nitro substituent is nearly coplanar with the ring [dihedral angle = 3(1)°], whereas the other is twisted [dihedral angle = 36 (1)°]. The phenol OH group is intra-molecularly hydrogen bonded to the nitro group that is coplanar with the ring, generating an S(6) graph-set motif.
Novel tetrasubstituted pyrazole derivatives bearing a nitro substituent on their A-phenol ring were synthesized and their binding affinity towards the estrogen receptor (ER) subtypes ERalpha and ERbeta was determined. Among compounds tested, the 2-nitrophenol derivative 5c was found to bind satisfactorily to both estrogen receptor subtypes (RBAalpha=5.17 and RBAbeta=3.27). In general, the intro...
In the title 1:1 adduct, C6H5NO3·C6H5NO2, both mol-ecules are almost planar (r.m.s. deviations for the non-H atoms = 0.027 and 0.023 Å for 4-nitro-phenol and 2-carboxyl-atopyridinium, respectively). The pyridine mol-ecule crystallizes as a zwitterion (nominal proton transfer from the carb-oxy-lic acid group to the N atom in the ring). In the crystal, inversion dimers of the zwitterions linked b...
Five gallium(III) complexes described as [Ga(III)(LX)2]ClO4, where (LX)- is the deprotonated form of a series of asymmetric ligands containing pyridine and 4,6-substituted phenol moieties, were synthesized and characterized by spectroscopic and spectrometric methods. Phenol substituents encompass the electron-withdrawing and electron-donating methoxy (1), nitro (2), chloro (3), bromo (4), and i...
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Recently almost all of the analytical methods have been used for analyzing and detecting of explosives, because of their importance in demining and unexploded ordnances operations. Fluorescence technique is one of the analytical methods. The unique features of this method caused to lots of researches in the mentioned applications. In present study, the fluorophores such as pyrene, phenol red, m...
Alkyl-substituted phenolic pyrazoles such as 4-methyl-2-[5-(n-octyl)-1H-pyrazol-3-yl]phenol (L2H) are shown to function as Cu-extractants, having similar strength and selectivity over Fe(iii) to 5-nonylsalicylaldoxime which is a component of the commercially used ACORGA® solvent extraction reagents. Substitution in the phenol ring of the new extractants has a major effect on their strength, e.g...
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