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Journal of Molecular Structure
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Abstract An X-ray study was conducted on tris(trifluoroacetylacetonato)-manganese(III). The two different molecules in the unit cell exhibit a distorted octahedral geometry and moderate compression Jahn–Teller distortion respectively. A number of F⋯H and F⋯F intermolecular interactions were observed in the packing of the crystals in the solid state. The crystal packing effects could lead to the observed compressed Jahn–Teller distortion, instead of the expected elongation Jahn–Teller distortion....
#1Niloufar SafariH-Index: 1
#2Farhad ShiriniH-Index: 27
Last.Hassan TajikH-Index: 10
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Abstract In current study, a new DABCO based tetra cationic ionic liquid, formulated as [C4(H-DABCO)2][HSO4]4 is easily prepared and characterized using FT-IR, 1H NMR,13C NMR, TGA, and DTG analysis, and also pH-metric titration method. In continue, the efficiency of the prepared catalyst in the acceleration of the synthesis of 2H-indazolo[2,1-b]phthalazine-trione and [ 1 , 2 , 4 ]triazoloquinazolinone derivatives, is investigated. Simple experimental procedure, using available and low-cost start...
#1Fahad M. Almutairi (University of Tabuk)H-Index: 3
#2Mohammad Rehan Ajmal (University of Tabuk)
Last.Rizwan Hasan Khan (AMU: Aligarh Muslim University)H-Index: 41
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Abstract Fluorescence and circular dichroism spectroscopic techniques and molecular docking were used to study binding of azelastine with human serum albumin (HSA). Time resolve fluorescence spectroscopy results indicated that the quenching mechanism is dynamic. Fluorescence quenching results demonstrated that the binding of azelastine to HSA is weak, binding reaction is spontaneous. There is fluorescence energy transfer from tryptophan of HSA to bound azelastine. 2.34 nm is the binding distance...
#1Miguel Morales-Toyo (University of Zulia)H-Index: 3
#2Néstor CubillánH-Index: 8
Last.Jelen Restrepo (IVIC: Venezuelan Institute for Scientific Research)H-Index: 1
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ABSTRACT The compound 4-hydrazinobenzoic acid hydrochloride (4-HBA), C7H9O2.Cl, has been synthesized and characterized by FT-IR spectroscopy and X-ray diffraction. The compound crystallizes as colourless needles in a triclinic system, space group P¯1 (Z=2), and cell parameters a = 3.7176 (4) A, b = 5.9133 (4) A, c = 19.3631 (13) A, α = 87.841 (6), β = 88.924 (6), γ = 80.203 (6), V = 419.13 (6) A3. The component ions are linked by a combination of O-H...O, N-H...N and N-H...Cl hydrogen bonds to f...
#1Ramesh Golla (Tumkur University)
#2P. Raghavendra Kumar (Tumkur University)H-Index: 3
Last.G. Nagaraju (Siddaganga Institute of Technology)
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Abstract Four new 4′-dimethoxyphenyl-(2,6-di-2-pyrazinyl) pyridines (1–4) were synthesised by a facile one-pot method using 2-acetylpyrazine and n,n’-dimethoxybanzaldehydes. All compounds (1–4) were characterised by 1H and 13C{1H} NMR, and FT-IR spectroscopy. The molecular structure of compounds 1, 2, and 3 was also confirmed by single crystal X-ray diffraction. There exists CH ⋯ N, CH ⋯ O and C ⋯ C aromatic stacking type of intermolecular secondary interactions which resulted into supramolecula...
#2Hassan Noukrati (Cadi Ayyad University)
Last.Allal Barroug (Cadi Ayyad University)
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Abstract Design of novel phosphorus apatites, K2Pb6Zn2(PO4)6 and K2Pb4Ca4(PO4)6, zinc hydroxyapatite Ca8Zn2(PO4)6(OH)2, as well as hydroxyapatite Ca10(PO4)6(OH)2, and its corresponding calcined powder were conducted by means of two different synthesis protocols, i.e. solid state and wet chemical methods. The prepared materials adopt P63/m (No 176) as a space group. Structural refinements for K2Pb6Zn2(PO4)6 and K2Pb4Ca4(PO4)6 lacunar apatites, and that for the calcined hydroxyapatite, were perfor...
Abstract The inhibitory effect of nicotinamide on the corrosion of aluminum in 0.1 M NaCl and 0.1 M NaOH aqueous solutions was investigated in this study for the first time. In this study, the inhibitory effect of nicotinamide on corrosion of aluminum in 0.1 M NaCl and 0.1 M NaOH aqueous solutions was investigated. Since nicotinamide has nitrogen and oxygen atoms with unpaired electrons in its structure, it has been chosen with the idea that it may be a good inhibitor candidate. Nicotinamide is ...
#1P. T. Taslı (Pamukkale University)H-Index: 1
#2Çiğdem Karabacak Atay (Mehmet Akif Ersoy University)H-Index: 3
Last.Tahir Tilki (Süleyman Demirel University)H-Index: 7
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Abstract Azo dyes are organic compounds, which contain the coloring azo function (N N-) and are used in the production of colored materials and materials. It is supported by the scientific researches widely used for the coloring of all the materials and materials presented on the shelf. The properties of azo dyes based materials considered in this work have been investigated by experimental measurements such as FT-IR, UV and NMR spectroscopies. The absorption wavelengths of the title compounds i...
#1Zhen-Yuan Yang (SWUST: Southwest University of Science and Technology)
#2Daqiang Wu (SWUST: Southwest University of Science and Technology)H-Index: 1
Last.Su-Yuan Xie (Ha Tai: Xiamen University)H-Index: 18
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Abstract As Al3+ is detrimental both to human and other organisms, a simple sensor, acylhydrazone AhzF, is synthesized in one step and its structure is confirmed by single crystal X-ray diffraction. AhzF shows specific fluorescence turn-on response for Al3+ over other metal ions at UV 365 nm, observed by naked-eyes. Its detection limit can reach to 1.11 × 10−9 M in ethanol. Meanwhile, AhzF at low concentration can detect Al3+ with excellent interference resistance to typical disturbing metal ion...
#1İlker Polatoğlu (Celal Bayar University)H-Index: 2
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Abstract In this study, the synthetic active site model of tyrosinase enzyme's “(His3)Cu..OH..Cu(His3) arrangement” is constituted by applying the density functional theory (DFT) to reveal the enzymatic conversion of catechol in molecular basis. This is the first time the binding mechanisms of catechol in relation to the enzyme active site (met-tyrosinase) in a vacuum environment, explicit water, and solvent (ethanol, acetone)/water mixture have been studied using the DFT. The theoretical result...
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