Solid products of the reaction of lanthanum(III) nitrate with potassium hexa(isothiocyanato)chromate(III) in an aqueous solution: X-ray diffraction analysis

2008 ◽  
Vol 53 (7) ◽  
pp. 1115-1120 ◽  
Author(s):  
E. V. Cherkasova ◽  
E. V. Peresypkina ◽  
A. V. Virovets ◽  
E. S. Tatarinova ◽  
T. G. Cherkasova
Keyword(s):  
Aqueous Solution ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Synthesis, characterization and structure of the Bis(methyl-cyclopentadienyl)vanadium(IV) carboxylates

2005 ◽  
Vol 3 (1) ◽  
pp. 157-168 ◽  
Author(s):  
Jaromír Vinklarek ◽  
Jan Honzíĉek ◽  
Ivana Císařová ◽  
Martin Pavliŝta ◽  
Jana Holubová
Keyword(s):  
Aqueous Solution ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Carboxylic Acids ◽  
X Ray Diffraction ◽  
Monocarboxylic Acids ◽  
X Ray ◽  
Different Types ◽  
Chelate Compounds ◽  
Parameter Values

AbstractThe 1,1’-dimethylvanadocene dichloride ((C5H4CH3)2VCl2) reacts in aqueous solution with various carboxylic acids giving two different types of complexes. The 1,1’-dimethylvanadocene complexes of monocarboxylic acids (C5H4CH3)2V(OOCR)2 (R=H,CCl3, CF3, C6H5) contain two monodentate carboxylic ligands, whereas oxalic and malonic acids act as chelate compounds of the formula (C5H4CH3)2V(OOC-A-COO) (A=−, CH2). The structure of the (C5H4CH3)2 V(OOCCF3)2 complex was determined by single crystal X-ray diffraction analysis. The isotropic and anisotropic EPR spectra of all the complexes prepared were recorded. The obtained EPR parameter values were found to be in agreement with proposed structures.

Synthesis of Nanosized Pseudoboehmite and γ-Al2O3 by Control Precipitation Method

2013 ◽  
Vol 684 ◽  
pp. 46-52 ◽  
Author(s):  
Zhou Qing Jiang ◽  
Hong Wen Ma ◽  
Jing Yang ◽  
Le Wang
Keyword(s):  
Aqueous Solution ◽  
Diffraction Analysis ◽  
Sodium Sulfate ◽  
Ageing Time ◽  
Precipitation Method ◽  
Al2o3 Nanoparticles ◽  
X Ray Diffraction ◽  
Reaction Conditions ◽  
X Ray

Nanosized pseudoboehmite particles were synthesized by the precipitation of sodium sulfate and ammonia in aqueous solution at 70°C. After calcinations, the pseudoboehmite could successfully transfer to γ-Al2O3 nanoparticles while retaining their previous morphology. The influence of the reaction conditions on formation of pseudoboehmite and γ-Al2O3 had been researched in detail. The X-ray diffraction analysis showed that nanosized crystalline pseudoboehmite was formed at pH 8-8.5 after ageing 2 hours. Utilization of surfactant(PEG1000) would produce finer nanoparticles with well-dispersion. With the ageing time or the surfactant amount increasing, the morphology of the resulting particles transformed from spherical to fibrous

Effect of Electrolyte on Micro Arc Oxidation Coating of Al-2014 Alloy

2018 ◽  
Vol 1148 ◽  
pp. 159-164 ◽  
Author(s):  
M.P. Shankar ◽  
R. Sokkalingam ◽  
K. Sivaprasad ◽  
Veerappan Muthupandi
Keyword(s):  
Aqueous Solution ◽  
Diffraction Analysis ◽  
Aluminium Alloy ◽  
Process Parameters ◽  
Coating Thickness ◽  
X Ray Diffraction ◽  
X Ray ◽  
Porous Layers ◽  
Micro Arc Oxidation ◽  
Phosphate Electrolyte

Micro Arc Oxidation (MAO) coating was performed on Al-2014 aluminium alloy in aqueous solution of silicate, phosphate and hybrid electrolytic environments. The MAO thickness was measured around 5-15 μm, in which significant thickness of both dense and porous layers were identified. A combination of nanocrystalline α-Al2O3and Υ-Al2O3 was identified in the MAO coating using X-ray diffraction analysis. The thickness and morphology of the coating, which is analyzed using SEM are different for different MAO process parameters and it was found that the MAO coating prepared in phosphate electrolyte is giving a better coating with higher coating thickness, minor pore size and better adherence.

Structure of iron (II) and cobalt (II) bromide complexes in aqueous solution by X-ray diffraction analysis

1984 ◽  
Vol 13 (7) ◽  
pp. 505-516 ◽  
Author(s):  
Mitsuyoshi Ichihashi ◽  
Hisanobu Wakita ◽  
Isao Masuda
Keyword(s):  
Aqueous Solution ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals The Structure of Nickel(II) Bromide in Highly Concentrated Aqueous Solution by X-Ray Diffraction Analysis

1982 ◽  
Vol 55 (3) ◽  
pp. 817-821 ◽  
Author(s):  
Hisanobu Wakita ◽  
Mitsuyoshi Ichihashi ◽  
Takeharu Mibuchi ◽  
Isao Masuda
Keyword(s):  
Aqueous Solution ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray

Structural Study of a new Compound Based on Acid 1,4-Cyclohexanedicarboxylic (1,4-CDC)

2010 ◽  
Vol 6 (1) ◽  
pp. 891-896
Author(s):  
Manel Halouani ◽  
M. Dammak ◽  
N. Audebrand ◽  
L. Ktari
Keyword(s):  
Aqueous Solution ◽  
Water Molecules ◽  
Carboxyl Group ◽  
X Ray Diffraction ◽  
Compound I ◽  
Unit Cell Parameters ◽  
Monoclinic System ◽  
X Ray ◽  
Cell Parameters ◽  
Cyclohexanedicarboxylic Acid

One nickel 1,4-cyclohexanedicarboxylate coordination polymers, Ni2 [(O10C6H4)(COO)2].2H2O  (I), was hydrothermally synthesized from an aqueous solution of Ni (NO3)2.6H2O, (1,4-CDC) (1,4-CDC = 1,4-cyclohexanedicarboxylic acid) and tetramethylammonium nitrate. Compound (I) crystallizes in the monoclinic system with the C2/m space group. The unit cell parameters are a = 20.1160 (16) Å, b = 9.9387 (10) Å, c = 6.3672 (6) Å, β = 97.007 (3) (°), V= 1263.5 (2) (Å3) and Dx= 1.751g/cm3. The refinement converged into R= 0.036 and RW = 0.092. The structure, determined by single crystal X-ray diffraction, consists of two nickel atoms Ni (1) and Ni (2). Lots of ways of which is surrounded by six oxygen atoms, a carboxyl group and two water molecules.

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