Crystal structure of (1-phenylbutane-1,3-dionato)(ethylene glycol)-sodium

1971 ◽  
pp. 1582 ◽  
Author(s):  
D. Bright ◽  
G. H. W. Milburn ◽  
Mary R. Truter
Keyword(s):  
Crystal Structure ◽  
Ethylene Glycol

The Effect of Water Content on the Formation of TiO2 Nanotubes in Ethylene Glycol

2010 ◽  
Vol 173 ◽  
pp. 102-105 ◽  
Author(s):  
Khairul Arifah Saharudin ◽  
Srimala Sreekantan
Keyword(s):  
Crystal Structure ◽  
Aspect Ratio ◽  
Ethylene Glycol ◽  
Water Content ◽  
Anatase Phase ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Degradation Of Methyl Orange ◽  
Scanning Electron

In this paper, anodization of Ti foil was carried out in ethylene glycol (EG) containing 5 wt% NH4F solution and 0 to 1.5 wt% of water at 50 V for 60 min. The pH of the bath was kept constant at ~pH7. The crystal structure was studied by X-Ray Diffraction (XRD) analysis, and the morphology was observed via field emission scanning electron microscopy (FESEM). TiO2 nanotube with aspect ratio of 100 was obtained in EG containing less than 1wt % water. The nanotubes wall was very smooth. Increasing the water content > 1wt % results in short nanotubes of approximately 6.2μm with aspect ratio of 62. As anodized, nanotubes were amorphous and annealed at 400 °C promote 100 % anatase phase. Photocatalytic activity of the nanotubes produced at different water content was also evaluated by the degradation of methyl orange and the detail of the observation was discussed thoroughly in this paper.

Magnetic Properties and Morphology of the Cobalt Particles Prepared in Different Liquid Solvent

2013 ◽  
Vol 749 ◽  
pp. 192-197
Author(s):  
Xue Min Huang ◽  
Quan Sheng Wang ◽  
Ying Liu ◽  
Xiu Chen Zhao ◽  
Shu Lai Wen
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Ethylene Glycol ◽  
Water System ◽  
Cubic Phase ◽  
Water Mixture ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
The Difference ◽  
Face Centered

The two kinds of flower-like ultrafine cobalt particles were prepared by reducing cobalt chloride (CoCl2·6H2O) with hydrazine hydrate (N2H4·H2O) under ultrasonic and microwave radiation, in which ethanol-water or ethylene glycol-water mixture was used as solvent. The morphology, crystal structure and magnetic properties of the as-prepared particles were characterized by scanning electron microscope (SEM), x-ray diffraction pattern (XRD) and vibrating sample magnetometer (VSM). The results show that the petals of the flower-like cobalt particles prepared in the ethanol-water system were dendritic, while the petals of the flower-like cobalt particles prepared in the ethylene glycol-water system were sword-like. The crystal structure of cobalt particles prepared in the two kinds of systems both consisted of hexagonal close-packed cubic phase and face-centered cubic phase, but the relative content was different. The saturation magnetization of the cobalt particles with dendritic petals and the cobalt particles with sword-like petals was the same approximately, but their coercivity was greatly different (the difference in value about 7184.14Am-1), which might be attributed to the magnetocrystalline anisotropy and shape anisotropy.

scholarly journals Crystal Structure of the putative tail fiber protein gp53 from the Acinetobacter baumannii bacteriophage AP22

2019 ◽  
Author(s):  
Lada V. Sycheva ◽  
Mikhail M. Shneider ◽  
Anastasia V. Popova ◽  
Rustam H. Ziganshin ◽  
Nikolay V. Volozhantsev ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ethylene Glycol ◽  
Acinetobacter Baumannii ◽  
Host Cell ◽  
Infection Process ◽  
Tail Fiber ◽  
Lytic Bacteriophage ◽  
Cell Binding ◽  
Tail Fiber Protein ◽  
Fiber Protein

AbstractThis report describes the structure of a putative tail fiber protein of the Acinetobacter baumannii bacteriophage AP22. The target host range of strictly lytic bacteriophage AP22 includes many clinical isolates of A. baumannii from hospitals in Chelyabinsk, Nizhny Novgorod, Moscow and St. Petersburg (Russia), but its host cell binding apparatus remains uncharacterized. Here, we report the crystal structure of the C-terminal fragment of AP22 gene product 53 (gp53) one of its two putative host cell-binding proteins. We show that gp53 forms a trimeric fiber and binds ethylene glycol and glycerol molecules that represent known surrogates of the oligosaccharide backbone. However, despite its structural similarities to other phage/virus host cell-binding fibers and its binding to small sugar-like molecules, gp53 did not inhibit AP22 infection and its role in the infection process remains unclear.

IMPURITY CONCENTRATION PROFILES IN ICE BY AN ANTHRONE METHOD

1960 ◽  
Vol 38 (3) ◽  
pp. 354-368 ◽  
Author(s):  
M. Smith ◽  
E. R. Pounder
Keyword(s):  
Crystal Structure ◽  
Refractive Index ◽  
Sodium Chloride ◽  
Ethylene Glycol ◽  
Impurity Concentration ◽  
Organic Liquid ◽  
Surface Concentration ◽  
Concentration Profiles ◽  
Concentration Peak ◽  
Second Peak

Solutions of sodium carboxymethyl cellulose (CMC), sodium chloride, ethylene glycol, and ethyl alcohol in water were prepared and frozen under controlled conditions. The ice in each case was divided into horizontal sections, melted, and the amount of each impurity measured. The organic liquid and salt concentrations were found from refractive index values using a dipping refractometer, and the CMC content, after treatment with an anthrone solution, was measured with a spectrophotometer. Developments in the anthrone method are described. Qualitative tests were also made by freezing solutions of soluble dyes.In the freezing of aqueous solutions of CMC and the dyes, rejection of the impurity is almost complete. When solutions of salt or alcohol or glycol in water, or of CMC and alcohol or glycol in water, are frozen a surface concentration peak and a second peak about 7 mm below the surface, corresponding to a previously observed discontinuity in the crystal structure of impure ice, are found. The ability of alcohol or glycol to carry CMC or a dye to places in the ice structure not available to them in the absence of the organic liquid is noted.

The crystal structure and characterization of 2-D and 3-D indium phosphates synthesized from a water/ethylene glycol mixed-solvent system

2012 ◽  
Vol 385 ◽  
pp. 39-44 ◽  
Author(s):  
Gen-Wu Ge ◽  
Yu-Xiang Hu ◽  
Mei-Pin Liu ◽  
Yi-Zhi Li ◽  
Hong-Bin Du ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ethylene Glycol ◽  
Mixed Solvent ◽  
Solvent System ◽  
Mixed Solvent System

scholarly journals Synthesis and crystal structure of triethylammonium hexabromidouranate(IV) dichloromethane monosolvate

2020 ◽  
Vol 76 (10) ◽  
pp. 1587-1590
Author(s):  
Holger Lars Deubner ◽  
Marcel Koester ◽  
Carsten von Haenisch ◽  
Florian Kraus
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Low Temperature ◽  
Ethylene Glycol ◽  
Network Structure ◽  
Three Dimensional ◽  
Uranium Atom ◽  
Synthesis And Crystal Structure ◽  
Dimensional Network ◽  
Solvent Molecules

Triethylammonium hexabromidouranate(IV) dichloromethane monosolvate, [(C2H5)3NH]2[UBr6]·CH2Cl2, was obtained in the form of dark-brown crystals from the reaction of uranium pentabromide with NEt3 and ethylene glycol in dichloromethane at low temperature. During the progress of the reaction, the reduction of uranium(V) to uranium(IV) was observed, whose associated oxidation product could not be identified. The uranium atom of the [UBr6]2– anion is coordinated by six bromido ligands in the shape of an octahedron. Between cations, anion and solvent molecules of crystallization, numerous C—H...Hal hydrogen-bond-like interactions are present, leading to a three-dimensional network structure.

Hydrothermal Synthesis of SnO2 Structures with Various Morphologies in the Presence of Different Alcoholic Co-Solvents

2016 ◽  
Vol 721 ◽  
pp. 87-91
Author(s):  
Kristaps Rubenis ◽  
Janis Locs
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Synthesis ◽  
Ethylene Glycol ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Solvothermal Process ◽  
Starting Solution ◽  
Structure Morphology ◽  
Synthesized Materials

The addition of certain co-solvents to the hydrothermal synthesis starting solution can greatly alter morphology and enhance different morphology dependent properties of the synthesized material. While ethanol is the most common co-solvent used for the synthesis of various SnO2 nano/microstructures by hydro/solvothermal process, it is not clear how the use of some other alcoholic co-solvents (for example, methanol or isopropanol) affect morphology and properties of SnO2, especially if synthesis is done under similar conditions as in the case of ethanol co-solvent. In the present study, we investigated how the use of various alcoholic co-solvents (methanol, ethanol, 2-propanol, ethylene glycol and glycerol) affects crystal structure, morphology and specific surface area of the hydrothermally synthesized SnO2. Additionally, sensitivity towards 100 ppm ethanol of the synthesized materials was tested. The formation of nanoparticles, rod-cluster structures and spherical SnO2 structures were observed depending on the alcoholic co-solvent used. The highest sensitivity (~22 at 250 °C) showed the material that was synthesized in the presence of ethanol co-solvent.

Crystal Structure Determination of Glycerol-Containing Lipids from Electron Diffraction Data. Use of Analog Compounds Based upon Configurational Isomers of Cyclopentane-1, 2, 3-TRIOL

1977 ◽  
Vol 35 ◽  
pp. 24-25
Author(s):  
Douglas L. Dorset ◽  
Anthony J. Hancock
Keyword(s):  
Crystal Structure ◽  
Electron Diffraction ◽  
Diffraction Data ◽  
Structure Determination ◽  
Crystal Surface ◽  
Coherent Scattering ◽  
Crystal Structure Determination ◽  
Electron Diffraction Data ◽  
Polar Group ◽  
Axis Orientation

Lipids containing long polymethylene chains were among the first compounds subjected to electron diffraction structure analysis. It was only recently realized, however, that various distortions of thin lipid microcrystal plates, e.g. bends, polar group and methyl end plane disorders, etc. (1-3), restrict coherent scattering to the methylene subcell alone, particularly if undistorted molecular layers have well-defined end planes. Thus, ab initio crystal structure determination on a given single uncharacterized natural lipid using electron diffraction data can only hope to identify the subcell packing and the chain axis orientation with respect to the crystal surface. In lipids based on glycerol, for example, conformations of long chains and polar groups about the C-C bonds of this moiety still would remain unknown.One possible means of surmounting this difficulty is to investigate structural analogs of the material of interest in conjunction with the natural compound itself. Suitable analogs to the glycerol lipids are compounds based on the three configurational isomers of cyclopentane-1,2,3-triol shown in Fig. 1, in which three rotameric forms of the natural glycerol derivatives are fixed by the ring structure (4-7).

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