Crystal structure of the C form of stearic acid

1971 ◽  
pp. 548 ◽  
Author(s):  
Viscardo Malta ◽  
Giancarlo Celotti ◽  
Roberto Zannetti ◽  
Adele Ferrero Martelli
Keyword(s):  
Crystal Structure ◽  
Stearic Acid

Preparation of Layered Potassium Titanate

2008 ◽  
Vol 368-372 ◽  
pp. 1463-1464 ◽  
Author(s):  
Lu Ting Yan ◽  
Wen Jie Si ◽  
Feng Teng ◽  
Yan Peng Zheng ◽  
Chun Ai Dai
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
Stearic Acid ◽  
Solid State Reaction ◽  
Potassium Titanate ◽  
Important Intermediate

Layered potassium titanate is an important intermediate in preparing titania nanosheets. Three methods including method of potassium stearate, method of stearic acid and method of high-temperature solid-state reaction were used to produce layered potassium titanate in this paper. XRD and SEM were used to characterize the crystal structure and shape. The result of experiments showed that method of potassium stearate was the most effective way to prepare the layered potassium titanate.

The Change in the Crystal Structure of Zinc Oxide in a Binary ε-Caprolactam–Stearic Acid Melt

2009 ◽  
Vol 36 (11) ◽  
pp. 19-22
Author(s):  
A.F. Puchkov ◽  
V.F. Kablov ◽  
E.V. Talbi ◽  
V.N. Arisova
Keyword(s):  
Crystal Structure ◽  
Zinc Oxide ◽  
Stearic Acid

scholarly journals A further X-ray investigation of long chain compounds (n-hydrocarbon)

1928 ◽  
Vol 120 (785) ◽  
pp. 437-459 ◽  
Keyword(s):  
Crystal Structure ◽  
Stearic Acid ◽  
Single Crystals ◽  
Cross Section ◽  
Structure Factor ◽  
Chain Structure ◽  
Practical Reasons ◽  
X Ray ◽  
Chain Compounds ◽  
Long Chain

In a previous paper the writer has outlined the crystal structure of a number of long-chain compounds. One of the main results of this work was to show that the crystal molecules (chains) in all these substances can be represented as rods of definite cross section, the crystals being built up of bundles of these rods packed close together. A closer examination of the X-ray photographs of stearic acid gave the clue to the chain structure, and led to a general formula for the structure factor. It was then announced that a more detailed investigation of stearic acid was to follow. The choice of stearic acid was dictated entirely by practical reasons, no other well developed crystals of other similar substances being available at that time. But as it was obviously more desirable to study first the prototype of the long chain compounds, namely, the normal hydrocarbon, efforts were first made to find single crystals of these substances. The search was unexpectedly successful, and the present paper describes an attempt to interpret the results of the X-ray examination of a single crystal of the hydrocarbon C 29 H 60 .

scholarly journals The Crystal Structure of the B-form of Stearic Acid

1978 ◽  
Vol 51 (9) ◽  
pp. 2456-2459 ◽  
Author(s):  
Midori Goto ◽  
Eiichi Asada
Keyword(s):  
Crystal Structure ◽  
Stearic Acid

Effect of surfactants on crystal structure modification of stearic acid

1982 ◽  
Vol 57 (3) ◽  
pp. 577-584 ◽  
Author(s):  
Nissim Garti ◽  
Edna Wellner ◽  
Sara Sarig
Keyword(s):  
Crystal Structure ◽  
Stearic Acid ◽  
Structure Modification

Structural insights for fatty acid binding in a Lys49-phospholipase A2: crystal structure of myotoxin II from Bothrops moojeni complexed with stearic acid

Biochimie ◽  
2005 ◽  
Vol 87 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Leandra Watanabe ◽  
Andreimar M. Soares ◽  
Richard J. Ward ◽  
Marcos R.M. Fontes ◽  
Raghuvir K. Arni
Keyword(s):  
Crystal Structure ◽  
Fatty Acid ◽  
Stearic Acid ◽  
Phospholipase A2 ◽  
Fatty Acid Binding ◽  
Bothrops Moojeni ◽  
Structural Insights

scholarly journals Influence of synthesis method on molybdenum carbide crystal structure and catalytic performance in stearic acid hydrodeoxygenation

2019 ◽  
Vol 241 ◽  
pp. 81-88 ◽  
Author(s):  
Luana Souza Macedo ◽  
Ricardo R. Oliveira ◽  
Tomas van Haasterecht ◽  
Victor Teixeira da Silva ◽  
Harry Bitter
Keyword(s):  
Crystal Structure ◽  
Stearic Acid ◽  
Molybdenum Carbide ◽  
Synthesis Method ◽  
Catalytic Performance

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).

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

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