scholarly journals Crystal structure of 2-(pyridin-2-ylamino)pyridinium chloride dibenzyldichlorostannane, [C10H10N3]Cl, C14H14Cl2Sn

2020 ◽  
Vol 235 (6) ◽  
pp. 1515-1517
Author(s):  
See Mun Lee ◽  
Kong Mun Lo ◽  
Edward R.T. Tiekink
Keyword(s):  
Crystal Structure ◽  
Pyridinium Chloride

AbstractC24H24Cl3N3Sn, triclinic, P1̄ (no. 2), a = 10.2029(2) Å, b = 10.6071(2) Å, c = 12.1389(3) Å, α = 71.395(2)°, β = 82.665(2)°, γ = 73.340(2)°, V = 1191.84(5) Å3, Z = 2, Rgt(F) = 0.0175, wRref(F2) = 0.0447, T = 100(2) K.

Crystal structure of pyridinium tetrachloroferrate-(III) sesqui (pyridinium chloride)

1982 ◽  
Vol 64 ◽  
pp. L55-L57 ◽  
Author(s):  
Bruce D. James ◽  
Mary B. Millikan ◽  
Maureen F. Mackay
Keyword(s):  
Crystal Structure ◽  
Pyridinium Chloride

scholarly journals Crystal Structure of 4-(2-chloroacetamido)pyridinium chloride monohydrate, C7H10Cl2N2O2

2017 ◽  
Vol 232 (1) ◽  
pp. 91-92
Author(s):  
Mostafa M. Ghorab ◽  
Mansour S. Alsaid ◽  
Hazem A. Ghabbour
Keyword(s):  
Crystal Structure ◽  
Pyridinium Chloride ◽  
Chloride Monohydrate

AbstractC7H10Cl2N2O2, monoclinic, P21/c (no. 14), a = 9.8798(3) Å, b = 13.9285(5) Å, c = 7.3161(3) Å, β = 100.512(3)°, V = 989.88(6) Å3, Z = 4, Rgt(F) = 0.0475, wRref(F2) = 0.1178, T = 296 K.

Orthoamide, LXVII [1]. Bis(diformylamino)methan – ein neues leistungsfähiges Formylierungsmittel für aromatische Verbindungen / Orthoamides, LXVII [1]. Bis(diformylamino)methane – a New Efficient Formylating Reagent for Aromatic Compounds

2008 ◽  
Vol 63 (4) ◽  
pp. 395-406 ◽  
Author(s):  
Willi Kantlehner ◽  
Ernst Anders ◽  
Jochen Mezger ◽  
Edmont V. Stoyanov ◽  
Ralf Kreß ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Lewis Acid ◽  
Structure Determination ◽  
Aromatic Compounds ◽  
Lewis Acids ◽  
Crystal Structure Determination ◽  
Pyridinium Chloride ◽  
Guanidinium Salt

AbstractFormaldehyde reacts with diformamide (10) to give N-(hydroxymethyl)diformamide (11), which upon treatment with thionylchloride yields N-(chlormethyl)diformamide (12) together with small amounts of oxydimethylenebis(diformamide) (13). Various diformylamine derivatives, such as diformylaminomethyl formiate (14), diformylaminomethylisothiocyanate (15) and the N-diformylaminomethylated guanidinium salt 16, can be prepared from 12. Bis(diformylamino) methane (7) can be obtained by the reaction of sodium diformamide (8) with either 1-(chloromethyl)pyridinium chloride (9) or N-(chloromethyl)diformamide (12) in acetonitrile. The action of tris(chloromethyl) amine (18) on sodium diformamide (8) affords tris(diformylaminomethyl)amine (19). The constitution of the compounds 7, 11 and 19 was confirmed by crystal structure determination. The nature of the products from the reactions of aromatic compounds with 12 depends on the Lewis acid which is used as activator. Thus the N-benzylformamides 20a, b can be obtained from toluene and mesitylene and 12/BF3-ether, whereas 1,2,4-trimethoxybenzene is formylated by 12/AlCl3 to give the aldehyde 22. Interestingly enough, a novel and efficient formylating reagent resulted from these investigations: bis(diformylamino)methane (7), which can be activated by Lewis acids, e. g. AlCl3. The scope of this procedure is comparable with that of the Olah-formylation method (formylfluoride/BF3).

Anion Binding Induces Helicity in a Hydrogen-Bonding Receptor: Crystal Structure of a 2,6-Bis(anilinoethynyl)pyridinium Chloride

2009 ◽  
Vol 9 (10) ◽  
pp. 4247-4249 ◽  
Author(s):  
Charles A. Johnson ◽  
Orion B. Berryman ◽  
Aaron C. Sather ◽  
Lev N. Zakharov ◽  
Michael M. Haley ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Anion Binding ◽  
Pyridinium Chloride

4-(Hydroxyaminocarbonyl)pyridinium chloride

2007 ◽  
Vol 63 (3) ◽  
pp. o1515-o1517 ◽  
Author(s):  
Irina A. Golenya ◽  
Matti Haukka ◽  
Igor O. Fritsky ◽  
Elźbieta Gumienna-Kontecka
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Pyridinium Chloride

The crystal structure of the title salt, C6H7N2O2 +·Cl−, consists of N-hydroxyisonicotinamidium cations and Cl− anions linked through N—H...Cl, O—H...Cl and N—H...O hydrogen bonds into layers arranged parallel to the (010) plane.

scholarly journals Crystal structure of 2-{[2-(3-phenylallylidene)hydrazin-1-yl]thiocarbonylsulfanylmethyl}pyridinium chloride

2014 ◽  
Vol 70 (11) ◽  
pp. o1207-o1208 ◽  
Author(s):  
May Lee Low ◽  
Thahira Begum S. A. Ravoof ◽  
Mohamed Ibrahim Mohamed Tahir ◽  
Karen A. Crouse ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angles ◽  
Pyridinium Chloride ◽  
Double Bonds ◽  
Phenyl Rings

In the title salt of anS-substituted dithiocarbazate, C16H16N3S2+·Cl−, the dihedral angles between the almost planar (r.m.s deviation = 0.005 Å) central CN2S2residue and the terminal pyridinium and phenyl rings are 80.09 (11) and 3.82 (11)°, respectively, indicating the cation has an L-shape; the amine H and thione S atoms aresyn. The conformation about each of the imine [1.376 (3) Å] and ethene [1.333 (4) Å] bonds isE. The shortened C—C bond [1.444 (4) Å] linking the double bonds is consistent with conjugation in this part of the molecule. In the crystal, supramolecular layers with a jagged topology are formed by charged-assisted amine-H...Cl−and pyridinium-N+—H...Cl−hydrogen bonds. The layers stack along theaaxis with no specific directional interactions between them.

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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