scholarly journals Crystal structure of 2-phenyl-2λ4,3-ditelluratetracyclo[5.5.2.04,13.010,14]tetradeca-1(12),4,6,10,13-pentaen-2-ylium trifluoromethanesulfonate

2014 ◽  
Vol 70 (9) ◽  
pp. o1003-o1004
Author(s):  
Louise M. Diamond ◽  
Alexandra M. Z. Slawin ◽  
J. Derek Woollins
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Compound C ◽  
Counter Ion ◽  
Binuclear Molecule ◽  
Supramolecular Layer

In the title compound, C18H13Te2+·CF3O3S−, the TeIIatom of the cation and one O atom of the trifluoromethanesulfonate counter-ion form a close-to-linear Te—Te—O system, with a Te—Te—O angle of 172.3 (1)° and a Te—O distance of 2.816 (5) Å, which may suggest the presence of a three-centre–four-electron (3c–4e) bond. Secondary Te...O interactions [3.003 (4) and 3.016 (4) Å], involving the second TeIIatom of the binuclear molecule, are also noted, resulting in a supramolecular layer in thebcplane.

scholarly journals 5-Methylspiro[indoline-3,7′-[6H,7H,8H]pyrano[3,2-c:5,6-c′]di[1]benzopyran]-2,6′,8′-trione chloroform hemisolvate

2012 ◽  
Vol 68 (4) ◽  
pp. o1194-o1194
Author(s):  
Abdulrahman I. Almansour ◽  
Raju Suresh Kumar ◽  
Natarajan Arumugam ◽  
R. Vishnupriya ◽  
J. Suresh
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyran Ring ◽  
Acta Cryst ◽  
Compound C ◽  
Supramolecular Layer

In the title compound, C27H15NO6·0.5CHCl3, the central pyran ring and both the benzopyran systems are planar, with the dihedral angle between the outer rings being 3.24 (6)°. The indolin-2-one system is in a perpendicular configuration with respect to the pyran ring [dihedral angle = 87.58 (2)°]. Supramolecular layers in theacplane are formed in the crystal structure whereby inversion-related molecules are connected by N—H...O hydrogen bonds. These are further linked by C—H...O interactions, forming a supramolecular layer in theacplane. Disordered CHCl3solvent in the structure was modelled with the SQUEEZE routine inPLATON[Spek (2009).Acta Cryst.D65, 148–155].

scholarly journals Crystal structure of ethyl (E)-4-(4-chlorophenyl)-4-methoxy-2-oxobut-3-enoate

2014 ◽  
Vol 70 (9) ◽  
pp. o1025-o1025
Author(s):  
Darlene Correia Flores ◽  
Juliano Rosa de Menezes Vicenti ◽  
Bruna Ávila Pereira ◽  
Gabriele Marques Dias da Silva ◽  
Priscilla Jussiane Zambiazi
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Ethyl Ester ◽  
Dihedral Angle ◽  
Title Compound ◽  
Compound C ◽  
Supramolecular Layer ◽  
Benzene Carboxylate

In the title compound, C13H13ClO4, the dihedral angle between the chlorobenezene ring and the least-squares plane through the 4-methoxy-2-oxobut-3-enoate ethyl ester residue (r.m.s. deviation = 0.0975 Å) is 54.10 (5)°. In the crystal, molecules are connected by methoxy–ketone and benzene–carboxylate carbonyl C—H...O interactions, generating a supramolecular layer in theacplane.

scholarly journals rac-18-Methoxycoronaridine hydrochloride

2012 ◽  
Vol 68 (4) ◽  
pp. o1041-o1041
Author(s):  
Martin E. Kuehne ◽  
Rory Waterman
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Compound C ◽  
Counter Ion

In the crystal structure of the racemic title compound, C22H29N2O3+·Cl−, both NH groups form N—H...Cl hydrogen bonds with the chloride counter-ion, forming translational chains along theaaxis.

Crystal structure of 12H+-2,4-benzo-1,5-dioxa-8,12,16-triaza-cyclooctadec-2-ene-7,17-dione picrate

2002 ◽  
Vol 217 (1) ◽  
Author(s):  
G. Hundal ◽  
S. Kumar ◽  
M. S. Hundal ◽  
H. Singh
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Compound C

AbstractThe title compound [C

scholarly journals Crystal structure of ethyl 2-{2-[(1Z)-1-hydroxy-3-(4-nitrophenyl)-3-oxoprop-1-en-1-yl]phenoxy}acetate

2015 ◽  
Vol 71 (12) ◽  
pp. o917-o918 ◽  
Author(s):  
Shaaban K. Mohamed ◽  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Eman A. Ahmed ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Compound C

The title compound, C19H17NO7, crystallized in a ratio of about 6:4 of the two possible keto–enol forms. This was observed as disorder over the central C3H2O2unit. The dihedral angle between the rings is 8.2 (2)°.The molecules pack by C—H...O interactions in a layered fashion parallel to (-104).

scholarly journals N-(5-Chloro-1,3-thiazol-2-yl)-2,4-difluorobenzamide

2012 ◽  
Vol 68 (6) ◽  
pp. o1857-o1857 ◽  
Author(s):  
Xi-Wang Liu ◽  
Jian-Yong Li ◽  
Han Zhang ◽  
Ya-Jun Yang ◽  
Ji-Yu Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Benzoyl Chloride ◽  
Bond Lengths ◽  
Compound C

The title compound, C10H5ClF2N2OS, was obtained by linking an amino heterocycle and a substituted benzoyl chloride. The dihedral angle between the two rings is 41.2 (2)° and the equalization of the amide C—N bond lengths reveals the existence of conjugation between the benzene ring and the thiazole unit. In the crystal, pairs of N—H...N hydrogen bonds link molecules into inversion dimers. Non-classical C—H...F and C—H...O hydrogen bonds stabilize the crystal structure.

scholarly journals Powder study of 3-azabicyclo[3.3.1]nonane-2,4-dione form 2

2006 ◽  
Vol 62 (7) ◽  
pp. o3046-o3048 ◽  
Author(s):  
Ashley T Hulme ◽  
Philippe Fernandes ◽  
Alastair Florence ◽  
Andrea Johnston ◽  
Kenneth Shankland
Keyword(s):  
Crystal Structure ◽  
Simulated Annealing ◽  
Hydrogen Bonds ◽  
Powder Diffraction ◽  
Title Compound ◽  
Variable Temperature ◽  
Polycrystalline Sample ◽  
Asymmetric Unit ◽  
X Ray ◽  
Compound C

A polycrystalline sample of a new polymorph of the title compound, C8H11NO2, was produced during a variable-temperature X-ray powder diffraction study. The crystal structure was solved at 1.67 Å resolution by simulated annealing from laboratory powder data collected at 250 K. Subsequent Rietveld refinement yielded an R wp of 0.070 to 1.54 Å resolution. The structure contains two molecules in the asymmetric unit, which form a C 2 2(8) chain motif via N—H...O hydrogen bonds.

4-(Acetylaminomethyl)-1-methylpyridinium iodide

2007 ◽  
Vol 63 (11) ◽  
pp. o4278-o4278
Author(s):  
Alexandra M. Z. Slawin ◽  
William T. A. Harrison
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Aromatic Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Compound C ◽  
Acetyl Group

In the title compound, C9H13N2O+·I−, the dihedral angle between the aromatic ring and the N-acetyl group is 73.93 (8)°. In the crystal structure, the cation and anion interact by way of an N—H...I hydrogen bond.

scholarly journals Crystal structure of diisopropylaminium dichloroacetate

2015 ◽  
Vol 71 (5) ◽  
pp. o361-o361
Author(s):  
Wei Sun ◽  
Guangzhi Shan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Compound C

In the title compound, C6H16N+·C2HCl2O2−, the cation exhibits non-crystallographicC2symmetry. In the crystal, the components are linked by N—H...O and C—H...O hydrogen bonds into chains propagating along [010].

2,4,6-Trimethylpyridine-3,5-dicarbonitrile

2006 ◽  
Vol 62 (7) ◽  
pp. o2765-o2767
Author(s):  
Hong-Li Wang ◽  
Bin Zhang ◽  
Yi Dai
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Asymmetric Unit ◽  
Compound C ◽  
Hydrogen Bonding Interactions

The title compound, C10H9N3, is essently planar, except for the methyl H atoms. The asymmetric unit consists of two molecules. In the crystal structure, weak intramolecular C—H...N hydrogen-bonding interactions occur, linking the molecules into chains propagating along the a axis.

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