Results 51 to 60 of about 3,741,215 (311)

[2,2′-Bis(diphenylphosphanyl)-1,1′-binaphthyl-κ2P,P′]dichloridoplatinum(II) acetonitrile trisolvate

IUCrData, 2020
The crystal structure (150 K) of the racemic title compound, [PtCl2(C44H32P2)]·3CH3CN, has been determined. The asymmetric unit comprises a single molecule of the title compound co-crystallized with three acetonitrile solvent molecules.
Jason D. Braun, Guneet Uppal, David E. Herbert   +2 more
doaj   +1 more source

rac-Ethyl 3-(3-bromo-2-thienyl)-2-oxo-6-(4-propoxyphenyl)cyclohex-3-ene-1-carboxylate

Acta Crystallographica Section E, 2008
The racemic title compound, C22H23BrO4S, crystallizes with two molecules in the asymmetric unit. The dihedral angles between the thiophene and phenyl rings are 71.64 (17) and 73.41 (17)°.
Andreas Fischer, M. T. Swamy, H. S. Yathirajan, B. Narayana   +3 more
doaj   +1 more source

Synthesis, Spectral and Solid State Characterization of a New Bioactive Hydrazine Bridged Cyclic Diphosphonium Compound

Molecules, 2012
The facile preparation of a racemic hydrazine bridged diphosphonium compound possessing a ring system analogous to bicyclo[3.3.2]decane is reported. Although the reaction yield is low, the structure of the compound, which possesses an eight-membered ring,
Miroslava Vujčić, Tatjana Božić, Katarina Anđelković, Dušanka Radanović, Urszula Rychlewska, Beata Warżajtis, Milica Milenković, Dušan Sladić   +7 more
doaj   +1 more source

3-(2,2-Dioxo-3,4-dihydrobenzo[e][1,2,3]oxathiazin-4-yl)-3-fluoro-1-phenylindolin-2-one

IUCrData, 2020
The title compound, C21H15FN2O4S, contains two chiral carbon centres, but crystal symmetry generates a racemic mixture. The crystal structure features N—H...O hydrogen bonding. The sulfonate group is disordered with an occupancy ratio of 0.933 (4):0.067 (
Mei-Fang Wu, Ling-Yan Chen, Ya Li
doaj   +1 more source

3-(2-Amino-1-methyl-4-oxo-4,5-dihydro-1H-imidazol-5-yl)-3-hydroxy-1-phenylindolin-2-one ethanol solvate

Acta Crystallographica Section E, 2009
In the title compound, C18H16N4O3·C2H5OH, molecules are linked into chains by a series of intermolecular N—H...O, N—H...N and O—H...O hydrogen bonds which stabilize the crystal structure.
Narsimha Reddy Penthala, Thirupathi Reddy Yerram Reddy, Sean Parkin, Peter A. Crooks   +3 more
doaj   +1 more source

Non-Linear Effects in Asymmetric Reactions: Negative and Positive Stereoselectivity in the Formation of Homoleptic 1:2 Metal to Ligand Complexes of Chiral 1,9-Disubstituted Semicorrin Ligands

CHIMIA, 2003
The stereoselectivity of the formation of bis-chelates with the 1,9-disubstituted chiral semicorrin ligands (1S,9S)-dimethyl 5-cyanosemicorrin-1,9-dicarboxylate (1) for Co2+, Ni2+, Cu2+, and Pd2+ and with its (1S,9S)-diethyl analogue 2 for Co2+
Nathalie Guicher, Helen Stoeckli-Evans, Klaus Bernauer   +2 more
doaj   +1 more source

THE DISSOCIATION CONSTANTS OF RACEMIC PROLINE AND CERTAIN RELATED COMPOUNDS [PDF]

Journal of General Physiology, 1926
1. It has been experimentally shown that breaking of the pyrrolidine ring of proline by nitrous acid is not a factor of sufficient magnitude to account for the amino nitrogen which is usually found in proline preparations. 2. A method for the preparation of racemic proline is described.
C M, McCay, C L, Schmidt
openaire   +2 more sources

3,3,6-Tribromo-1-methyl-1H-2,1-benzothiazin-4(3H)-one 2,2-dioxide

Acta Crystallographica Section E, 2010
In the title compound, C9H6Br3NO3S, a halogenated benzothiazine derivative, the thiazine ring adopts a sofa conformation. The crystal studied was a racemic twin with a contribution of 72 (1)% of the major domain.
Ghulam Mustafa, Muhammad Nadeem Arshad, Islam Ullah Khan, Muhammad Shafiq   +3 more
doaj   +1 more source

Synthesis and crystal structure of (±)-Goniotamirenone C

Acta Crystallographica Section E: Crystallographic Communications, 2020
The structure of the racemic version of the natural product Goniotamirenone C [racemic anti-6-(2-chloro-1-hydroxy-2-phenylethyl)-2H-pyran-2-one, C13H11ClO3] at 150 K is reported. The compound crystallizes with monoclinic (P21/n) symmetry and with Z′ = 2.
Pornphimol Meesakul, Christopher Richardson, Surat Laphookhieo, Stephen G. Pyne   +3 more
doaj   +1 more source

Expected and Unexpected Products in Half Curcuminoid Synthesis: Crystal Structures of But-3-en-2-ones and 3-Methylcyclohex-2-enones

Crystals, 2021
The expected (E)-but-3-en-2-ones compounds I and II (half curcuminoids) were obtained by the Claisen–Schmidt reaction between aldehydes 3,4-dimethoxybenzaldehyde or 4-nitrobenzaldehyde with acetone.
Marco A. Obregón-Mendoza, Imilla I. Arias-Olguín, William Meza-Morales, Yair Alvarez-Ricardo, María Isabel Chávez, Rubén A. Toscano, Julia Cassani, Raúl G. Enríquez   +7 more
doaj   +1 more source