Bioassay-Guided Separation and Identification of a New Anti-Lung Cancer Compound from Cordyceps militaris by Means of Off-Line Two-Dimensional Preparative Chromatography, Real-Time Cell Analysis, and X-ray Single-Crystal Diffraction

2015 ◽  
Vol 78 (7-8) ◽  
pp. 495-506 ◽  
Author(s):  
Jiachen Sun ◽  
Yujiao Chen ◽  
Yueting Wu ◽  
Xiaoqian Zhang ◽  
Lei Jiang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Single Crystal ◽  
Real Time ◽  
Cordyceps Militaris ◽  
Preparative Chromatography ◽  
Two Dimensional ◽  
Cell Analysis ◽  
Single Crystal Diffraction ◽  
X Ray

Preparation and Crystal Structure Er (III) Complex with 2-Formylbenzenesulfonic Sodium-3-Thiosemicarbazide

2011 ◽  
Vol 396-398 ◽  
pp. 993-996
Author(s):  
Xi Shi Tai
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Single Crystal ◽  
Layered Structure ◽  
Ir Spectrum ◽  
Two Dimensional ◽  
Single Crystal Diffraction ◽  
Element Analysis ◽  
X Ray ◽  
Complex Forms

A novel ligand containing sulfonic has been synthesized using 2-formylbenzenesulfonic sodium and 3-thiosemicarbazide as starting materials, and a Er (III) complex was synthesized. The ligand was characterized by element analysis and IR spectrum. The crystal structure of the Er (III) complex was determined by X-ray single crystal diffraction. The results showed that the compound was triclinic, with P-1, a = 1.0596(4) nm, b = 1.3700(5) nm, c = 1.8305(7) nm, V = 2.4726(16) nm3, Z=2, M r= 1244.42, De =1.671 g/cm3, T = 273(2) K, F (000) = 1270, R = 0.0517 and wR = 0.1124. The complex forms two-dimensional layered structure through hydrogen bonds and π-π stacking.

Magnetic Susceptibility and Structure of Some Transition Metal (II) Complexes with 1,2,4-Triazole

1977 ◽  
Vol 32 (7) ◽  
pp. 783-784 ◽  
Author(s):  
D. W. Engelfriet ◽  
J. G. Haasnoot ◽  
W. L. Groeneveld
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Transition Metal ◽  
Metal Ions ◽  
Single Crystal ◽  
Two Dimensional ◽  
Single Crystal Diffraction ◽  
Magnetic Susceptibilities ◽  
X Ray

Abstract The magnetic susceptibilities of some transition metal (II) complexes with 1,2,4-triazole (trz) have been measured in the range 2-300 K. Ni (trz)2 (NO3)2 (H2O) 8/3, Ni (trz)2 SO4 (H2O)5 and α-Ni (trz)2 (NCS)2 are found to be linear antiferromagnetic trimers. For β- Ni (trz)2 (NCS)2 and similar compounds with Mn (II), Fe (II), Co (II) and Cu(II), totally different magnetic properties were observed, suggesting the presence of two-dimensional networks of metal ions bridged by 1,2,4-triazole molecules. For Co (trz) 2 (NCS) 2 this was confirmed by X-ray single crystal diffraction.

Single-crystal x-ray diffraction from an icosahedral quasicrystal

1987 ◽  
Vol 2 (3) ◽  
pp. 294-297 ◽  
Author(s):  
A. R. Kortan ◽  
H. S. Chen ◽  
J. V. Waszczak
Keyword(s):  
Single Crystal ◽  
Real Time ◽  
Symmetry Axis ◽  
Icosahedral Quasicrystal ◽  
X Ray Diffraction ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Cu Alloy ◽  
Real Time Transmission

Single-crystal x-ray diffraction measurements made on a millimeter-size single icosahedral quasicrystal of an Al–Li–Cu alloy are reported. The point symmetries observed directly by real-time transmission Laue x-ray diffraction and the measured angles between the major symmetry axis are consistent with an icosahedral quasicrystal, and the peaks observed in the single-crystal diffraction scans are found to be indexable with six indices that belong to a primitive icosahedral Bravais quasilattice.

scholarly journals The complex analysis of X-ray mesh scans for macromolecular crystallography

2018 ◽  
Vol 74 (4) ◽  
pp. 355-365 ◽  
Author(s):  
Igor Melnikov ◽  
Olof Svensson ◽  
Gleb Bourenkov ◽  
Gordon Leonard ◽  
Alexander Popov
Keyword(s):  
Single Crystal ◽  
Complex Analysis ◽  
Two Dimensional ◽  
Sample Holder ◽  
Macromolecular Crystallography ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Raster Scans ◽  
Dimensional Crystal

In macromolecular crystallography, mesh (raster) scans are carried out either as part of X-ray-based crystal-centring routines or to identify positions on the sample holder from which diffraction images can be collected. Here, the methods used inMeshBest, software which automatically analyses diffraction images collected during a mesh scan and produces a two-dimensional crystal map showing estimates of the dimensions, centre positions and diffraction qualities of each crystal contained in the mesh area, are presented. Sample regions producing diffraction images resulting from the superposition of more than one crystal are also distinguished from regions with single-crystal diffraction. The applicability of the method is demonstrated using several cases.

scholarly journals Environmentally Friendly Nafion-Catalyzed Synthesis of Substituted 2-Ethyl-3-Methylquinolines from Aniline and Propionaldehyde under Microwave Irradiation

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 877
Author(s):  
Chieh-Kai Chan ◽  
Chien-Yu Lai ◽  
Cheng-Chung Wang
Keyword(s):  
Reaction Mechanism ◽  
Microwave Irradiation ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Environmentally Friendly ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Related Data ◽  
Heating Source ◽  
Chemical Structures

Herein, we report a facile synthetic methodology for the preparation of 2,3-dialkylquinolines from anilines and propionaldehydes. This cyclization involved environmentally friendly Nafion® NR50 as an acidic catalyst with microwave irradiation as the heating source. A series of substituted 2-ethyl-3-methylquinolines were prepared from various anilines and propionaldehyde derivatives through this protocol with good to excellent yields. Some new chemical structures were confirmed by X-ray single-crystal diffraction analysis and the related data were provided. The plausible reaction mechanism studies are also discussed.

scholarly journals Structural Diversity of Six Coordination Polymers Based on the Designed X-Shaped Ligand 1,1,1,1-Tetrakis[(3-pyridiniourea)methyl]methane

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2292 ◽  
Author(s):  
Qi-Long Zhang ◽  
Qing Yu ◽  
Hai-Fang Xie ◽  
Bo Tu ◽  
Hong Xu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Chain Complex ◽  
Structural Diversity ◽  
Structural Comparison ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Loop Chain

In this study, six coordination polymers (CPs), {[Ag2(L)(CF3SO3)]·CF3SO3·2H2O·DMF}n (1), {[Ag(L)]·SbF6·4DMF·H2O}n (2), {[Zn(L)0.5(I)2]·3.75H2O}n (3), {[Cd2(L)(I)4(H2O)(DMF)]·4H2O·3DMF}n (4), {[Hg2(L)(I)4]·H2O·4DMF}n (5) and {[Hg2(L)(Cl)4]·2H2O·3DMF}n (6), were obtained based on the designed X-shaped urea-based ligand. X-ray single crystal diffraction analysis revealed that complex 1 displayed a 3D (3,4)-connected {6·82}{64·82}-tcj net. Complex 2 featured a 2D 4-connected {43·63} sheet. Complexes 3 and 5 exhibited a 1D polymeric loop chain. Complex 4 displayed a 1D polymeric fishbone chain. Complex 6 showed a 2D 4-connected {44·62}-sql sheet. Structural comparison revealed that not only the metal ions, but also the anions played crucial roles in the control of final structures.

scholarly journals One-pot tandem cyclization of enantiopure asymmetric cis-2,5-disubstituted pyrrolidines: Facile access to chiral 10-heteroazatriquinanes

2013 ◽  
Vol 9 ◽  
pp. 265-269 ◽  
Author(s):  
Ping-An Wang ◽  
Sheng-Yong Zhang ◽  
Henri B Kagan
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Single Crystal Diffraction ◽  
One Pot ◽  
X Ray ◽  
Tandem Cyclization

A series of chiral 10-heteroazatriquinanes were synthesized from enantiopure asymmetric cis-2,5-disubstituted pyrrolidines through a one-pot tandem cyclization procedure. The structures and configurations of these new chiral 10-heteroazatriquinanes are confirmed by X-ray single-crystal diffraction analysis.

scholarly journals Synthesis, Characterization, and Crystal Structure of [Co4(CH3CO2)2L4]2[BPh4]4·0.5H2O, Where HL = 4-(Salicylaldiminato)antipyrine

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ramadan M. El-mehdawi ◽  
Abdussalam N. EL-dewik ◽  
Mufida M. Ben-Younes ◽  
Fathia A. Treish ◽  
Ramadan G. Abuhmaiera ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Title Complex ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Tridentate Schiff Base

The title complex was isolated as a red solid from the reaction of 4-(salicylaldiminato)antipyrine, HL, and cobalt (II) acetate in ethanol. The complex has been characterized by elemental analysis, FTIR, UV-Vis, and X-ray single crystal diffraction. Two crystallographically different cationic units, A and B, of the title complex are found. Both units are essentially isostructural; nevertheless, small differences exist between them. Both units contain four cobalt atoms arranged at the corners of distorted cubane-like core alternatively with phenoxy oxygen of the Schiff base. In both cases, one cobalt binds to three coordinated sites from the corresponding tridentate Schiff base ligand, and the fourth one was bonded by the acetate oxygen, and the fifth and the sixth donor sites come from the phenolate oxygen of another Schiff base ligand.

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