Results 31 to 40 of about 286,921 (208)

Conformational dimorphism of 2,2′-methylenebis(isoindoline-1,3-dione)

Acta Crystallographica Section E: Crystallographic Communications, 2019
In this study, a new monoclinic polymorph (space group C2/c) of 2,2′-methylenebis(isoindoline-1,3-dione), C17H10N2O4, is reported and compared to the previously reported triclinic polymorph (space group P\overline{1}).
Tze Shyang Chia, Huey Chong Kwong, Ai Jia Sim, Weng Zhun Ng, Qin Ai Wong, C. S. Chidan Kumar, Ching Kheng Quah, Md. Azharul Arafath   +7 more
doaj   +1 more source

Quantitative Imaging of Single, Unstained Viruses with Coherent X-rays

, 2008
Since Perutz, Kendrew and colleagues unveiled the structure of hemoglobin and myoglobin based on X-ray diffraction analysis in the 1950s, X-ray crystallography has become the primary methodology used to determine the 3D structure of macromolecules ...
A. C. Steven, Adrian Mancuso, Bagrat Amirbekian, Changyong Song, Huaidong Jiang, J. Kirz, Jianwei Miao, Li Peng, Ren Sun, Sanket S. Shah, Tetsuya Ishikawa, Z. Hong Zhou   +11 more
core   +1 more source

Crystal structure of a second monoclinic polymorph of 3-methoxybenzoic acid with Z′ = 1

Acta Crystallographica Section E: Crystallographic Communications, 2019
A new polymorphic form of the title compound, C8H8O3, is described in the centrosymmetric monoclinic space group P21/c with Z′ = 1 as compared to the first polymorph, which crystallizes with two conformers (Z′ = 2) in the asymmetric unit in the same ...
Tze Shyang Chia, Huey Chong Kwong, Qin Ai Wong, Ching Kheng Quah, Md. Azharul Arafath   +4 more
doaj   +1 more source

2,4-Dichloro-N-(2,5-dioxopyrrolidin-1-yl)benzamide

IUCrData, 2018
In the title compound, C11H8Cl2N2O3, the plane of the pyrrolidine ring (r.m.s. deviation = 0.065 Å) makes a dihedral angle of 52.9 (2)° with the plane of the benzene ring.
Jigmat Stondus, Sumati Anthal, S. Karanth, B. Narayana, B. K. Sarojini, Rajni Kant   +5 more
doaj   +1 more source

Spotlight on Alkali Metals: The Structural Chemistry of Alkali Metal Thallides

Crystals, 2020
Alkali metal thallides go back to the investigative works of Eduard Zintl about base metals in negative oxidation states. In 1932, he described the crystal structure of NaTl as the first representative for this class of compounds.
Stefanie Gärtner
doaj   +1 more source

Regio-selective substitution at the 1,3- and 6,8-positions of pyrene for the construction of small dipolar molecules [PDF]

, 2015
© 2015 American Chemical Society. This article presents a novel asymmetrical functionalization strategy for the construction of dipolar molecules via efficient regioselective functionalization along the Z-axis of pyrene at both the 1,3- and 6,8-positions.
Elsegood, Mark R. J., Feng, Xing, Horsburgh, Lynne, Hu, Jian-Yong, Redshaw, Carl, Teat, Simon J., Tomiyasu, Hirotsugu, Wei, Xianfu, Yamato, Takehiko   +8 more
core   +8 more sources

Benzofuranyl Esters: Synthesis, Crystal Structure Determination, Antimicrobial and Antioxidant Activities

Molecules, 2015
A series of five new 2‐(1‐benzofuran‐2‐yl)‐2‐oxoethyl 4-(un/substituted)benzoates 4(a–e), with the general formula of C8H5O(C=O)CH2O(C=O)C6H4X, X = H, Cl, CH3, OCH3 or NO2, was synthesized in high purity and good yield under mild conditions.
C. S. Chidan Kumar, Li Yee Then, Tze Shyang Chia, Siddegowda Chandraju, Yip-Foo Win, Shaida Fariza Sulaiman, Nurul Shafiqah Hashim, Kheng Leong Ooi, Ching Kheng Quah, Hoong-Kun Fun   +9 more
doaj   +1 more source

Serial X-ray Crystallography

Crystals, 2022
Serial crystallography (SX) is an emerging technique to determine macromolecules at room temperature. SX with a pump–probe experiment provides the time-resolved dynamics of target molecules.
Ki Hyun Nam
doaj   +1 more source

O- vs. N-protonation of 1-dimethylaminonaphthalene-8-ketones: formation of a peri N–C bond or a hydrogen bond to the pi-electron density of a carbonyl group [PDF]

, 2014
X-ray crystallography and solid-state NMR measurements show that protonation of a series of 1-dimethylaminonaphthalene-8-ketones leads either to O protonation with formation of a long N–C bond (1.637–1.669 Å) between peri groups, or to N protonation and ...
Allen, Andrew Jarmyn, Barbour, Bell, Chen, Claire Wilson, Clark, Coles, Dyker, Fletcher, Frey, Giavani, Gobetto, Gregory J. Rees, Gu, Gu, Hojo, Houk, John D. Wallis, John V. Hanna, Kiefl, Lari, Macrae, Martin, Mateusz B. Pitak, Meot-Ner, Murray-Rust, Nerea Mercadal, O'Leary, Penner, Rees, Schuster, Schweizer, Sheldrick, Simon J. Coles, Steiner, Stephen P. Day, Stoyanov, Taylor, Tkatchenko   +39 more
core   +2 more sources

Polymorph of (E)-N′-(4-chlorobenzylidene)isonicotinohydrazide monohydrate

IUCrData, 2018
The title hydrate, C13H10ClN3O·H2O, is the orthorhombic polymorph of the previously reported monoclinic compound [Fun et al. (2012). Acta Cryst. E68, o2303–o2304).
Jigmat Stondus, Sumati Anthal, A. Jayashree, B. Narayana, B. K. Sarojini, Rajni Kant   +5 more
doaj   +1 more source