Results 21 to 30 of about 19,443,010 (390)
(2-Hydroxyphenyl)(4,2′:4′,4′′-terpyridin-6′-yl)methanone
IUCrData, 2020 The title compound, C22H15N3O2, can be described as a ketone with a phenol substituent and a terpyridine ligand coordinated to the carbonyl group. The three six-membered rings of the terpyridine ligand are not coplanar.
S. Devika +3 more
doaj +1 more source
Predicting the Volumes of Crystals [PDF]
, 2017 New crystal structures are frequently derived by performing ionic substitutions on known crystal structures. These derived structures are then used in further experimental analysis, or as the initial guess for structural optimization in electronic ...
Chu, Iek-Heng +4 more
core +2 more sources
Crystal structure of cafenstrole [PDF]
Acta Crystallographica Section E Crystallographic Communications, 2015 The title compound (systematic name:N,N-diethyl-3-mesitylsulfonyl-1H-1,2,4-triazole-1-carboxamide), C16H22N4O3S, is a triazole herbicide. The dihedral angle between the planes of the triazole and benzene ring planes is 88.14 (10)°. In the crystal, C—H...O hydrogen bonds and weak C—H...π interactions link adjacent molecules, forming one-dimensional ...
Jineun Kim +3 more
openaire +3 more sources
A Novel One-Dimensional Porphyrin-Based Covalent Organic Framework
Molecules, 2019 A novel one-dimensional covalent organic framework (COF-K) was firstly designed and synthesized through a Schiff-based reaction from a porphyrin building block and a nonlinear right-angle building block.
Miao Zhang +5 more
doaj +1 more source
Crystallizing the hypoplactic monoid: from quasi-Kashiwara operators to the Robinson--Schensted--Knuth-type correspondence for quasi-ribbon tableaux [PDF]
, 2016 Crystal graphs, in the sense of Kashiwara, carry a natural monoid structure given by identifying words labelling vertices that appear in the same position of isomorphic components of the crystal.
Cain, Alan J., Malheiro, António
core +2 more sources
Crystal structure refinement with SHELXL
Acta Crystallographica Section C Structural Chemistry, 2015 New features added to the refinement program SHELXL since 2008 are described and explained.
G. Sheldrick
semanticscholar +1 more source
THE CRYSTAL STRUCTURE OF STURMANITE [PDF]
The Canadian Mineralogist, 2004 Sturmanite, ideally Ca6Fe 3+ 2(SO4)2.5[B(OH)4](OH)12•25H2O, is trigonal, P31c, Z = 2, with a 11.188(9), c 21.91(7) A, V 2375.1(5) A 3 . The crystal structure has been refined to an R index of 0.079. As in the case of ettringite, two coaxial elements parallel to [001] can be considered as the most distinctive features of sturmanite.
PUSHCHAROVSKY DY +6 more
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Crystal structure of pencycuron [PDF]
Acta Crystallographica Section E Crystallographic Communications, 2015 In the title compound [systematic name: 1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea], C19H21ClN2O, which is a urea fungicide, the cyclopentyl ring adopts an envelope conformation, with one of the methylene C atoms adjacent to the C atom bonding to the N atom as the flap. The dihedral angles between the mean planes of the central cyclopentyl ring (all
Jineun Kim +3 more
openaire +3 more sources
A temperature-dependent phase transformation of (E)-2-[(4-chloro-phen-yl)imino]-ace-naphthylen-1-one. [PDF]
, 2017 The crystal structure determination based on 90 K data of the title imine ligand, C18H10ClNO, revealed non-merohedral twinning with three twin domains. In our experience, this is an indication of an ordering phase transition.
Bao, Lipiao, Olmstead, Marilyn M
core +1 more source
Crystal Structure of 6,7-Dihydro-5a,7a,13,14-tetraaza-pentaphene-5,8-dione
X-ray Structure Analysis Online, 2019 The X-ray crystal structure of 6,7-dihydro-5a,7a,13,14-tetraaza-pentaphene-5,8-dione, a potential antiproliferative agent on A2058 melanoma cells, was established. It crystallizes in the monoclinic space group P21/c with cell parameters a = 24.879(3)A, b
Jean Guillon +6 more
semanticscholar +1 more source