Results 91 to 100 of about 286,921 (208)
Hexabenzo[4.4.4]propellane: A Helical Molecular Platform for the Construction of Electroactive Materials [PDF]
, 2007 Helical hexabenzo[4.4.4]propellane (a relative of hexaphenylethane) and its derivatives are synthesized and their structures are established by X-ray crystallography.
Debroy, Paromita +2 more
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Nature, 1962 Direct Methods in Crystallography By M. M. Woolfson. (Monographs on the Physics and Chemistry of Materials.) Pp. viii + 144. (Oxford: Clarendon Press; London: Oxford University Press. 1961.) 30s. net.
openaire +1 more source
2-[(E)-2-(4-Ethoxyphenyl)ethenyl]-1-methylquinolinium 4-fluorobenzenesulfonate
Acta Crystallographica Section E, 2014 In the structure of the title salt, C20H20NO+·C6H4FO3S−, the 4-(ethoxyphenyl)ethenyl unit is disordered over two positions with a refined site-occupancy ratio of 0.610 (6):0.390 (6). The cation is nearly planar, the dihedral angle between the quinolinium
Hoong-Kun Fun +4 more
doaj +1 more source
Resonant X-ray diffraction studies on the charge ordering in magnetite
, 2006 Here we show that the low temperature phase of magnetite is associated with an effective, although fractional, ordering of the charge. Evidence and a quantitative evaluation of the atomic charges are achieved by using resonant x-ray diffraction (RXD ...
C. Marin +8 more
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1-(2,4-Dinitrophenyl)-2-[(E)-(3,4,5-trimethoxybenzylidene)]hydrazine
Acta Crystallographica Section E, 2014 Molecules of the title compound, C16H16N4O7, are not planar with a dihedral angle of 5.50 (11)° between the substituted benzene rings. The two meta-methoxy groups of the 3,4,5-trimethoxybenzene moiety lie in the plane of the attached ring [Cmethyl–O–C–C ...
Suchada Chantrapromma +4 more
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(E)-2-[4-(Diethylamino)styryl]-1-methylquinolin-1-ium 4-chlorobenzenesulfonate monohydrate
Acta Crystallographica Section E, 2014 The asymmetric unit of the title hydrated salt, C22H25N2+·C6H4ClO3S−·H2O, comprises two 2-[4-(diethylamino)styryl]-1-methylquinolin-1-ium cations, two 4-chlorobenzenesulfonate anions and two solvent water molecules.
Suchada Chantrapromma +4 more
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Synthesis and Structures of Fused N-Heterocylic Carbenes and Their Rhodium Complexes [PDF]
, 2010 New procedures for the synthesis of N-heterocyclic carbenes with multiple fused rings have been developed utilizing a key ring-closing metathesis step. Rhodium complexes were obtained via the pentafluorophenyl carbene adducts.
Grubbs, Robert H. +2 more
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(E)-4-Methoxy-N′-(2,4,5-trimethoxybenzylidene)benzohydrazide hemihydrate
Acta Crystallographica Section E, 2014 The title compound crystallizes as a hemihydrate, C18H20N2O5·0.5H2O. The molecule exists in an E conformation with respect to the C=N imine bond. The 4-methoxyphenyl unit is disordered over two sets of sites with a refined occupancy ratio of 0.54 (2):0 ...
Suchada Chantrapromma +4 more
doaj +1 more source
(E)-1-(2,4-Dinitrophenyl)-2-(3-ethoxy-4-hydroxybenzylidene)hydrazine
Acta Crystallographica Section E, 2014 The molecule of the title hydrazine derivative, C15H14N4O6, is essentially planar, the dihedral angle between the substituted benzene rings being 2.25 (9)°. The ethoxy and hydroxy groups are almost coplanar with their bound benzene ring [r.m.s. deviation
Hoong-Kun Fun +4 more
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A century of X-ray crystallography and 2014 international year of X-ray crystallography
Macedonian Journal of Chemistry and Chemical Engineering, 2015 The 100th anniversary of the Nobel prize awarded to Max von Laue in 1914 for his discovery of diffraction of X-rays on a crystal marked the beginning of a new branch of science - X-ray crystallography.
Biserka Kojić-Prodić
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