نتایج جستجو برای: single crystal x ray diffraction

تعداد نتایج: 1611569  

Massoud Rafizadeh

The reaction of barium chloride with 2, 6-pyridinedicarboxylic acid in water led to the formation of a novelpolymeric complex formulated as {[Ba2(Hpydc)2(pydc)(H20)3].H20.(H2pydc)}.(I). The crystal structure of (I)was characterized by single crystal X-ray diffraction method. The complex was crystallized in the monoclinicsystem with space group P2/c, with four molecule in unit-cell, e.g Z=4. The...

2011
Xin Leng Bingqin Yang Yuanyuan Liu Yi Xie Jie Tong

Three novel nitrogen-containing macrolides have been synthesized by esterification. All of them have been characterized by infrared (IR), elemental analysis, mass spectra (MS), and 1H NMR spectroscopy, and their crystal structures were determined by single-crystal X-ray diffraction. The preparation methods and the intermolecular associations based on C–H· · ·O hydrogen bonds and ππ stacking int...

2012
Dániel Izsák

5-Azido-3-nitro-1H-1,2,4-triazole, its methyl derivative and potassium salt were synthesized and characterized by various spectroscopic methods. The crystal structures were determined by low temperature single crystal X-ray diffraction. The interactions between the molecules or ions were analyzed and discussed. Furthermore, all compounds were tested according to BAM (Bundesanstalt für Materialf...

2001
Ajay K. Sah Chebrolu P. Rao Pauli K. Saarenketo Kari Rissanen

4,6-O-Ethylidene-N-(2-hydroxybenzylidene)-D-glucopyranosylamine was synthesized and characterized using analytical, spectral and single-crystal X-ray diffraction methods. The anomeric nature of the saccharide moiety was proposed based on H NMR studies and was confirmed by the crystal structure. The lattice structure of this compound was compared with that of its analogues.

2003
T. Kikuchi

Semiconductor substrates made from single crystal materials need to be cut precisely along a fixed axis during the manufacturing process of the semiconductor components. Thus, measuring the crystal orientation is critical. For these measurements, Xray techniques demonstrate the highest precision. This report presents an outline of two popular X-ray diffraction techniques, the diffractometer and...

2014
Francesco Stellato Dominik Oberthür Mengning Liang Richard Bean Cornelius Gati Oleksandr Yefanov Anton Barty Anja Burkhardt Pontus Fischer Lorenzo Galli Richard A. Kirian Jan Meyer Saravanan Panneerselvam Chun Hong Yoon Fedor Chervinskii Emily Speller Thomas A. White Christian Betzel Alke Meents Henry N. Chapman

A new approach for collecting data from many hundreds of thousands of microcrystals using X-ray pulses from a free-electron laser has recently been developed. Referred to as serial crystallography, diffraction patterns are recorded at a constant rate as a suspension of protein crystals flows across the path of an X-ray beam. Events that by chance contain single-crystal diffraction patterns are ...

Journal: :Acta crystallographica. Section C, Crystal structure communications 2004
Sabine Schmid Wolfgang Schnick

Rubidium metaborate, Rb3B3O6, was obtained by the reaction of Rb2CO3 and BN using a radiofrequency furnace at a maximum reaction temperature of 1173 K. The crystal structure has been determined by single-crystal X-ray diffraction. The space group is R3c, with all atoms positioned on a twofold axis (Wyckoff site 18e). The ionic compound is isotypic with Na3B3O6, K3B3O6 and Cs3B3O6.

2008
Annika Gille Dieter Bläser Roland Boese Hans Preut Martin Hiersemann

The relative configuration of the title compound, C(11)H(18)O(3), was corroborated by single-crystal X-ray diffraction analysis. In the crystal, mol-ecules are linked via a O-H⋯O hydrogen bond and a chain of mol-ecules is formed along [010].

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