[PDF] Top 20 2,6 Dimethylpyrazine at 20 K: a neutron diffraction study
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2,6 Dimethylpyrazine at 20 K: a neutron diffraction study
... For methyl groups the threefold symmetry ensures strict topological degeneracy and rotational tunnelling has been observed with inelastic neutron-scattering techni- ques (INS) in many crystals (Press, 1981; ... See full document
7
2,6 Dimethylpyrazine at 5 K: a neutron diffraction study
... the methyl groups are quite localized at all temperatures. For each methyl group, one of the protons is almost in the molecular ...both methyl groups correspond quite well to those anticipated for ... See full document
6
Structure and dynamics of aqueous 2 propanol mixtures: a THz TDS, NMR and neutron diffraction study
... bulk 2-propanol structures, ...no 2-propanol/water networks ...and 2 were fixed to the experimentally derived values of t water = ...t 2-propanol = ...H 2 O), as shown in Table S2 ... See full document
11
Pressure-induced polymorphism of caprolactam : a neutron diffraction study
... X-ray diffraction using a crystal grown from an evaporative crystallisation using ethyl acetate as the ...the diffraction was of lower quality (multiple weaker crystals) than we observed from the unit cell ... See full document
16
Methyl 2 benzyloxy 6 (2 methyl 1,3 dioxolan 2 yl)benzoate monohydrate
... The title compound, (I) (Fig. 1), is a key intermediate in the synthesis of pesticides such as the herbicide KIH-6127 (Tamaru & Saito, 1996). In this paper, we report the results of an X-ray diffraction ... See full document
6
A neutron laue diffraction study of endothiapepsin: Implications for the aspartic proteinase mechanism
... Extent of Deuteration. While deuteration of the crystals was undertaken primarily to reduce incoherent scatter from bulk solvent, the neutron data show that the endothiapepsin molecule itself has become ... See full document
9
Glycine zinc sulfate pentahydrate: redetermination at 10 K from time of flight neutron Laue diffraction
... The overall three-dimensional framework is completed by a variety of hydrogen bonds with a range of strengths (Table 3). Fig. 4 shows the spatial relationship of the main structural elements. The majority of the hydrogen ... See full document
13
Study of neutron fundamental properties in the perfect crystal optics and diffraction
... Neutrons satisfied Bragg’s condition for the first crystal are completely reflected by its entrance face and cannot reach the second crystal and so the detector. The neutrons, propagating in the working crystal, are ... See full document
7
Synthesis and electrochemical study of CoNi2S4 as a novel cathode material in a primary Li thermal battery
... ◦ 2 θ range for 1 hour, with a step size of ...Powder neutron diffraction data were collected on the High Resolution Powder Diffractometer (HRPD) at the ISIS neutron source, Rutherford ... See full document
5
Melamine (1,3,5 triazine 2,4,6 triamine): a neutron diffraction study at 14 K
... The compound has been studied extensively with spectro- scopy techniques, either in the solid state or in the gas phase, with Raman and IR (Schneider & Schrader, 1975; Meier et al., 1995; Wang et al., 1997) and ... See full document
6
Low temperature (110 K) single crystal neutron diffraction study of (±) camphoric anhydride
... by neutron diffraction are usually longer than those obtained from X-ray ...present neutron diffraction study are also longer than those obtained in earlier X-ray ...for neutron ... See full document
7
Magnetic ground state of the two isostructual polymeric quantum magnets [Cu(HF2)(pyrazine)2]SbF6 and [Co(HF2)(pyrazine)2]SbF6 investigated with neutron powder diffraction
... that neutron powder diffraction can be used as local probe of the ordered Cu(II) moments to detect the macroscopic effects of quantum fluctuations in low di- mensional coordination ... See full document
16
Neutron diffraction study of in situ-reinforced silicon nitride during creep
... Regarding hkl-dependent CTE properties, the 2003 data are considered in the following discussion, due to the greater confidence inspired by the improved ALPHA fitting. As shown in Figure 19 and Table XIII, the c-axis of ... See full document
154
Sub-atomic resolution X-ray crystallography and neutron crystallography: promise, challenges and potential
... The increase in X-ray brilliance has required major improvement in the X-ray detectors. At the second-generation sources such as SRS (Daresbury), Photon Factory and NSLS the early data were collected on photographic ... See full document
11
Methyl 3 benzoyl 3 (6 methyl 2 pyridyl) 2 phenylacrylate
... Photo-induced oxygenation reactions of indolizine derivatives have been intensively investigated (Tian et al., 2001). In a continuation of this work, we report here the crystal structure of the title compound, (I), which ... See full document
8
2 (6 Methyl 2 pyridyl) 1,1 diphenylethanol
... C12 0.0469 (10) 0.0524 (12) 0.1050 (18) −0.0139 (9) 0.0211 (11) 0.0117 (11) C13 0.0443 (9) 0.0479 (10) 0.0662 (11) −0.0051 (8) 0.0193 (8) 0.0040 (9) C14 0.0393 (8) 0.0325 (8) 0.0418 (8) 0.0032 (6) 0.0075 ... See full document
11
Chemical composition and flavour development of cocoa products by thermal and enzymatic technologies
... Aldehydes Methyl-pyrazine 2.5-Dimethyl-pyrazine Ethyl-pyrazine 2.3-Dimethyl-pyrazine 2-Ethyl-6-methy pyrazine Trimethyl-pyrazine 3-Ethyl-2.5-dimethyl-pyrazine Tetramethyl-pyrazine 3.5-Di[r] ... See full document
234
Complex magnetic ordering in the oxide selenide Sr2Fe3Se2O3
... 300 K on the WISH instrument 18 at the ISIS Pulsed Neutron and Muon Facility, UK with the samples contained in indium-sealed thin-walled vanadium ...Electron diffraction measurements at EMAT, ... See full document
30
Thermodynamic properties, electron spin resonance and underlying spin model in Cu3Y(SeO3)2O2Cl
... spallation neutron source, Rutherford Appleton ...the neutron beam. The sample was placed into a 4 He cryostat and diffraction data were taken over the temperature range 5 – 280 ... See full document
16
6 Iodo 2 methyl 1,3 benzothiazole
... deviation from the mean plane being for the I atom [0.075 (3) A ˚ ]. The crystal structure is mainly stabilized by intermolecular C—I N halogen bonds, forming zigzag supramolecular chains in [101]. Relatively short ... See full document
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