Synthesis, single crystal X-ray structure and W-band (95 GHz) EPR spectroscopy of a new anionic isoindoline aminoxyl: synthesis and characterisation of some derivatives

2000 ◽  
pp. 1285-1291 ◽  
Author(s):  
Steven E. Bottle ◽  
Duncan G. Gillies ◽  
David L. Hughes ◽  
Aaron S. Micallef ◽  
Alex I. Smirnov ◽  
...  
Keyword(s):  
Single Crystal ◽  
Epr Spectroscopy ◽  
X Ray ◽  
W Band

scholarly journals Eightfold Electrophilic Methylation of Octacyanotungstate [W(CN)8]4−/3−: Preparation of Homoleptic, Eight-coordinate Methylisocyanide Complexes [W(CNMe)8]4+/5+

2021 ◽  
Author(s):  
Malte Sellin ◽  
Susanne Margot Rupf ◽  
Ulrich Abram ◽  
Moritz Malischewski
Keyword(s):  
Sulfur Dioxide ◽  
Single Crystal ◽  
Epr Spectroscopy ◽  
X Ray Diffraction ◽  
Liquid Sulfur ◽  
Methyl Fluoride ◽  
X Ray ◽  
First Time ◽  
Ir And Raman ◽  
Methyl Triflate

Homoleptic eight-fold coordinated methylisocyanide complexes of W(IV) and W(V) have been prepared for the first time. The reaction of [NBu4]4[W(CN)8] with methyl triflate MeOTf gives [W(CNMe)8][OTf]4. The even stronger methylating mixture of methyl fluoride MeF and arsenic pentafluoride AsF5 in liquid sulfur dioxide SO2 is able to fully alkylate both [NBu4]4[W(CN)8] and [NBu4]3[W(CN)8]. The paramagnetic octakis(methylisocyanide)- tungsten(V) [W(CNMe)8][AsF6]5 is thermally highly unstable above −30 °C. All compounds have been characterized via single-crystal X-ray diffraction, IR and Raman, as well as NMR or EPR spectroscopy<br>

scholarly journals Eightfold Electrophilic Methylation of Octacyanotungstate [W(CN)8]4−/3−: Preparation of Homoleptic, Eight-coordinate Methylisocyanide Complexes [W(CNMe)8]4+/5+

2021 ◽  
Author(s):  
Malte Sellin ◽  
Susanne Margot Rupf ◽  
Ulrich Abram ◽  
Moritz Malischewski
Keyword(s):  
Sulfur Dioxide ◽  
Single Crystal ◽  
Epr Spectroscopy ◽  
X Ray Diffraction ◽  
Liquid Sulfur ◽  
Methyl Fluoride ◽  
X Ray ◽  
First Time ◽  
Ir And Raman ◽  
Methyl Triflate

Homoleptic eight-fold coordinated methylisocyanide complexes of W(IV) and W(V) have been prepared for the first time. The reaction of [NBu4]4[W(CN)8] with methyl triflate MeOTf gives [W(CNMe)8][OTf]4. The even stronger methylating mixture of methyl fluoride MeF and arsenic pentafluoride AsF5 in liquid sulfur dioxide SO2 is able to fully alkylate both [NBu4]4[W(CN)8] and [NBu4]3[W(CN)8]. The paramagnetic octakis(methylisocyanide)- tungsten(V) [W(CNMe)8][AsF6]5 is thermally highly unstable above −30 °C. All compounds have been characterized via single-crystal X-ray diffraction, IR and Raman, as well as NMR or EPR spectroscopy<br>

scholarly journals Evaluating a dispersion of sodium in sodium chloride for the synthesis of low-valent nickel complexes

2021 ◽  
Author(s):  
Elliot Johnson Humphrey ◽  
Alan Kennedy ◽  
Stephen Sproules ◽  
David Nelson
Keyword(s):  
Sodium Chloride ◽  
Nmr Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Epr Spectroscopy ◽  
Nickel Complexes ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Valent

The use of a sodium in sodium chloride dispersion is systematically evaluated for the synthesis of nickel(0) and nickel(I) complexes from readily-prepared nickel(II) precursors. A variety of complexes with phosphine and bipyridine-type ligands were accessed, although some reactions were found to produce mixtures of nickel(0) and nickel(I), and yields were highly variable. Several new nickel(I) complexes were obtained, and these were characterised using techniques including NMR spectroscopy, EPR spectroscopy, and single crystal X-ray diffraction analysis.

scholarly journals SITE PREFERENCE OF Gd IN SYNTHETIC FLUORAPATITE BY SINGLE-CRYSTAL W-BAND EPR AND X-RAY REFINEMENT OF THE STRUCTURE: A COMPARATIVE STUDY

2002 ◽  
Vol 40 (4) ◽  
pp. 1103-1112 ◽  
Author(s):  
Y. Pan ◽  
M. E. Fleet ◽  
N. Chen ◽  
J. A. Weil ◽  
M. J. Nilges
Keyword(s):  
Comparative Study ◽  
Single Crystal ◽  
Site Preference ◽  
X Ray ◽  
W Band

Dioxygen binding at a four-coordinate cobaltous porphyrin site in a metal–organic framework: structural, EPR, and O2 adsorption analysis

2016 ◽  
Vol 3 (4) ◽  
pp. 536-540 ◽  
Author(s):  
Audrey T. Gallagher ◽  
Margaret L. Kelty ◽  
Jesse G. Park ◽  
John S. Anderson ◽  
Jarad A. Mason ◽  
...  
Keyword(s):  
Single Crystal ◽  
Epr Spectroscopy ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
O2 Adsorption ◽  
Adsorption Analysis ◽  
Metal Organic ◽  
Organic Framework

The binding of O2 at a four-coordinate cobaltous porphyrin site within a metal–organic framework is examined through single-crystal X-ray diffraction, EPR spectroscopy, and O2 adsorption measurements.

scholarly journals Combining EPR spectroscopy and X-ray crystallography to elucidate the structure and dynamics of conformationally constrained spin labels in T4 lysozyme single crystals

2017 ◽  
Vol 19 (31) ◽  
pp. 20723-20734
Author(s):  
Philipp Consentius ◽  
Ulrich Gohlke ◽  
Bernhard Loll ◽  
Claudia Alings ◽  
Udo Heinemann ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Epr Spectroscopy ◽  
Spin Labels ◽  
T4 Lysozyme ◽  
Conformationally Constrained ◽  
X Ray ◽  
X Ray Crystallography ◽  
Structure And Dynamics

Unraveling structural and dynamic details of spin labeled proteins using a combination of single crystal EPR spectroscopy and X-ray crystallography.

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

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