Preparations, x-ray crystal structures, EH band calculations, and physical properties of [(TTF)6(H)(XM12O40)(Et4N)] (M = tungsten, molybdenum; X = phosphorus, silicon): evidence of electron transfer between organic donors and polyoxometalates

1992 ◽  
Vol 4 (3) ◽  
pp. 666-674 ◽  
Author(s):  
L. Ouahab ◽  
M. Bencharif ◽  
A. Mhanni ◽  
D. Pelloquin ◽  
J. F. Halet ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Physical Properties ◽  
Crystal Structures ◽  
X Ray

ansa-Chromocene Complexes. 2. Isocyanide Derivatives of Cr(II) and Cr(III), Their Syntheses, X-ray Crystal Structures, and Physical Properties

2006 ◽  
Vol 25 (3) ◽  
pp. 719-732 ◽  
Author(s):  
Pamela J. Shapiro ◽  
Ralph Zehnder ◽  
David M. Foo ◽  
Philippe Perrotin ◽  
Peter H. M. Budzelaar ◽  
...  
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
X Ray ◽  
Derivatives Of

scholarly journals New Approaches to an Old Problem: Original Techniques in [FeFe]-hydrogenase Research

2020 ◽  
Author(s):  
Henrik Land ◽  
Moritz Senger ◽  
Gustav Berggren ◽  
Sven T. Stripp
Keyword(s):  
Carbon Monoxide ◽  
Electron Transfer ◽  
Proton Transfer ◽  
Ftir Spectroscopy ◽  
Crystal Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Approaches ◽  
Naturally Occurring ◽  
Biophysical Techniques

Even 20 years after the first crystal structures of [FeFe]-hydrogenase have been published, several aspects of biological hydrogen turnover are heatedly discussed. In this perspective, we give an overview on how the diversity of naturally occurring and artificially prepared, semi-synthetic [FeFe]-hydrogenases deepens our understanding of hydrogenase chemistry. In parallel, we cover new results from biophysical techniques that go beyond the scope of conventional electrochemistry, X-ray diffraction, EPR, and FTIR spectroscopy. Taking into account both proton transfer and electron transfer as well as the notorious sensitivity of [FeFe]-hydrogenases towards carbon monoxide, the discussion further touches upon the molecular proceedings of biological hydrogen turnover.

Synthesis, structure, and properties of the hexagermane Pri3Ge(GePh2)4GePri3

2014 ◽  
Vol 92 (6) ◽  
pp. 533-541 ◽  
Author(s):  
Kimberly D. Roewe ◽  
James A. Golen ◽  
Arnold L. Rheingold ◽  
Charles S. Weinert
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
Ring Opening ◽  
Polarized Light ◽  
Structure And Properties ◽  
Opposite Orientation ◽  
X Ray ◽  
Pale Yellow ◽  
Deep Blue ◽  
Irreversible Oxidation

The synthesis of the hexagermane Pri3Ge(GePh2)4GePri3 was achieved starting from the cyclotetragermane (Ph2Ge)4. Ring-opening of (Ph2Ge)4 with Br2 yielded Br(GePh2)4Br that was converted to H(GePh2)4H, and this material was treated with two equiv. of Pri3GeNMe2 to furnish Pri3Ge(GePh2)4GePri3 via the hydrogermolysis reaction. The X-ray crystal structures of (Ph2Ge)4, Br(GePh2)4Br and Pri3Ge(GePh2)4GePri3 were determined. The hexagermane Pri3Ge(GePh2)4GePri3 represents the longest structurally characterized linear oligogermane reported to date and exhibits physical properties that resemble those of the larger polygermane systems. The hexagermane is luminescent and interacts with polarized light, appearing pale yellow under one orientation of polarized light and deep blue under the opposite orientation. The electrochemistry of Pri3Ge(GePh2)4GePri3 was also explored, and this species exhibits the expected five irreversible oxidation waves.

scholarly journals Functional Perovskites: Structure-Properties Correlations

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
A.K. Bera ◽  
S.M. Yusuf
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
General Formula ◽  
Perovskite Structure ◽  
Large Range ◽  
Catalytic Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oxide Perovskite ◽  
Structure Properties

The perovskite structure with general formula ABX3 shows its multidimensional nature in regards to correlations of crystal structures with electronic, magnetic, optical, and catalytic properties. Perovskites are utilized in a large range of applications due to their tremendous versatility. In this chapter, structure-properties correlations in oxide perovskite compounds ABO3 having several functional properties are presented. In particular, neutron and x-ray diffraction results are described to reveal a direct correlation of several important physical properties, such as magnetic, multiferroic, electronic (CMR), and SOFC electrodes with the crystal structures.

A quinoxaline-fused tetrathiafulvalene derivative and its semiconducting charge-transfer salt: synthesis, crystal structures and physical properties

2014 ◽  
Vol 38 (5) ◽  
pp. 2052-2057 ◽  
Author(s):  
Yan Geng ◽  
Christoph Fiolka ◽  
Karl Krämer ◽  
Jürg Hauser ◽  
Vladimir Laukhin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Physical Properties ◽  
Single Crystal ◽  
Crystal Structures ◽  
Single Crystal Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Donor Acceptor ◽  
Tetrathiafulvalene Derivative

A quinoxaline-fused tetrathiafulvalene (TTF) derivative 1 has been synthesized to form a compact and planar π-conjugated donor–acceptor (D–π–A) ensemble, and its single crystal structure has been determined by X-ray diffraction.

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