New Molecular Assemblies of Redox Isomers, [CrIII(X4SQ)3-n(X4Cat)n]-n(X = Cl and Br;n= 0, 1, and 2), with Metallocenium Cations, [MIIICp2]+(M = Co and Fe):  X-ray Crystal Structures and Physical Properties

2001 ◽  
Vol 40 (1) ◽  
pp. 146-156 ◽  
Author(s):  
Ho-Chol Chang ◽  
Hitoshi Miyasaka ◽  
Susumu Kitagawa
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
Molecular Assemblies ◽  
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

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.

Synthesis, physical properties and X-ray crystal structures of a series of nickel complexes based on n-alkylthio-substituted ethylene-1,2-dithiolene ligands

1994 ◽  
Vol 4 (12) ◽  
pp. 1861-1866 ◽  
Author(s):  
A. Charlton ◽  
C. A. S. Hill ◽  
A. E. Underhill ◽  
K. M. A. Malik ◽  
M. B. Hursthouse ◽  
...  
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
Nickel Complexes ◽  
X Ray

ansa-Nickelocenes by the Ring-Closing Metathesis Route:  Syntheses, X-ray Crystal Structures, and Physical Properties

2006 ◽  
Vol 25 (21) ◽  
pp. 5076-5082 ◽  
Author(s):  
Włodzimierz Buchowicz ◽  
Lucjan B. Jerzykiewicz ◽  
Anna Krasińska ◽  
Serena Losi ◽  
Antoni Pietrzykowski ◽  
...  
Keyword(s):  
Physical Properties ◽  
Crystal Structures ◽  
Ring Closing Metathesis ◽  
X Ray

Transmission electron microscope studies in special ceramics

1978 ◽  
Vol 36 (1) ◽  
pp. 268-269
Author(s):  
A. Zangvil ◽  
L.J. Gauckler ◽  
G. Schneider ◽  
M. Rühle
Keyword(s):  
Phase Diagrams ◽  
Crystal Structures ◽  
Thin Foil ◽  
Limited Extent ◽  
Complex Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
Lattice Resolution

The use of high temperature special ceramics which are usually complex materials based on oxides, nitrides, carbides and borides of silicon and aluminum, is critically dependent on their thermomechanical and other physical properties. The investigations of the phase diagrams, crystal structures and microstructural features are essential for better understanding of the macro-properties. Phase diagrams and crystal structures have been studied mainly by X-ray diffraction (XRD). Transmission electron microscopy (TEM) has contributed to this field to a very limited extent; it has been used more extensively in the study of microstructure, phase transformations and lattice defects. Often only TEM can give solutions to numerous problems in the above fields, since the various phases exist in extremely fine grains and subgrain structures; single crystals of appreciable size are often not available. Examples with some of our experimental results from two multicomponent systems are presented here. The standard ion thinning technique was used for the preparation of thin foil samples, which were then investigated with JEOL 200A and Siemens ELMISKOP 102 (for the lattice resolution work) electron microscopes.

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