Isolable Silylene Anion Radical:  Structural Characteristics in the Solid State and in Solution

2007 ◽  
Vol 129 (19) ◽  
pp. 6096-6097 ◽  
Author(s):  
Shigeyoshi Inoue ◽  
Masaaki Ichinohe ◽  
Akira Sekiguchi
Keyword(s):  
Solid State ◽  
Anion Radical ◽  
Structural Characteristics

Organoantimony compounds. I. Infrared spectra of some trimethyl- and triphenyl-antimony derivatives

1969 ◽  
Vol 47 (8) ◽  
pp. 1423-1427 ◽  
Author(s):  
R. G. Goel ◽  
P. N. Joshi ◽  
D. R. Ridley ◽  
R. E. Beaumont
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Structural Characteristics ◽  
Anionic Group ◽  
Polymeric Structures

Organoantimony compounds of the type R3SbX and (R3Sb)2OX, where R is methyl or phenyl, and X is a bivalent anionic group such as SeO4, CrO4, or C2O4, have been prepared. Structural characteristics of these compounds have been determined by studying their infrared spectra in the solid state between 4000 and 250 cm−1. The spectral results indicate that in both types of compounds the anion X is coordinated to the R3Sb or (R3Sb—O—SbR3) group resulting in non-ionic, five coordinate, polymeric structures.

scholarly journals Structural characteristics of oligomers formed by pyroglutamate-modified amyloid β peptides studied by solid-state NMR

2020 ◽  
Vol 22 (29) ◽  
pp. 16887-16895 ◽  
Author(s):  
Holger A. Scheidt ◽  
Anirban Das ◽  
Alexander Korn ◽  
Martin Krueger ◽  
Sudipta Maiti ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Structural Characteristics ◽  
Amyloid Β ◽  
Wild Type

Structure of oligomers of truncated and pyroglutamate modified amyloid β variants is similar to the wild type.

Synthesis and characterization of a cadmium(II)–organic supramolecular coordination compound based on the multifunctional 2-amino-5-sulfobenzoic acid ligand

2016 ◽  
Vol 72 (12) ◽  
pp. 939-946 ◽  
Author(s):  
Gan-Yin Yuan ◽  
Lei Zhang ◽  
Meng-Jie Wang ◽  
Kou-Lin Zhang
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Coordination Compound ◽  
Coordination Compounds ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Distorted Octahedral Geometry ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
Supramolecular Coordination

Much attention has been paid by chemists to the construction of supramolecular coordination compounds based on the multifunctional ligand 5-sulfosalicylic acid (H3SSA) due to the structural and biological interest of these compounds. However, no coordination compounds have been reported for the multifunctional amino-substituted sulfobenzoate ligand 2-amino-5-sulfobenzoic acid (H2asba). We expected that H2asba could be a suitable building block for the assembly of supramolecular networks due to its interesting structural characteristics. The reaction of cadmium(II) nitrate with H2asba in the presence of the auxiliary flexible dipyridylamide ligandN,N′-bis[(pyridin-4-yl)methyl]oxamide (4bpme) under ambient conditions formed a new mixed-ligand coordination compound, namely bis(3-amino-4-carboxybenzenesulfonato-κO1)diaquabis{N,N′-bis[(pyridin-4-yl)methyl]oxamide-κN}cadmium(II)–N,N′-bis[(pyridin-4-yl)methyl]oxamide–water (1/1/4), [Cd(C7H6NO5S)2(C14H14N4O2)2(H2O)2]·C14H14N4O2·4H2O, (1), which was characterized by single-crystal and powder X-ray diffraction analysis (PXRD), FT–IR spectroscopy, thermogravimetric analysis (TG), and UV–Vis and photoluminescence spectroscopic analyses in the solid state. The central CdIIatom in (1) occupies a special position on a centre of inversion and exhibits a slightly distorted octahedral geometry, being coordinated by two N atoms from two monodentate 4bpme ligands, four O atoms from two monodentate 4-amino-3-carboxybenzenesulfonate (Hasba−) ligands and two coordinated water molecules. Interestingly, complex (1) further extends into a threefold polycatenated 0D→2D (0D is zero-dimensional and 2D is two-dimensional) interpenetrated supramolecular two-dimensional (4,4) layer through intermolecular hydrogen bonding. The interlayer hydrogen bonding further links adjacent threefold polycatenated two-dimensional layers into a three-dimensional network. The optical properties of complex (1) indicate that it may be used as a potential indirect band gap semiconductor material. Complex (1) exhibits an irreversible dehydration–rehydration behaviour. The fluorescence properties have also been investigated in the solid state at room temperature.

scholarly journals Understanding the correlation between structure and dynamics of clocortolone pivalate by solid state NMR measurement

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4310-4321 ◽  
Author(s):  
Krishna Kishor Dey ◽  
Shovanlal Gayen ◽  
Manasi Ghosh
Keyword(s):  
Solid State ◽  
Adverse Effects ◽  
Topical Corticosteroid ◽  
Stratum Corneum ◽  
Solid State Nmr ◽  
Structural Characteristics ◽  
Structure And Dynamics ◽  
High Penetration

Structural characteristics of clocortolone pivalate are unique in the topical corticosteroid field having high penetration power through the stratum corneum of skin as well as low corticosteroid-related adverse effects.

Influence of Ta substitution for Nb in Zn3Nb2O8 and the impact on the crystal structure and microwave dielectric properties

2016 ◽  
Vol 45 (29) ◽  
pp. 11807-11816 ◽  
Author(s):  
Yonggui Zhao ◽  
Ping Zhang
Keyword(s):  
Crystal Structure ◽  
Dielectric Properties ◽  
Solid State ◽  
Solid State Reaction ◽  
Structural Characteristics ◽  
Microwave Dielectric Properties ◽  
Reaction Route ◽  
Microwave Dielectric ◽  
Solid State Reaction Route ◽  
The Impact

Zn3(Nb1−xTax)2O8 (x = 0.02–0.10) ceramics were prepared via a solid-state reaction route and the dependence of their microwave dielectric properties on their structural characteristics were investigated.

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