STUDIES ON THE CONFORMATIONS OF 4-N,N-DIMETHYLAMINOTHIANES AND THE CORRESPONDING METHIODIDES. EVIDENCE FROM A SINGLE CRYSTAL X-RAY DIFFRACTION ANALYSIS THAT A TWIST-BOAT CONFORMER EXISTS IN THE SOLID STATE FOR TRIMETHYL-[2,2-DIMETHYL-trans−6-PHENYLTHIAN-r-4-YL]-AMMONIUM IODIDE

1983 ◽  
Vol 17 (3) ◽  
pp. 343-365 ◽  
Author(s):  
Pullachipatti K. Subramanian ◽  
Kondareddiar Ramalingam ◽  
Nantelle S. Pantaleo ◽  
Dick Van Der Helm ◽  
Nagichettiar Satyamurthy ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Ammonium Iodide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Twist Boat

meso–meso Directly-linked trimeric and pentameric electron-deficient porphyrin–hexaphyrin hybrid arrays

2016 ◽  
Vol 20 (01n04) ◽  
pp. 245-253 ◽  
Author(s):  
Hirotaka Mori ◽  
Atsuhiro Osuka
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Structures

meso–meso Directly-linked trimeric and pentameric porphyrin–hexaphyrin hybrid arrays 5 and 6 comprising of electron-deficient porphyrin units were prepared by cross-condensation of monomeric and dimeric electron-deficient meso-formyl porphyrins with a tripyrrane. The solid-state structures of 5 and 6 have been determined by single crystal X-ray diffraction analysis. The latter is the largest crystal structure of meso–meso linked multiporphyrinic array analogues reported to date.

A theoretical insight on the anion···anion interactions observed in the solid state structure of a herero-trinuclear complex

CrystEngComm ◽  
2021 ◽  
Author(s):  
Kousik Ghosh ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Analytical Techniques ◽  
Trinuclear Complex ◽  
State Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Potassium Complex ◽  
Theoretical Insight

A heteronuclear cobalt(III)/potassium complex, [(L1)2Co2K(L2)2], {Where, H2L1 = N,N-bis(3-ethoxysalicylidene)2,2-dimethyl-1,3-propanediamine and HL2 = 3-ethoxysalicylaldehyde}, has been synthesized and characterized by several analytical techniques including single crystal X-ray diffraction analysis. The energetic...

scholarly journals Bismuth⋅⋅⋅π arene interaction in [Bi{OC6H4(CH2C6H5)-2}3]2

2019 ◽  
Vol 42 (1) ◽  
pp. 46-50
Author(s):  
Felix Roschke ◽  
Günther Thiele ◽  
Stefanie Dehnen ◽  
Michael Mehring
Keyword(s):  
Solid State ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Structural Feature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dimeric Unit ◽  
Characteristic Structural Feature

Abstract We report on the synthesis of a new bismuth aryloxide molecule Bi[OC6H4(CH2C6H5)-2]3 (1), which was characterized by NMR and IR spectroscopy as well as single-crystal X-ray diffraction analysis. A characteristic structural feature is the dimeric unit with a central Bi2O2 core resulting from μ-binding phenolates. In addition, both bismuth atoms show a Bi⋅⋅⋅π arene interaction with a quite short Bi⋅⋅⋅πcentroid distance of 3.11 Å in the solid state.

HIGHLY STRUCTURE-CONFINED Y:Ba:Cu:O SUPERCONDUCTORS PREPARED BY COPRECIPITATION TECHNIQUES

1990 ◽  
Vol 04 (06) ◽  
pp. 423-431 ◽  
Author(s):  
P. Y. HSIEH ◽  
JAMES YE ◽  
Z. SHI ◽  
W. K. CHU
Keyword(s):  
Heat Treatment ◽  
Critical Temperature ◽  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Critical Current ◽  
Solid State Reactions ◽  
X Ray Diffraction ◽  
Solid Reaction ◽  
X Ray

Results from the study of highly structure-confined YBa 2 Cu 3 O 7−x superconductors synthesized by different coprecipitation processes are presented, with the superconducting samples made from oxalic-nitrate salts demonstrating higher critical temperature and critical current in comparison with solid reaction oxides. Among the measured samples, the critical temperature, T c , is typically 90–95 K (T c (maximum)=105 K) and the critical current is 1.2 – 1.9 × 104 A/cm 2 at 4.5 K and 1200 A/cm 2 at 78 K. Peak patterns similar to those of solid-state reactions by X-ray diffraction analysis have also been found although these spectra show considerably broadness. Superconductors resulted from coprecipitation techniques with no calcining (heat-treatment) processing can be attained. Further studies on producing single-crystal with increasing critical current and temperature are discussed.

Synthesis of Fluorine-Containing Tetraarylanthracenes via Ruthenium-Catalyzed C–O or C–F Arylation and their Crystal Structures

Synlett ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 2609-2613 ◽  
Author(s):  
Fumitoshi Kakiuchi ◽  
Akiko Izumoto ◽  
Hikaru Kondo ◽  
Takuya Kochi
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Fluorescence Spectra ◽  
Crystal Packing ◽  
Spectroscopic Studies ◽  
Carbonyl Groups ◽  
X Ray Diffraction ◽  
Aromatic Ketones ◽  
X Ray

Tetraarylanthracenes containing several fluoro groups were synthesized using the ruthenium-catalyzed C–O or C–F arylation with arylboronates and their structural and spectroscopic studies were conducted. The RuH2(CO)(PPh3)3-catalyzed C–O arylation of aromatic ketones was found to be effective for the introduction of aryl groups containing multiple fluoro groups. Anthracenes possessing fluorinated aryl groups were prepared in two steps from 1,4,5,8-tetramethoxyanthraquinone by C–O arylation and reduction of the carbonyl groups. A tetraphenylanthracene containing a fluorinated anthracene moiety was also prepared using C–F phenylation of octafluoroanthraquinone. Single-crystal X-ray diffraction analysis showed that the positions of fluoro groups on the tetraarylanthracenes lead to notable difference in the crystal packing structures. The larger difference between the tetraarylanthracenes was observed in the fluorescence spectra in the solid state than those in chloroform.

scholarly journals 2-Pyridylselenenyl versus 2-Pyridyltellurenyl Halides: Symmetrical Chalcogen Bonding in the Solid State and Reactivity towards Nitriles

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2350
Author(s):  
Ivan V. Buslov ◽  
Alexander S. Novikov ◽  
Victor N. Khrustalev ◽  
Mariya V. Grudova ◽  
Alexey S. Kubasov ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Oxidative Cleavage ◽  
Cyclization Product ◽  
X Ray Diffraction ◽  
X Ray

The synthesis of 2-pyridyltellurenyl bromide via Br2 oxidative cleavage of the Te–Te bond of dipyridylditelluride is reported. Single-crystal X-ray diffraction analysis of 2-pyridyltellurenyl bromide demonstrated that the Te atom of 2-pyridyltellurenyl bromide was involved in four different noncovalent contacts: Te⋯Te interactions, two Te⋯Br ChB, and one Te⋯N ChB contact forming 3D supramolecular symmetrical framework. In contrast to 2-pyridylselenenyl halides, the Te congener does not react with nitriles furnishing cyclization products. 2-Pyridylselenenyl chloride was demonstrated to easily form the corresponding adduct with benzonitrile. The cyclization product was studied by the single-crystal X-ray diffraction analysis, which revealed that in contrast to earlier studied cationic 1,2,4-selenadiazoles, here we observed that the adduct with benzonitrile formed supramolecular dimers via Se⋯Se interactions in the solid state, which were never observed before for 1,2,4-selenadiazoles.

Synthesis of 4-(3-coumarinyl)-3-benzyl-4-thiazolin-2-one 4-methylbenzylidenehydrazone and determination of the isomeric structure by X-ray analysis

2003 ◽  
Vol 218 (12) ◽  
Author(s):  
Süheyla Özbey ◽  
Nilgün Karalı ◽  
Aysel Gürsoy
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Spectral Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Isomeric Structure ◽  
Elemental Analyses

AbstractIn this study 4-(3-coumarinyl)-3-benzyl-4-thi azolin-2-one 4-methylbenzylidenehydrazone 3 was synthesised. An independent proof of the thiazolylhydrazone structure of 3 was achieved by single crystal X-ray diffraction analysis. Elemental analyses and spectral data (IR,

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