Single-crystal structures and electron density distributions of ethane, ethylene and acetylene. III. Single-crystal X-ray structure determination of ethylene at 85 K

1979 ◽  
Vol 35 (11) ◽  
pp. 2593-2601 ◽  
Author(s):  
G. J. H. Nes ◽  
A. Vos
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Electron Density ◽  
Structure Determination ◽  
X Ray ◽  
Density Distributions ◽  
Single Crystal Structures

1,3-Di(alkoxy)imidazolium-based Ionic Liquids: Improved Synthesis and Crystal Structures

2013 ◽  
Vol 66 (3) ◽  
pp. 391 ◽  
Author(s):  
Carmen Froschauer ◽  
Robert Salchner ◽  
Gerhard Laus ◽  
Hedda K. Weber ◽  
Richard Tessadri ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Single Crystal ◽  
Crystal Structures ◽  
Structure Determination ◽  
One Pot ◽  
Synthetic Pathway ◽  
X Ray

A new and convenient synthetic pathway to 1,3-di(alkoxy)imidazolium bis(trifluoromethylsulfonyl)amides and novel 1,3-di(alkoxy)imidazolium tetrachloroferrates was developed. As an intermediate isolation step of the respective hexafluorophosphates was required in previously reported preparations, they suffered from low overall yields and additional expense. The use of FeCl3/HCl resulted in substantially improved yields and allows one-pot preparations with good scalability. Results of single-crystal X-ray structure determination of the new tetrachloroferrate salts are discussed.

Single-crystal structure determination of LaNi5–xInx and LaNi9–xIn2+x

2020 ◽  
Vol 75 (6-7) ◽  
pp. 553-557
Author(s):  
Yaroslav Kalychak ◽  
Mariya Dzevenko ◽  
Volodymyr Babizhetskyy ◽  
Marek Daszkiewicz ◽  
Lubomir Gulay
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Single Crystal ◽  
Crystal Structures ◽  
Ternary Compound ◽  
Structure Determination ◽  
Structure Investigation ◽  
Space Group ◽  
X Ray

AbstractThe crystal structures of the solid solution LaNi5–xInx (x = 0.51) and the ternary compound LaNi9–xIn2+x (x = 0.80) have been investigated by single-crystal X-ray data. The LaNi5–xInx phase is isotypic with CaCu5: space group P6/mmm, a = 5.042(2), c = 4.009(1) Å. The crystal structure investigation of LaNi9–xIn2+x (x = 0.80) was performed at T = 295 and 100 K: YNi9In2 type, space group P4/mbm, a = 8.3976(3), c = 5.0439(3) Å for T = 295 K and a = 8.3814(2), c = 5.0352(2) Å for T = 100 K. The lanthanum atoms are located on split positions 2a (0 0 0) and 4e (0 0 0.05).

Studies of Australian soft corals. XXXII. The structure determination of degraded xenicin-type diterpenes from several Efflatounaria species

1983 ◽  
Vol 36 (11) ◽  
pp. 2279 ◽  
Author(s):  
BF Bowden ◽  
JC Coll ◽  
VA Patrick ◽  
DM Tapiolas
Keyword(s):  
Single Crystal ◽  
Chemical Transformation ◽  
Structure Determination ◽  
High Field ◽  
Soft Corals ◽  
X Ray ◽  
The Third

Three new diterpenes have been isolated from soft corals of the genus Efflatounaria (Coelenterata, Octocorallia, Alcyonacea, Xeniidae). The structure of the first compound (4) was elucidated on the basis of high-field 1H n.m.r. spectroscopy while that of the second metabolite (5) was determined by single-crystal X-ray analysis. The third diterpene (6) was structurally related to (5), and its structure was confirmed by chemical transformation. All three diterpenes can be derived from xenicin-type precursors, by cleavage and recyclization.

Acid-catalyzed cyclization of 3,3',4,4'-tetrahydro-1,1'-binaphthyl and single-crystal x-ray structure determination of a polycyclic stable ozonide

1984 ◽  
Vol 49 (6) ◽  
pp. 1030-1033 ◽  
Author(s):  
Thomas K. Dobbs ◽  
Arnold R. Taylor ◽  
Julie A. Barnes ◽  
Belma D. Iscimenler ◽  
Elizabeth M. Holt ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structure Determination ◽  
X Ray ◽  
Acid Catalyzed
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