New synthetic route to organophosphorous ruthenium dihydride complexes. X-ray crystal structure of cis-H2Ru(Ph2PCH2CH2PPh2)2·C6H6

1979 ◽  
Vol 37 ◽  
pp. L521-L522 ◽  
Author(s):  
P. Pertici ◽  
G. Vituli ◽  
W. Porzio ◽  
M. Zocchi
Keyword(s):  
Crystal Structure ◽  
Synthetic Route ◽  
X Ray ◽  
Ruthenium Dihydride

A 35-year-old mystery solved: a facile synthetic route and structural confirmation of tetrachlorobis(diethyl ether)tungsten(IV)

2021 ◽  
Vol 77 (4) ◽  
Author(s):  
Thomas E. Shaw ◽  
Alfred P. Sattelberger ◽  
Titel Jurca
Keyword(s):  
Crystal Structure ◽  
Diethyl Ether ◽  
Thermal Instability ◽  
Room Temperature ◽  
Surface Characteristics ◽  
Hirshfeld Surface ◽  
Asymmetric Unit ◽  
Synthetic Route ◽  
X Ray ◽  
Elemental Analyses

The true identity of the diethyl ether adduct of tungsten(IV) chloride, WCl4(Et2O) x , has been in doubt since 1985. Initially postulated as the bis-adduct, WCl4(Et2O)2, questions arose when elemental analyses were more in line with a mono-ether adduct, viz. WCl4(Et2O). It was proposed that this was due to the thermal instability of the bis-adduct. Here, we report the room-temperature X-ray crystal structure and Hirshfeld surface characteristics of trans-tetrachloridobis(diethyl ether)tungsten(IV), trans-WCl4(Et2O)2 or trans-[WCl4(C4H10O)2]. The compound crystallizes, with half of the molecule in the asymmetric unit, in the centrosymmetric space group P21/n. The W—O distance is 2.070 (2) Å, while the W—Cl distances are 2.3586 (10) and 2.3554 (10) Å.

Improved Synthetic Route to Unsymmetrically Substituted Phosphinimino-phosphonium Salts. Crystal Structure of Tri-n-butyl- [tris(diethylamino)phosphinimino]phosphonium Chloride

2001 ◽  
Vol 56 (12) ◽  
pp. 1319-1321 ◽  
Author(s):  
R. Bartsch ◽  
M. Freytag ◽  
S. Goller ◽  
R G. Jones ◽  
R. Schmutzler
Keyword(s):  
Crystal Structure ◽  
Low Temperature ◽  
Title Compound ◽  
Phosphonium Salts ◽  
Synthetic Route ◽  
X Ray ◽  
Bond Lengths ◽  
Phosphonium Chloride

Abstract The title compound was prepared from tri-n-butyl-chlorophosphonium chloride and N-tri-methylsilyl-tris(diethylamino)-phosphinimine. A low temperature X-ray crystal structure de­termination revealed PN bond lengths of 156.1(2) and 158.0(2) pm, with a PNP angle of 149.36(17)°.

scholarly journals A New Synthetic Route to (Trifluoromethyl)quinolines: Nickel-Catalyzed Insertion of an Alkyne into an Aromatic C–S Bond by Formation of a Thianickelacycle and Thermal Desulfidation

Synlett ◽  
2021 ◽  
Author(s):  
Takuya Kurahashi ◽  
Seijiro Matsubara ◽  
Tasuku Inami
Keyword(s):  
Crystal Structure ◽  
Fine Structure ◽  
Sulfur Atom ◽  
Crystal Structure Analysis ◽  
Insertion Reaction ◽  
Synthetic Route ◽  
X Ray ◽  
X Ray Absorption ◽  
Single Crystal Structure Analysis

AbstractWe have developed a nickel-catalyzed insertion reaction of an alkyne into a 2-(trifluoromethyl)-1,3-benzothiazole to give a seven-membered benzothiazepine that is converted into a 2-(trifluoromethyl)quinoline by thermal desulfidation. This process can be considered a formal substitution of a sulfur atom with an alkyne. The structure of the thianickelacycle intermediate formed through oxidative addition of a C–S bond in the benzothiazole to nickel(0) was confirmed by X-ray single-crystal structure analysis and in situ X-ray absorption fine-structure spectroscopy.

Enantioselektive Gewinnung und Kristallstruktur des Ecstasy-Analogons N-Ethyl-3,4-methylendioxyamphetamin-HCl (MDE) und seiner beiden Hauptmetaboliten MDA und HME / Enantioselective Production and Crystal Structure of the Ecstasy Analogue N-Ethyl-3,4- methylenedioxyamphetamine-HCl (MDE) and its Major Metabolites MDA and HME

2000 ◽  
Vol 55 (12) ◽  
pp. 1124-1130 ◽  
Author(s):  
Jochen Büchler ◽  
Cacilia Maichle-Mössmer ◽  
Karl-Artur Kovar
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Crystal Lattice ◽  
Crystal And Molecular Structure ◽  
Synthetic Route ◽  
X Ray ◽  
X Ray Crystallography

A synthetic route to the production of the pure enantiomers of the ecstasy-analogue N-Ethyl- 3,4-methylenedioxyamphetamine (MDE) and its major metabolites MDA and HME is presented. The crystal and molecular structure of these compounds has been determined by X-ray crystallography. The hydrogen bonding in the crystal lattice is examined and significant differences were found by comparing (R)- and (S)-MDA-HCl.

Effect of Dielectric Properties and Elastic Strain Behavior on x/65/35 PLZT Ceramics in Lanthanum (x) Ions Contents

2014 ◽  
Vol 936 ◽  
pp. 115-118 ◽  
Author(s):  
Ladapak Chumprasert ◽  
Pranod Larwongsa ◽  
Apichart Limpichaipanit ◽  
Athipong Ngamjarurojana
Keyword(s):  
Crystal Structure ◽  
Dielectric Properties ◽  
Mixed Oxide ◽  
Elastic Strain ◽  
Synthetic Route ◽  
X Ray Diffraction ◽  
X Ray ◽  
Strain Behavior ◽  
Lanthanum Content ◽  
Milling Method

In this paper the effect of lanthanum addition on the phase formation, dielectric and ferroelectric characteristics of x/65/35 PLZT. This ceramics were prepared using mixed-oxide synthetic route via a rapid vibro-milling method. All samples were sintered at 1200°C for 12 h. X-ray diffraction was used to observe the crystal structure. It was found that when increasing lanthanum content, the structure remained rhombohedral. It can be seen that the change of behavior to ferroelectric relaxor with the increasing of lanthanum content resulted in the change of elastic strain

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