A study of PtX2(PR3)2 in the presence of PR3 in dichloromethane solution and the Cis-Trans isomerization reaction as studied by phosphorus-31 NMR. Crystal structure of [PtCl(PMe3)3]Cl

1980 ◽  
Vol 19 (5) ◽  
pp. 1356-1365 ◽  
Author(s):  
Roland Favez ◽  
Raymond Roulet ◽  
Alan A. Pinkerton ◽  
Dieter Schwarzenbach
Keyword(s):  
Crystal Structure ◽  
Isomerization Reaction ◽  
Dichloromethane Solution ◽  
Trans Isomerization

Darstellung von Mononitropentahydrohexaborat(2-) und Kristallstruktur von M2[B6H5(NO2)], M = K, Cs / Preparation of Mononitropentahydrohexaborate(2—) and Crystal Structure of M2[B6H5(NO2)], M = K, Cs

1993 ◽  
Vol 48 (12) ◽  
pp. 1727-1731 ◽  
Author(s):  
A. Franken ◽  
W. Preetz ◽  
M. Rath ◽  
K.-F. Hesse
Keyword(s):  
Crystal Structure ◽  
Ion Exchange ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Dichloromethane Solution ◽  
Space Group ◽  
X Ray ◽  
Diethylaminoethyl Cellulose

By electrochemical oxidation of [B6H6]2- in the presence of nitrite ions and the base DBU in dichloromethane solution mononitropentahydrohexaborate [B6H5(NO2)]2- ions are formed and can be isolated by ion exchange chromatography on diethylaminoethyl cellulose. The crystal structures of the K and Cs salt were determined from single crystal X-ray diffraction analyses. K2[B6H5(NO2)] is monoclinic, space group P21/m with a = 5.953(1), b = 8.059(4), c = 8.906(1) Å, β = 109.553(9)°; Cs2[B6H5(NO2)] is monoclinic, space group P21/a with a = 9.438(6), b = 9.644(7), c = 11.138(9) Å, β = 101.44(9)°. The B6 octahedron is compressed in the direction of the B—NO2 bond by about 5%, with bond lengths between 1.67 and 1.77 A.

[1.1](3,3‘)-Azobenzenophane:  Novel Crystal Structure and Cis−Trans Isomerization of Distorted Azobenzene

2002 ◽  
Vol 4 (22) ◽  
pp. 3907-3910 ◽  
Author(s):  
Yasuo Norikane ◽  
Kogorou Kitamoto ◽  
Nobuyuki Tamaoki
Keyword(s):  
Crystal Structure ◽  
Trans Isomerization

Darstellung, 11B-NMR- und Schwingungsspektren von c/s-Monoethylmononitrotetrahydro- c/050-hexaborat(2-) sowie Kristallstruktur von cis (Ph4As)2[B6H4(C2H5)(NO2)] / Synthesis, 11B NMR and Vibrational Spectra of cis-Monoethylmononitrotetrahydroc-closo-hexaborate(2-) and Crystal Structure of cis-(Ph4As)2[B6 H4 (C2H5 )(NO2)]

1999 ◽  
Vol 54 (6) ◽  
pp. 772-776 ◽  
Author(s):  
C. Drewes ◽  
W. Preetz
Keyword(s):  
Crystal Structure ◽  
Diffraction Analysis ◽  
Vibrational Spectra ◽  
X Ray Diffraction ◽  
Nmr Spectrum ◽  
Dichloromethane Solution ◽  
Triclinic Space Group ◽  
X Ray ◽  
11B Nmr ◽  
Ir And Raman

By electrochemical oxidation of (n-Bu4N)[B6H5Hfac(C2H5)] in the presence of nitrite ions and of the base DBU in dichloromethane solution cis-[B6H4(C2H5)(NO2)]2- is formed. X-ray diffraction analysis has been performed on a single crystal of cis-(Ph4 As)2[B6H4(C2H5)(NO2)] (triclinic, space group P1; a = 10.673(4). b = 10.907(4), c = 21.237(4) A, α = 80.789(4), β = 83.117(4), γ = 66.548(2)°, Z = 2). The 11B NMR spectrum is consistent with a disubstituted octahedral B6 cage with local Cs symmetry. The IR and Raman spectra exhibit characteristic CH3, CH2, NO2, BN, BH and B6 vibrations

Crystal structure and dynamic behavior of [Ni{PhNHC(S)NP(S)(OPri)2-S,S}2] complex in dichloromethane solution

Polyhedron ◽  
2006 ◽  
Vol 25 (6) ◽  
pp. 1433-1440 ◽  
Author(s):  
Vasiliy V. Brusko ◽  
Aydar I. Rakhmatullin ◽  
Valery G. Shtyrlin ◽  
Dmitry B. Krivolapov ◽  
Igor A. Litvinov ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Dynamic Behavior ◽  
Dichloromethane Solution

ChemInform Abstract: Gas Phase Thermal Cis-Trans Isomerization Reaction of 1-Bromopropene.

ChemInform ◽  
2010 ◽  
Vol 22 (15) ◽  
pp. no-no
Author(s):  
D. S. HUH ◽  
J. Y. UM ◽  
S. J. YUN ◽  
K. Y. CHOO ◽  
K.-H. JUNG
Keyword(s):  
Gas Phase ◽  
Isomerization Reaction ◽  
Trans Isomerization

Über die Reaktion von Bis(t-butylamino)dimethylsilan mit Titantetrachlorid. Kristallstrukturen des Imido-Komplexes [TiCl2(N-CMe3)(H2 N-CMe3)(CH3CN)]2 und des Ketimido-Komplexes [TiCl3 {NC(Me)N(H)CMe3}(CH3CN)2]/ On the Reaction of Bis(t-butylamino)dimethylsilane with Titanium Tetrachloride. Crystal Structures of the Imido Complex [TiCl2(N-CMe3)(H2N-CMe3)(CH3CN)]2 and of the Ketimido Complex [TiCl3{NC(Me)N(H)CMe3}(CH3CN)2]

1998 ◽  
Vol 53 (8) ◽  
pp. 887-892 ◽  
Author(s):  
Andreas Mommertz ◽  
Roland Leo ◽  
Werner Massa ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Crystal Structures ◽  
Titanium Tetrachloride ◽  
Titanium Atom ◽  
Double Bonds ◽  
Dichloromethane Solution ◽  
Bond Lengths ◽  
Monomeric Complex ◽  
Structure Determinations

Abstract The reaction of bis(t-butylamino)dimethylsilane with titanium tetrachloride in dichloromethane solution leads to a mixture of compounds from which the imido complex (H3NCMe3)2[TiCl3(N-CMe3)]2 (1) and by extraction of the residue with acetonitrile the imido complex [TiCl2(N-CMe3)(H2N-CMe3)(CH3CN)]2 (2) can be isolated. 1 reacts with acetonitrile to give the ketimido complex [TiCl3{NC(Me)N(H)CMe3}(CH3CN)2] (3). According to crystal structure determinations 2 consists of centrosymmetric dimeric molecules containing TiCl2Ti bridges, the N-CMe32- ligands being in equatorial positions with TiN bond lengths of 168.8(4) pm which corresponds to double bonds. In the monomeric complex 3 the chloro ligands are in meridional positions of the distorted octahedrally coordinated titanium atom with a TiN bond length of 175.7(2) pm of the ketimido ligand.

Sign in / Sign up

Export Citation Format

Share Document