Metal-promoted transformation of carbon dioxide into carbon monoxide. X-ray crystal structure of the nickel-carbonate complex [O:PPh2CH2C(CH3)(CH2PPh2)2]Ni(O2CO).0.5H2O.C6H6

1984 ◽  
Vol 23 (18) ◽  
pp. 2731-2732 ◽  
Author(s):  
Claudio Bianchini ◽  
Carlo Mealli ◽  
Andrea Meli ◽  
Michal Sabat
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Carbonate Complex ◽  
X Ray ◽  
Nickel Carbonate

Synthese und Struktur des Ammoniumsesquicarbonat Monohydrates (NH4)4[H2(CO3)3] ·H2O

2003 ◽  
Vol 58 (6) ◽  
pp. 511-513 ◽  
Author(s):  
Günter Margrafa ◽  
Hans-Wolfram Lernera ◽  
Michael Bolteb ◽  
Matthias Wagnera
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
X Ray

The ammonium sesquicarbonate monohydrate (NH4)4[H2(CO3)3] · H2O is obtained from the reaction of hexamethyldisilazane with carbon dioxide in tetrahydrofuran in the presence of water. The structure of (NH4)4[H2(CO3)3] · H2O has been determined by X-ray crystal structure analysis.

Monoolefincobalt(0)-Komplexe / Monoolefincobalt(0) Complexes

1988 ◽  
Vol 43 (10) ◽  
pp. 1256-1262 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Goetz Lull ◽  
Birgit Rodenhäuser ◽  
Gerhard Cordier ◽  
Helmut Paulus
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
Valence State ◽  
Cobalt Atom ◽  
Spectroscopic Properties ◽  
X Ray ◽  
Mononuclear Cobalt ◽  
Structure Determinations

Mononuclear cobalt(o) complexes containing olefin and trimethylphosphane ligands Co(olefin)(PMe3)3 (olefin = C2H4 (1), C3H6 (2), cyclopentene (3), trans-1,2-diphenylethene (4), tetrafluorobenzo-bicyclo-(2.2.2)-octadiene (5)), are obtained from CoCl2 by reaction with magnesium in the presence of the ligands or by substitution of 3 with olefin. X-ray crystal structure determinations of 4 and 5 show a distorted tetrahedral arrangement of ligands around the cobalt atom. Chemical and spectroscopic properties are consistent with a paramagnetic valence state of the compounds in solution. By reaction with carbon monoxide a dicobalt complex is formed, while azobenzene gives paramagnetic Co(N2Ph2)(PMe3)2.

3-Hexyne Complexes of M olybdenum(II) and Tungsten(II) Containing 2, 2 '-Bipyridine. X-Ray Crystal Structure of [MoI2(CO)(bipy)(η2-EtC2Et)]

2000 ◽  
Vol 55 (11) ◽  
pp. 1095-1098
Author(s):  
Mutlaq Al-Jahdali ◽  
Paul K. Baker ◽  
Michael B. Hursthouse ◽  
Simon J. Coles
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
Room Temperature ◽  
Octahedral Geometry ◽  
Cationic Complex ◽  
Molybdenum Complex ◽  
Neutral Complex ◽  
Nmr Studies ◽  
X Ray ◽  
C Nmr

Reaction of [MI2(CO)(NCMe)(η2-EtC2Et)2] (M = Mo,W) with one equivalent of 2,2' -bipyridine (bipy) in CH2C12 at room temperature gives either the neutral complex, [MoI2(CO)(bipy)- (η2-EtC2Et)] (1) or the cationic complex, [WI(CO)(bipy)(η2-EtC2Et)2]I (2). The neutral molybdenum complex 1, has been crystallographically characterised, and has a pseudo-octahedral geometry with the iodo-ligand trans to the 3-hexyne, and with the bipy, carbon monoxide and other iodo-ligand occupying the equatorial face. 13C NMR studies show the 3-hexyne is donating four electrons to the molybdenum in 1.

The Stereochemistry of Organometallic Compounds. LX. Rhodium-Catalyzed Reactions of Hydrogen and Carbon Monoxide With Alkenylanilines

1994 ◽  
Vol 47 (6) ◽  
pp. 1043 ◽  
Author(s):  
D Anastasiou ◽  
EM Campi ◽  
H Chaouk ◽  
GD Fallon ◽  
WR Jackson ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
Single Crystal ◽  
Structure Determination ◽  
Cross Coupling ◽  
Organometallic Compounds ◽  
Single Crystal Structure ◽  
Crystal Structure Determination ◽  
X Ray ◽  
Catalyzed Reactions

Rhodium- catalysed reactions of o- or p- cyano-N-allylanilines with H2/CO give N- arylpyrrolidine aldehydes resulting from a double hydroformylation sequence. In contrast reactions of o- or p-methyl-N-allylanilines or N- allylaniline itself with H2/CO give ' dimeric ' compounds resulting from self-condensation reactions of an initially formed hydroformylation product together with varying amounts of the double hydroformylation product. Similar reactions of o-cyano-N-but-3-enylanilines give low yields of double hydroformylation products and major products arising from hydrogenation or cross coupling of intermediate enamines. The structure of one of these products, N-2-cyanophenyl-5-(N′-2-cyanophenyl-3-methyl-pyrrolidin-2-yl)-1,2,3,4-tetrahydropyridine (17) (IUPAC name: 2-[5-{1-(2-cyanophenyl)-3-methylpyrrolidin-2-yl}-1,2,3,4-tetrahydropyridin-1-yl] benzonitrile ) was confirmed by an X-ray single-crystal structure determination.

Products of the reaction of carbon monoxide with [Os6(CO)18]; X-ray crystal structure of [Os5(CO)19]

1981 ◽  
pp. 273 ◽  
Author(s):  
David H. Farrar ◽  
Brian F.G. Johnson ◽  
Jack Lewis ◽  
J. Nicola Nicholls ◽  
Paul R. Raithby ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
X Ray

Tris(trimethylphosphine)cobalt(0) Compounds Containing Azaolefinic Ligands — Syntheses and Structures of Benzo[c]cinnoline and Phenylisocyanate Complexes

1993 ◽  
Vol 48 (6) ◽  
pp. 785-793 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Michael Helwig ◽  
Michael Karnop ◽  
Herbert König ◽  
Birgit Hammerschmitt ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
Cobalt Atom ◽  
Cyclic Dimer ◽  
X Ray ◽  
Convenient Synthesis ◽  
Mononuclear Cobalt ◽  
Structure Determinations

Mononuclear cobalt(0) complexes Co(η2-azaolefin)(PMe3)3 (azaolefin = benzo[c]cinnoline (1), p-dimethylamino-phenyl(phenyl)diazene (2), 1/2 diazobenzene (3), bis(p-tolyl)diazene (4), bis(p-fluorphenyl)diazene (5), bis(p-trifluoromethyl-phenyl)diazene (6), phenylisocyanate (7)) are obtained from Co(cyclo-C5H8)(PMe3)3 by substitution of the olefin. X-ray crystal structure determinations of 1 and 7 show tetrahedral arrangements of ligands around the cobalt atom. By reaction with carbon monoxide carbonyl(phosphine)cobalt(0) complexes are formed. 7 catalyses the cyclotrimerization of phenylisocyanate, while with CoCl(PMe3)3 as a catalyst the cyclic dimer of phenylisocyanate is selectively formed. A convenient synthesis for CoCl(PMe3)3 is described.

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