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

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.

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Reaction of η4-vinylketen iron complexes with carbon monoxide or tertiary phosphines. Intramolecular carbonylation–decarbonylation rearrangement of the vinylketen skeleton induced by co-ordination of a ligand: X-ray crystal structure of FeCOCH2C(CO2Me)C(OMe)(CO)3(PPhMe2)

Journal of the Chemical Society Chemical Communications ◽

10.1039/c39790000579 ◽

1979 ◽

pp. 579-580 ◽

Cited By ~ 3

Author(s):

Take-Aki Mitsudo ◽

Teruhiko Sasaki ◽

Yoshihisa Watanabe ◽

Yoshinobu Takegami ◽

Kazumi Nakatsu ◽

...

Keyword(s):

Crystal Structure ◽

Carbon Monoxide ◽

Iron Complexes ◽

X Ray ◽

Tertiary Phosphines

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

Zeitschrift für Naturforschung B ◽

10.1515/znb-2000-1117 ◽

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.

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

Australian Journal of Chemistry ◽

10.1071/ch9941043 ◽

1994 ◽

Vol 47 (6) ◽

pp. 1043 ◽

Cited By ~ 9

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.

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

Zeitschrift für Naturforschung B ◽

10.1515/znb-1993-0613 ◽

1993 ◽

Vol 48 (6) ◽

pp. 785-793 ◽

Cited By ~ 6

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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