Interaction of ?-acetylene and n-vinylidene complexes of manganese with carbonyl derivatives of group vi metals

1983 ◽  
Vol 32 (4) ◽  
pp. 866-866
Author(s):  
N. E. Kolobova ◽  
L. L. Ivanov ◽  
O. S. Zhvanko
Keyword(s):  
Group Vi ◽  
Vinylidene Complexes ◽  
Carbonyl Derivatives ◽  
Derivatives Of

ChemInform Abstract: NITROSYL CARBONYL DERIVATIVES OF GROUP VI METALS

1977 ◽  
Vol 8 (4) ◽  
pp. no-no
Author(s):  
S. C. TRIPATHI ◽  
S. C. SRIVASTAVA ◽  
A. K. SHRIMAL
Keyword(s):  
Group Vi ◽  
Carbonyl Derivatives ◽  
Derivatives Of

Substituted carbonyl derivatives of the Group VI transition metals. II. Complexes with tritolylphosphines

1971 ◽  
Vol 24 (12) ◽  
pp. 2471 ◽  
Author(s):  
JA Bowden ◽  
R Colton
Keyword(s):  
Steric Effects ◽  
Molar Ratio ◽  
Mass Spectral Data ◽  
Group Vi ◽  
Mass Spectral ◽  
Carbonyl Derivatives ◽  
Nuclear Magnetic Resonance Spectra ◽  
Metal Hexacarbonyls ◽  
Cis And Trans ◽  
Derivatives Of

The reactions of the three tritolylphosphines (ortho, meta, and para) with the metal hexacarbonyls, M(CO)6 (M = Cr, Mo, W), have been investigated under a variety of conditions of temperature, ultraviolet irradiation, and molar ratio. The products were of the general formulae M(CO)5L and cis and trans M(CO)4L2 [L = tri-tolylphosphine] although not all the tetracarbonyl complexes could be prepared. Infrared and nuclear magnetic resonance spectra of these compounds showed interesting trends as the ligand was varied. ��� In addition, a novel series of derivatives with tri(o- tolyl)phosphine (pot) has been isolated, which on the basis of infrared, N.M.R., and mass spectral data are formulated as π- (pot)M(CO)3. ��� The nature of the above reactions and the properties of the products are explained in terms of an argument based on steric effects.

Infrared Spectra and Structures of Metal Carbonyl Derivatives. III. Acetylene and Olefin Derivatives of Group VI Metal Carbonyls

1963 ◽  
Vol 2 (6) ◽  
pp. 1264-1267 ◽  
Author(s):  
Ingo W. Stolz ◽  
Gerard R. Dobson ◽  
Raymond K. Sheline
Keyword(s):  
Infrared Spectra ◽  
Metal Carbonyl ◽  
Metal Carbonyls ◽  
Group Vi ◽  
Carbonyl Derivatives ◽  
Derivatives Of

Group VI metal carbonyl derivatives of unsymmetrical bis tertiary phosphine ligands

1973 ◽  
Vol 9 (10) ◽  
pp. 1083-1088 ◽  
Author(s):  
Samuel O. Grim ◽  
John Del Gaudio ◽  
Chadwick A. Tolman ◽  
J.P. Jesson
Keyword(s):  
Metal Carbonyl ◽  
Phosphine Ligands ◽  
Tertiary Phosphine ◽  
Group Vi ◽  
Carbonyl Derivatives ◽  
Derivatives Of

Substituted carbonyl derivatives of the Group VI transition metals. I. Complexes with Bis(diphenylarsino)methane

1971 ◽  
Vol 24 (12) ◽  
pp. 2461 ◽  
Author(s):  
R Colton ◽  
CJ Rix
Keyword(s):  
Transition Metals ◽  
X Ray Diffraction ◽  
Monodentate Ligand ◽  
Group Vi ◽  
X Ray ◽  
Carbonyl Derivatives ◽  
Physical Measurements ◽  
Novel Structure ◽  
Derivatives Of ◽  
Mode Of Coordination

The reactions of the potentially bidentate ditertiary arsine ligand bis-(diphenylarsino)methane, dam, with the hexacarbonyls of the Group VI transition metals have been investigated. N.m.r, spectroscopy has been used to determine the mode of coordination of the ligand. In the compounds M(CO)5(dam), M(CO)4(dam)2, and M(CO)3(dam)3 [M = Cr, Mo, W], dam is acting as a monodentate ligand, but in M(CO)4(dam) it is acting as a normal chelate coordinating to the metal through both arsenic atoms. In the cases of molybdenum and chromium, only, a further type of complex M(CO)2(dam) has been isolated. The results of N.M.R., infrared, and mass spectrometry, together with other physical measurements, can only be explained on the assumption that the ligand was coordinated to the metal by an arene π-linkage and by one arsenic atom. This novel structure has been confirmed by a single crystal X-ray diffraction study on the chromium compound.

Substituted carbonyl derivatives of the Group VI transition metals. III. Complexes with π-bonded bridging triarylphosphines

1973 ◽  
Vol 26 (1) ◽  
pp. 43 ◽  
Author(s):  
JA Bowden ◽  
R Colton
Keyword(s):  
High Temperature ◽  
Pure State ◽  
The Other ◽  
Spectral Measurements ◽  
Group Vi ◽  
Mass Spectral ◽  
Chromium Hexacarbonyl ◽  
Carbonyl Derivatives ◽  
Molecular Arrangement ◽  
Derivatives Of

The reactions of chromium hexacarbonyl with triphenylphosphine, tri(m- tolyl)- phosphine (pmt), and tri(p-tolyl)phosphine (ppt) at high temperature yield two series of complexes Cr(CO)3L and [Cr(CO)2L]2, although only the latter could be isolated in a pure state. These dimeric derivatives were characterized by analysis, infrared, N.M.R., and mass spectral measurements. All the data are consistent with a molecular arrangement incorporating π-bonding between chromium and one of the arene rings of the ligand which is also σ-bonded through phosphorus to the other metal atom, thus forming a novel, highly unsymmetrical bridge system.

Relative labilities of different ligands L in Group VI metal carbonyl derivatives of the type M(CO)4L2

1967 ◽  
Vol 6 (8) ◽  
pp. 1582-1586 ◽  
Author(s):  
Mauro Graziani ◽  
Franco Zingales ◽  
Umberto Belluco
Keyword(s):  
Metal Carbonyl ◽  
Group Vi ◽  
Carbonyl Derivatives ◽  
Derivatives Of
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