Studies on metal carboxylates. Part X. The reactions of Group VI hexacarbonyls with pyridinecarboxylic acids. Complexes of chromium(III), molybdenum(III), and tungsten-(0), -(I), and -(IV)

1976 ◽  
pp. 347 ◽  
Author(s):  
Terry E. Dorsett ◽  
Richard A. Walton
Keyword(s):  
Group Vi ◽  
Metal Carboxylates ◽  
Pyridinecarboxylic Acids ◽  
And Tungsten

Carbonyl halides of the Group VI transition metals. XI. Dithiocyanatocarbonyl derivatives of molybdenum and tungsten(II)

1968 ◽  
Vol 21 (6) ◽  
pp. 1435 ◽  
Author(s):  
R Colton ◽  
GR Scollary
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Ammonium Chloride ◽  
Pure State ◽  
Ammonium Thiocyanate ◽  
Donor Ligands ◽  
Group Vi ◽  
Derivatives Of ◽  
And Tungsten

Reaction of ammonium thiocyanate with dihalocarbonyls of molybdenum and tungsten(11) leads to the elimination of ammonium chloride and the formation of a dithiocyanatocarbonyl complex of the transition metal. Although the thiocyanatocarbonyls themselves have not been isolated in a pure state, a number of substituted derivatives with phosphorus donor ligands have been prepared and characterized. In general these complexes are less stable than the corresponding carbonyl halide derivatives.

Carbonyl halides of the Group VI transition metals. XII. Isolation of halocarbonyls and halocarbonyl anions of molybdenum and tungsten

1968 ◽  
Vol 21 (11) ◽  
pp. 2657 ◽  
Author(s):  
JA Bowden ◽  
R Colton
Keyword(s):  
Transition Metals ◽  
Group Vi ◽  
Tetraethylammonium Salts ◽  
And Tungsten

Dibromotetracarbonylmolybdenum, Mo(CO)4Br2, and the dihalotetracarbonyltungsten compounds, W(CO)4X2 (where X = Cl, Br), have been isolated and characterized. These highly reactive compounds are all diamagnetic. The trihalotetracarbonyl anions [M(CO)4X3]- (M = Mo, W) have been isolated as their tetraethylammonium salts from the parent halocarbonyls. These yellow diamagnetic compounds are the first tetracarbonyl derivatives to be prepared from the parent halocarbonyls.

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