Heterodimetallic Chalcogen-Bridged Cubane-Type Clusters of Molybdenum and Tungsten Containing First-Row Transition Metals

2003 ◽  
Vol 2003 (7) ◽  
pp. 1271-1290 ◽  
Author(s):  
Rosa Llusar ◽  
Santiago Uriel
Keyword(s):  
Transition Metals ◽  
And Tungsten

An investigation on the adhesive behaviour between transition metals titanium, niobium, tantalum, and tungsten

1991 ◽  
Vol 164 (2) ◽  
pp. 387-394 ◽  
Author(s):  
Kebin Li ◽  
Jiansan Sun ◽  
Ling Liu ◽  
Zhenzhong Qi
Keyword(s):  
Transition Metals ◽  
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.

scholarly journals Transition Metals in Catalysis: The Functional Relationship of Fe–S Clusters and Molybdenum or Tungsten Cofactor-Containing Enzyme Systems

Inorganics ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 6
Author(s):  
Silke Leimkühler
Keyword(s):  
Transition Metals ◽  
Functional Relationship ◽  
Special Issue ◽  
Iron Sulfur Clusters ◽  
Iron Sulfur ◽  
Enzyme Systems ◽  
Relationship Of ◽  
And Tungsten

Following the “Molybdenum and Tungsten Enzyme conference—MoTEC2019” and the satellite meeting on “Iron–Sulfur for Life”, we wanted to emphasize the link between iron–sulfur clusters and their importance for the biosynthesis, assembly, and activity of complex metalloenzymes in this Special Issue of Inorganics, entitled “Transition Metals in Catalysis: The Functional Relationship of Fe–S Clusters and Molybdenum or Tungsten Cofactor-Containing Enzyme Systems” [...]

Carbonyl halides of the Group VI transition metals. VII. Nitrosyl halide derivatives of molybdenum and tungsten(II)

1968 ◽  
Vol 21 (5) ◽  
pp. 1149 ◽  
Author(s):  
MW Anker ◽  
R Colton ◽  
IB Tomkins
Keyword(s):  
Nitric Oxide ◽  
Transition Metals ◽  
New Method ◽  
Natural Explanation ◽  
Group Vi ◽  
New Feature ◽  
Derivatives Of ◽  
And Tungsten

The previously reported dihalodinitrosylbis(triphenylphosphine)molybdenum and tungsten(11) type complexes, M(NO)2L2X2 (M = Mo, W; L = PPh3, AsPh3, SbPh3; X = Cl, Br), have been prepared by a new method involving the action of nitric oxide on the corresponding tricarbonyl derivatives. The new feature of this method is that, unlike the previous methods, it is not stereospecific, and in some cases all three possible cis isomers are formed. The identification of the various isomers has given a natural explanation of the apparently anomalous order of π-bonding effects in these complexes previously reported by Cotton and Johnson.

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