Transition Metal Fragment Substituted Silanols of Iron and Tungsten: Synthesis, Structure, and Condensation Reactions

ChemInform ◽  
2005 ◽  
Vol 36 (1) ◽  
Author(s):  
Wolfgang Malisch ◽  
Marco Hofmann ◽  
Matthias Voegler ◽  
Dirk Schumacher ◽  
Andreas Sohns ◽  
...  
Keyword(s):  
Transition Metal ◽  
Condensation Reactions ◽  
And Tungsten ◽  
Metal Fragment

Transition Metal Fragment Substituted Silanols of Iron and Tungsten– Synthesis, Structure and Condensation Reactions

2007 ◽  
pp. 348-359 ◽  
Author(s):  
Wolfgang Malisch ◽  
Marco Hofmann ◽  
Matthias Vgler ◽  
Dirk Schumacher ◽  
Andreas Sohns ◽  
...  
Keyword(s):  
Transition Metal ◽  
Condensation Reactions ◽  
And Tungsten ◽  
Metal Fragment

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.

Übergangsmetall-Carbin-Komplexe, LXXIY. Synthese thermisch stabiler neutraler Carbin-Carbonyl-Komplexe von Chrom, Molybdän und Wolfram mit den zweizähnigen Liganden 2.2′ -Bipyridyl und 1.10-Phenanthrolin/ Transition Metal Carbyne Complexes, LXXIV. Synthesis of Thermostable Neutral Carbyne Carbonyl Complexes of Chromium, Molybdenum, and Tungsten with the Bidentate Ligands 2,2′-Bipyridyl and 1,10-Phenanthroline

1983 ◽  
Vol 38 (5) ◽  
pp. 587-591 ◽  
Author(s):  
Alexander Filippou ◽  
Ernst Otto Fischer
Keyword(s):  
Transition Metal ◽  
General Formula ◽  
Carbonyl Groups ◽  
Carbonyl Complexes ◽  
Bidentate Ligands ◽  
Carbyne Complexes ◽  
And Tungsten

AbstractReaction of trans-bromotetracarbonyl(phenylcarbyne)-complexes of chromium, molybdenum and tungsten and trans-bromotetracarbonyl(methylcarbyne) complexes of chromium and tungsten with the bidentate ligands 2,2′-bipyridyl and 1,10-phenanthroline results in the replacement of two carbonyl groups leading to very thermostable carbyne complexes with the general formula Br(CO)2LMCR (L: 2,2′-bipy, ophen; M: Cr, Mo, W; R : CH3, C6H5).

scholarly journals Molybdenum and tungsten carbides can shine too

2020 ◽  
Vol 10 (18) ◽  
pp. 6089-6097
Author(s):  
M. Führer ◽  
T. van Haasterecht ◽  
J. H. Bitter
Keyword(s):  
Transition Metal ◽  
Metal Carbides ◽  
Tungsten Carbides ◽  
Transition Metal Carbides ◽  
And Tungsten

In this perspective, we argue that transition metal carbides such as molybdenum and tungsten hold great potential for the catalytic conversions of future feedstocks due to their ability to remain active in the presence of impurities in the feedstock.

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