16800-45-6

Upstream product

• 14040-11-0 tungsten hexacarbonyl 
• 75-05-8 acetonitrile 

Downstream Products

• 73651-99-7 W(CO)4C₆H₅P(C₃N₂H(CH₃)2)2 
• 267664-16-4 W(CO)4(η2-Ph2P(o-C6H4)CH=N(CH2)2(o-C5H4N)) 
• 248600-20-6 Ta(CO)(P(C₆H₅)2W(CO)4)(C₅(CH₃)5)(C₅H₄P(C₆H₅)2) 
• 163807-49-6 CpW(CO)2(μ-PPh2)W(CO)5 
• 702645-51-0 ((4-trimethylsilyloxyphenyl)pyridine-2-ylmethyleneamine)Cr(CO)3((4-isocyanophenyl)pyridine-2-ylmethyleneamine)W(CO)4 
• 702645-53-2 ((4-trimethylsilyloxyphenyl)pyridine-2-ylmethyleneamine)W(CO)((4-isocyanophenyl)pyridine-2-ylmethyleneamine)W(CO)4 
• 702645-52-1 ((4-trimethylsilyloxyphenyl)pyridine-2-ylmethyleneamine)Mo(CO)3((4-isocyanophenyl)pyridine-2-ylmethyleneamine)W(CO)4 
• 842123-19-7 [((4-hydroxyphenyl)(pyridin-2-ylmethylene)amine)W(CO)3((4-isocyanophenyl)(pyridin-2-ylmethylene)amine)W(CO)4] 
• 842123-14-2 [((4-hydroxyphenyl)(pyridin-2-ylmethylene)amine)Cr(CO)3((4-isocyanophenyl)(pyridin-2-ylmethylene)amine)Mo(CO)4] 
• 16743-03-6 trans-triphenylphosphane tetracarbonyltungsten 
• 1363113-86-3 W(CO)4(η3-PPh2(o-C6H4)(CH2NMeCH)C60) 

Relevant academic research and scientific papers

Versatile Coordination Modes of Triphospha-1,4-pentadiene-2,4-diamine

1,3,5-Triphospha-1,4-pentadiene-2,4-diamine reacts with [M(CO)4L] (M = Mo, L = nbd (norbornadiene); M = W, L = 2 CH3CN) to give the chelate complexes [M(CO)4(PMes{C(NHCy)PMes}2-κP1,P3)]. In

Benzylic oligothioethers as ditopic ligands for Group 6 transition metal carbonyls

The co-ordination preferences of a family of novel thioethers based on (alkylsulfanylmethyl)benzene were examined. The alkyl chain length and the number and position of the thioether substituents were varied. The ligands were synthesized by coupling the alkanethiol to the appropriate benzyl bromide or via the reaction of benzyl mercaptans with bromoethane; Cs2CO3-DMF was employed as the base-solvent mixture. The molecular structure of hexakis(propylsulfanylmethyl)benzene (L3) and 1,2,4,5-tetrakis(propylsulfanylmethyl)benzene (L4) were obtained at room temperature. Both have a crystallographic centre of symmetry. In L3 the S-propyl substituents ("legs") alternate "a(bove)" and "b(elow)" the plane of the benzene ring, whereas in L4 the "legs" adopt an abba pattern. Several co-ordination modes of the ligands were observed. Bismetallated tetracarbonyl complexes where the ligand bridges two monometal Group 6 carbonyl fragments (M(CO)4) were generated on reaction of [W(CO)4(MeCN)2] or [Mo(CO)3(MeCN)3] with the ligands L1 and L2. The molecular structures of the resulting complexes [{Mo(CO)4}2L] (L = L1 or L2 which are the pentyl analogues of L3 and L4 respectively) show that the conformations of the ligands change radically to accommodate the octahedral geometry about the metal centres. In all cases the metal atoms are chelated by "legs" positioned ortho to each other. Changing the stoichiometry of the reactions does not significantly influence the products. & The Royal Society of Chemistry 2000.

Syntheses, characterization and structures of chromium group carbonyl complexes containing a multifunctional Ph2P(o-C6H4)CH=N(CH2) 2(o-C6H4N) ligand

Reactions of the phosphine-imine-pyridine-containing ligand Ph2P(o-C6H4)CH=N(CH2) 2(o-C6H4N) (PNN) with M(CO)3(NCMe)3 (M=Cr, Mo, W) produce the tridentate complexes fac-M(CO)3(η3-PNN). On the other hand, treating W(CO)4(NCMe)2 with PNN results in the bidentate complex W(CO)4(η2-PNN), which converts to fac-W(CO)3(η3-PNN) upon heating, but no facial→meridional isomerism is evidenced. The new compounds have been characterized by elemental analysis and mass, IR, and NMR spectroscopy. The molecular structures of W(CO)4(η2-PNN), fac-W(CO)3(η3-PNN) and fac-Mo(CO)3(η3-PNN) are determined by an X-ray diffraction study.

1,3,5-Trimethyl-1,3,5-triazacyclohexane tricarbonyl complexes of Mo and W as sources of the fac-M(CO)3 fragment. Mild syntheses of fac-[M(CO)3(CH3CN)3] (M=Mo, W), [W(CO)3(PR3)3], [W(CO)(alkyne)3] and [W(CO)3(π-arene)] complexes

The 1,3,5-trimethyl-1,3,5-triazacyclohexane (Me3tach) group in [M(CO)3(Me3tach)] complexes (M=Mo, W) is easily displaced by a variety of ligands under mild conditions. The lability of the Me3tach ligand allows the [M(CO)3(Me3tach)] complexes to be used as synthetic intermediates in convenient syntheses of products such as fac-[M(CO)3(CH3CN)3] (M=Mo, W), [W(CO)(alkyne)3], [W(CO)3(PR3)3] and [W(CO)3(η6-arene)] complexes. An improved synthesis of [W(CO)3(Me3tach)] from [W(CO)6] and Me3tach is described.

Photochemical synthesis of the tungsten(II) complex

The photochemical oxidation of W(CO)6 to 2 with CCl4 has been used to give .The same methodology was applied in the synthesis W(II) complexes having the nitrogen ligands acetonitrile, N,N,N',N'-tetramethylethylenediamine, pyrid

KINETISCHE UND MECHANISTISCHE UNTERSUCHUNGEN VON UEBERGANGSMETALL-KOMPLEX-REAKTIONEN XXII. KONKURRENZ ZWISCHEN DISSOZIATIVEM UND ASSOZIATIVEM MECHANISMUS BEI DER REAKTION VON PENTACARBONYL(DIPHENYLCARBEN)WOLFRAM MIT NITRILEN

The reaction of pentacarbonyl(diphenylcarbene)tungsten, (CO)5W=CPh2 (I), with organyl nitriles, (II) (R = C6H4NMe2-p (a), C6H4OMe-p (b), Ph (c), Me (d), But (e)), yields the insertion product (CO)5W (III), the nitrile complexes (IV) and (V) and diphenyl ketene, Ph2C=C=O.The product distribution depends on the type and the concentration of the organyl nitrile II.At constant temperature, the yield of III increases and that of IV as well as that of diphenyl ketene decreases with increasing concentration of II and in the order IId, IIc, IIb, IIa.When I reacts with IIb in the presence of 13CO, 13CO is incorporated almost exclusively into IVb.At 50.6 deg C in 1,1,2-trichloroethane, the reaction of I with IIa-d follows an additive rate law: -d/dt = k1 + k2.The rate constant k1 is independent of the type of II and agrees well with the rate constant for the dissociative thermolysis of I in 1,1,2-trichloroethane, however, k2 clearly increases in the series IId-a.A reaction scheme is proposed consisting of an associative pathway (giving III) and a dissociative pathway leading to the compounds IV, V and diphenyl ketene.