Molybdenum and Tungsten Complexes in Processes of N2 Reduction in γ-Radiation Field as Model of Nitrogenasis

An efficient synthesis of diarylallenylidene pentacarbonyl chromium and tungsten complexes is presented. Irradiation of M(CO)6 in THF affords (CO)sM[THF], Substitution of the THF ligand by diarylpropargylalcoholate and subsequent desoxygenation with COCF gives the title compounds in good yield. (The structure of diphenylallenylidene pentacarbonyl chromium has been determined by X-ray structure analysis

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ChemInform Abstract: Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 92. Synthesis of Alkynylmethylidyne-Molybdenum and -Tungsten Complexes and Their Reactions with (Co2(CO)8) and (Mo2(CO)6(η-C5H5)2).

ChemInform ◽

10.1002/chin.199009283 ◽

1990 ◽

Vol 21 (9) ◽

Author(s):

I. J. HART ◽

A. F. HILL ◽

F. G. A. STONE

Keyword(s):

Metal Complexes ◽

Tungsten Complexes ◽

Polynuclear Metal Complexes ◽

And Tungsten

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GAMMA-RADIATION SPECTRA OF 1200 MeV ELECTRONS IN THICK BERYLLIUM, SILICON AND TUNGSTEN SINGLE CRYSTALS

10.46813/2019-121-086 ◽

2019 ◽

pp. 86-93

Author(s):

G. L. Bochek ◽

O. S. Deiev ◽

V. I. Kulibaba ◽

N. I. Maslov ◽

V. D. Ovchinnik ◽

...

Keyword(s):

Gamma Radiation ◽

Single Crystals ◽

Angular Distributions ◽

Γ Radiation ◽

Radiation Spectra ◽

Solid Angles ◽

Crystallographic Axes ◽

And Tungsten

Gamma radiation spectra of 1200 MeV electrons from the single crystals of the beryllium 1.2 mm thick, silicon 1.5 mm and 15 mm thick and tungsten 1.18 mm thick along of the crystallographic axes were measured. Also spectral-angular distributions of gamma radiation from the silicon single crystals 1.5 mm thick along of the crystallographic axes < 100 >, < 110 > and < 111 > were measured. On the basis of these measurements the γ-radiation spectra for the different solid angles up to 6.97 × 10−6 sr were obtained.

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Nature of M-(η2-H-SiR2) bonds in chromium, molybdenum and tungsten complexes [(η5-C5H5)(dmpe)M(η2-H-SiR2)] and [(η5-C5H5)(CO)2M(η2-H-SiMe2)]: A theoretical study

Polyhedron ◽

10.1016/j.poly.2013.03.034 ◽

2013 ◽

Vol 55 ◽

pp. 241-248 ◽

Cited By ~ 2

Author(s):

Krishna K. Pandey

Keyword(s):

Theoretical Study ◽

Tungsten Complexes ◽

And Tungsten

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Molybdenum and Tungsten Nitrosyl Complexes with Dithiocarbamate Ligands

Australian Journal of Chemistry ◽

10.1071/ch9791187 ◽

1979 ◽

Vol 32 (6) ◽

pp. 1187 ◽

Cited By ~ 7

Author(s):

JA Broomhead ◽

JR Budge

Keyword(s):

Photochemical Reactions ◽

Molybdenum Complexes ◽

Tungsten Complexes ◽

Nitrosyl Complexes ◽

Infrared Studies ◽

In Cis ◽

And Tungsten

Molybdenum and tungsten nitrosyl complexes with dithiocarbamato ligands have been prepared and characterized by analysis, and 1H n.m.r, and infrared studies. The molybdenum complexes are formulated as seven-coordinate species [Mo(NCO)L(S2CNEt2)2NO]- (L = Cl-, N3-, NCS-),{Mo(NCO)(S2CNEt2)2NO}2N2H4 and [Mo(NCO)B(S2CNEt2)2NO](B = NH3, pyridine). Likely stereochemistries are discussed. New tungsten complexes have been prepared by photochemical reactions of cis-[W(S2CNEt2)2(NO)2] to give [WL2(S2CNEt2)2NO]-, [WL(S2CNEt2)2(Me2SO)NO](L = NCO-, N3-, NCS-) and [W(NCO)(S2CNEt2)2(MeCONMe2)NO]. Assignments for the nitrosyl infrared bands in cis-[MO(S2CNEt2)2(NO)2] and [Mo(NCO)(S,CNEt2)2(Me2SO)NO] havebeen made by using 15NO labelled ligands.

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