Tungsten carbonyl σ-complexes with C-thioethers based on 9-Me3N-7,8-C2B9H11

Abstract Reactions of five sym-diarylthioureas (L), viz,, sym-diphenylthiourea (dptu), sym-di-o-tolylthiourea (dottu), sym-di-p-tolylthiourea (dpttu), sym-di-o-anisylthiourea (doatu) and sym-di-α- naphthylthiourea (dαntu) with W(CO)6 have been performed both by reflux and ultra-violet irradiation methods in which only monosubstituted products [(L)W(CO)5] are obtained. Several mixed ligand tungsten carbonyl derivatives, viz., [(o-phen or 2,2’-bipy)(L)W(CO)3] and [(Ph3P or Ph3As)(L)W(CO)4] have also been synthesized. Halogenation of [(L)W(CO)5] yielded heptacoordinated [(L)W(CO)4X2] (X = Br or I). The complexes have been characterized by microanalytical data, conductivity and IR measurements. The C-O stretching force constants and CO-CO stretch-stretch interaction constants of [(L)W(CO)5] derivatives have also been evaluated from the IR spectra.

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Metal complexes of fluorophosphines. 10. Mononuclear and binuclear chromium, molybdenum, and tungsten carbonyl derivatives of (alkylamino)bis(difluorophosphines)

Inorganic Chemistry ◽

10.1021/ic00131a059 ◽

1982 ◽

Vol 21 (1) ◽

pp. 319-329 ◽

Cited By ~ 24

Author(s):

R. B. King ◽

T. W. Lee

Keyword(s):

Metal Complexes ◽

Carbonyl Derivatives ◽

Tungsten Carbonyl ◽

Derivatives Of ◽

And Tungsten

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Mass Spectra of Organo-Metallic Compounds: X. Some Mononuclear Olefinic Derivatives of Metal Carbonyls

Applied Spectroscopy ◽

10.1366/000370269774380545 ◽

1969 ◽

Vol 23 (5) ◽

pp. 536-546 ◽

Cited By ~ 17

Author(s):

R. B. King

Keyword(s):

Mass Spectra ◽

Iron Carbonyl ◽

Vinyl Ketone ◽

Methyl Vinyl Ketone ◽

Metal Carbonyls ◽

Methyl Vinyl ◽

Tungsten Carbonyl ◽

Metallic Compounds ◽

Derivatives Of ◽

Fragmentation Processes

The mass spectra of the following olefin derivatives of metal carbonyls have been investigated: (a) Arene—tungsten tricarbonyl complexes of toluene, p-xylene, and mesitylene; (b) The cycloheptatriene—metal tricarbonyl complexes C7H8M(CO)3 (M = Cr and W); (c) The 1,3,5-cyclooctatriene complex C8H10W(CO)3; (d) The cyclooctatetraene—metal tricarbonyl complexes C8H8M (CO)3 (M = Cr or Fe); (e) The 1,5-cyclooctadiene—metal tetracarbonyl complexes C8H12M(CO)4 (M = Mo or W); (f) The tungsten tetracarbonyl complexes of bicyclo[2,2,1] heptadiene and dicyclopentadiene; (g) The 1,3-cyclohexadiene complexes (C6H8)2M(CO)2 (M = Mo or W); (h) The cycloheptadienol complex (C7H9OH)Fe(CO)3; (i) The methyl vinyl ketone complexes (CH3COCH = CH2)3M (M = Mo or W); (j) A product of composition C12H16Fe(CO)2 obtained from allene dimer and Fe3(CO)12. The following fragmentation processes of particular interest were observed: (a) The facile dehydrogenation of ions containing the π-bonded 1,3,5-cyclooctatriene, 1,5-cyclooctadiene, and 1,3-cyclohexadiene ligands with two adjacent CH2 groups; (b) Elimination of neutral C5H6 fragments from tungsten carbonyl ions containing π-bonded bicyclo[2,2,1] heptadiene or dicyclopentadiene ligands; (c) Facile dehydration of iron carbonyl ions with π-bonded cycloheptadienol.

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