Transition-metal-substituted diphosphenes. 12. Transition-metal sulfur ylide complexes. 25. Alkylidene transfer to the P:P double bond of diphosphenyl complexes by means of the sulfur ylides (CH3)2S(O):CH2 and (c-C3H4)SPh2. X-ray structure analysis of [cyclic] (.eta.5-C5Me5)(CO)2FePC(CH2CH2)PAr (Ar = 2,4,6-tert-Bu3C6H2)

1988 ◽  
Vol 7 (4) ◽  
pp. 978-983 ◽  
Author(s):  
Lothar. Weber ◽  
Ewald. Luecke ◽  
Roland. Boese
Keyword(s):  
Double Bond ◽  
Transition Metal ◽  
Structure Analysis ◽  
Sulfur Ylides ◽  
X Ray ◽  
Sulfur Ylide ◽  
Ylide Complexes

ÜbergangsmetaU-Schwefelylid-Komplexe, XI [1] Struktur und Reaktivität von n5 -Thiacyclohexadienyl-1-oxid-chrom-KompIexeii / Transition Metal Sulfur Ylide Complexes, XI [1] Structure and Reactivity of n5-Thiacyclohexadienyl-1-oxide Complexes of Chromium

1981 ◽  
Vol 36 (2) ◽  
pp. 198-204 ◽  
Author(s):  
Lothar Weber ◽  
Dorothee Vehreschild-Yzermann ◽  
Carl Krüger ◽  
Gotthelf Wolmershäuser
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
Sulfur Ylide ◽  
Ylide Complexes

Abstract The X-ray crystal and molecular structure of tetraethylammonium-tricarbonyl-(3,5-diphenylthiacyclohexadienyl-1-oxide)chromate has been determined. This organo-metallic anion can be nitrosylated to yield neutral [n5-C5H3(C6H5)2SO](CO)2(NO)Cr. Further carbonyl displacement in this compound is achieved by treatment with pyridin or phosphanes in the presence of triethylamineoxide.

Übergangsmetall-Schwefelylid-Komplexe, XXII [1] Zur Reaktivität von DicarbonylnitrosyI-η5-thiacyclohexadienyl-1-oxid- Chromkomplexen gegenüber Phosphor- und Schwefelyliden / Transition Metal Sulfur Ylide Complexes, XXII [1] Reactivity Studies of Dicarbonylnitrosyl-η5-thiacyclohexadienyl-1-oxide Chromium Complexes with Phosphorus and Sulfur Ylides

1985 ◽  
Vol 40 (3) ◽  
pp. 373-379 ◽  
Author(s):  
Lothar Weber
Keyword(s):  
Transition Metal ◽  
Chromium Complexes ◽  
Carbonyl Ligand ◽  
Sulfur Ylides ◽  
Sulfur Ylide ◽  
Ylide Complexes

3a-dη5-Thiacyclohexadienyl-1-oxide chromium complexes are generated by treatment of the 1-methyl-thiabenzene-1-oxide complexes 1a-d with Li[BHEt3] and successive nitrosylation of the intermediates 2a-d. 3a-d react with Me2S(O) = CH2 or Ph3P=CH2 at a carbonyl ligand in an additon/transylidation process to yield the very sensitive products 5, 6a-d.

Regiospezifische Insertion von [SCN]- und [SeCN]- in die S – C- bzw. Se– C-Bindung Übergangsmetall-koordinierter Thietane und SelenetaneRegiospecific Insertion of [SCN]- and [SeCN]- in the S–C- and Se–C-Bond of Transition-Metal-Coordinated Thietanes and Selenetanes

1993 ◽  
Vol 48 (11) ◽  
pp. 1613-1620 ◽  
Author(s):  
Helmut Fischer ◽  
Claudia Kalbas ◽  
Carsten Troll ◽  
Klaus H. Fluck
Keyword(s):  
Nitrogen Atom ◽  
Transition Metal ◽  
Structure Analysis ◽  
Trans Isomer ◽  
X Ray ◽  
Tungsten Complexes ◽  
Membered Heterocycle

Pentacarbonyl(thietane)tungsten complexes react with thiocyanate, [SCN]-, and SiO2/H2O by insertion of the CN group into a S—C bond of the four-membered heterocycle, 1,3-migration of the pentacarbonyltungsten fragment and protonation of the nitrogen atom to give tungsten-coordinated thiazinthione complexes. Analogously, the reactions of a thietane tungsten complex with [SeCN]- and SiO2/H2O affords a thiazinselone complex. A selenazinthione complex is obtained from a selenetane complex and [SCN]- (+ SiO2/H2O). The insertions are regiospecific and stereoselective. The structure of the trans-isomer of a pentacarbonyl-(thiazinthione) complex has been established by X-ray structure analysis.

Übergangsmetallkomplexe mit Schwefelliganden, LXXVI Redox- und Additionsreaktionen von Nickelkomplexen mehrzähniger Thioether-Thiolat-Liganden. Röntgenstrukturanalysen von (NMe4)2[Ni(′S2′)2] und [Ni(′S4 – C3′)(PMe3)] / Transition Metal Complexes with Sulfur Ligands, LXXVI Redox and Addition Reactions of Nickel Complexes with Multidentate Thioether-Thiolato Ligands. X-Ray Structure Determinations of (NMe4)2[Ni(′S2′)2] and [Ni(′S4–C3′)(PMe3)]

1991 ◽  
Vol 46 (12) ◽  
pp. 1601-1608 ◽  
Author(s):  
Dieter Sellmann ◽  
Stefan Fünfgelder ◽  
Falk Knoch ◽  
Matthias Moll
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Structure Analysis ◽  
Transition Metal Complexes ◽  
Nickel Complexes ◽  
Addition Reactions ◽  
Coordination Geometry ◽  
X Ray ◽  
Square Planar ◽  
Structure Determinations

In order to elucidate specific properties of nickel sulfur complexes, redox and addition-elimination reactions of [Ni(′OS4')]2, [Ni(′NHS4')]2, [Ni(′S5')], [Ni('S4—C5')], and [Ni('S4—C3')] were investigated ('OS4′ 2' = 2,2'-bis(2-mercaptophenylthio)diethylether(2—), 'NHS4'2- = 2,2'-bis(2-mercaptophenylthio)diethylamine(2—), 'S5'2- = 2,2'-bis(2-mercaptophenylthio)diethylsulfide(2—), 'S4-C5'2- = 1,5-bis(2-mercaptophenylthio)pentane(2—), 'S4—C3'2- = 1,3-bis(2-mercaptophenylthio)propane(2—)).Cyclovoltammetry proves the complexes to be redox inactive between —1.4 and +0.8 V vs. NHE. Above +0.8 V the complexes are irreversibly oxidized, below —1,4 V desalkylation takes place and [Ni(′S,′)2]2- is formed. An X-ray structure analysis was carried out of (NMe4)2[Ni(′S2')2], which shows a planar anion with the Ni center in a nearly perfect square planar coordination. Distances and angles are practically identical to those in the [Ni(′S2')2-] monoanion.The complexes coordinate only phosphines as coligands, but thioether donors simultaneously decoordinate and, dependant of reaction temperature, mono- or trisphosphine complexes are formed. [Ni(′S4—C3')(PMe3)] was characterized by X-ray structure analysis and exhibits a square pyramidal coordination geometry.

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