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- W1532759969 abstract "The η1-dithioester complexes W(CO)4(L) (η1-SC(Me)SMe) (L CO, P-i-Pr3) add PMe3 giving the betaines W(CO)4(L)(SC(Me)(SMe)(PMe3). The uncoordinated dithioesters yield similar adducts −C(R)(SMe)P+Me3 (R Me, Ph) which can be alkylated to the phosphonium salts [RC(SMe)2PMe3]I. Correspondingly, reaction with mer-W(CO)3)dmpe)(η2-SC(Me)SMe) produces inter alia a metal-coordinated thioacylphosphonium ion. Coordinately unsaturated metal fragments add to η3-dithioester complexes with formation of the binuclear compounds (CO)3(i-Pr3P)W(μ,η3-SC(Me)SMe)W(CO)5 and (CO)3(Ph3P)Cr(μ,η3-SC(Me)SMe)Cr-(CO)3(dppe), respectively. With methyl iodide the η2-dithioester complexes yield the cations mer-[W(CO)3(dppe)(η2-MeSC(R)SMe)]+ (R Me, Ph), whereas the η3 derivatives give the neutral compounds WI(CO)3(PR3)(η2-MeSC(Me)SMe) (R i-Pr, Cy, Ph). The η3-dithiocarbenium complex WI(CO)3(η3-C(Me)(SMe)2) which is formed as a side product for R Ph was characterized by X-ray crystallography. The η1-dithioester complexes W(CO)4(L) (η1-SC(Me)SMe) (L CO, P-i-Pr3) add PMe3 giving the betaines W(CO)4(L)(SC(Me)(SMe)(PMe3). The uncoordinated dithioesters yield similar adducts −C(R)(SMe)P+Me3 (R Me, Ph) which can be alkylated to the phosphonium salts [RC(SMe)2PMe3]I. Correspondingly, reaction with mer-W(CO)3)dmpe)(η2-SC(Me)SMe) produces inter alia a metal-coordinated thioacylphosphonium ion. Coordinately unsaturated metal fragments add to η3-dithioester complexes with formation of the binuclear compounds (CO)3(i-Pr3P)W(μ,η3-SC(Me)SMe)W(CO)5 and (CO)3(Ph3P)Cr(μ,η3-SC(Me)SMe)Cr-(CO)3(dppe), respectively. With methyl iodide the η2-dithioester complexes yield the cations mer-[W(CO)3(dppe)(η2-MeSC(R)SMe)]+ (R Me, Ph), whereas the η3 derivatives give the neutral compounds WI(CO)3(PR3)(η2-MeSC(Me)SMe) (R i-Pr, Cy, Ph). The η3-dithiocarbenium complex WI(CO)3(η3-C(Me)(SMe)2) which is formed as a side product for R Ph was characterized by X-ray crystallography." @default.
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- W1532759969 date "1987-07-01" @default.
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- W1532759969 title "Die koordinationscheme CS-funktioneller verbindungen" @default.
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- W1532759969 doi "https://doi.org/10.1016/0022-328x(87)80247-4" @default.
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