Dithiolene complexes as metallo-ligands: a crown-ether approach
نویسندگان
چکیده
منابع مشابه
Paramagnetic dithiolene complexes as metallo-ligands: ether/thioether coordination.
The secondary coordination ability of a paramagnetic nickel dithiolene complex, bearing an ether coordinating function within a nine-membered flexible ring, has been demonstrated in its [NiCl(DMF)(2)](+) complex, through coordination by both ether and thioether functions, allowing for a ferromagnetic interaction between both paramagnetic entities.
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Complexes of the type ZnS6(TMEDA), ZnS4(PMDETA), and ZnS4(Me3TACN) react with electrophilic alkenes to give dithiolene complexes ZnS2C2R2(amine)n. The Me3TACN complex is the most reactive, while the more conveniently prepared PMDETA complex also undergoes this reaction at useful rates. The following alkenes were successfully tested: C2H2(CO2Me)2 (cis and trans isomers), C2H3(CO2Me), C2H3(CN), 1...
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Complex formation between the silver(I) ion and monoazaand diaza-crown ethers has been studied in five polar, nonaqueous solvents using potentiometric techniques. The stability constants are spread over seven orders of magnitude, and the major contributor to this variation is the solvation of the silver(I) cation. The ring-size dependence of the stability constants is determined both by the cor...
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Crown ethers 12-crown-4 (12C4), benzo-15-crown-5 (B15C5), 18-crown-6 (18C6), nitrobenzo-18-crown-6 (NB18C6) dibenzo-18-crown-6 (DB18C6) and dicyclohexyl-18-crown-6 (DC18C6), dissolved in dichloromethane, are able to form oxonium-ion complexes in contact with aqueous sulfuric and hydrochloric acid solutions. This ability allows the transfer of Cr(VI) oxanions from the acid media, through an ...
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