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Fluoro-, Chloro- und Bromo-Wolfram(VI)-Alkinkomplexe. Die Kristallstrukturen von [K(18-Krone-6)][WF5(Ph – C≡C – H)] · CH3CN und [WCl4(Ph – C ≡ C – Se – n – C4H9)(CH3CN)] / Fluoro-, Chloro-, and Bromo-Tungsten(VI) Alkyne Complexes. The Crystal Structures of [K(18-Crown-6)][WF5(Ph — C ≡ C — H)] · CH3CN and [WCl4(Ph — C ≡ C — Se — n — C4H9)(CH3CN)]
1991
Zeitschrift für Naturforschung. B, A journal of chemical sciences
Several tungsten alkyne complexes of the type [WCl4(R – C ≡ C – H)]2 and [WCl4(R – C ≡ C — R′)]2 have been prepared by reactions of WCl6 with the alkynes in the presence of C2Cl4. Treating with BrSiMe3 leads to corresponding bromo complexes, whereas reactions of NaF and KF, respectively, in acetonitrile solution in the presence of crown ethers yield the fluoro complexes [Na(15-crown-5)][WF5(R – C ≡ C – R′)] and [K(18-crown-6)][WF5(R – C ≡ C – R ′)], respectively. All complexes were
doi:10.1515/znb-1991-0805
fatcat:bc2keb5pb5culbepr45doyzq5i