科研之友
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摘要
Diamagnetic K-4[M(CN)(6)], M = Ru-II, Os-II are easily and quantitatively transformed into paramagnetic [M(CN)(6)](3) in methanol with the help of crown ethers. Hexacyanoosmate(II) is oxidized by air, whereas for hexacyanoruthenate(II), H2O2 is needed. These two cyanometallates, (K@18-crown-6)(3)[M-(CN)(6)]center dot nSolv, were characterized both in solution and in the solid state. The compounds were obtained as single crystals, and their crystal and molecular structures were determined by X-ray diffraction analysis. In the proposed synthetic method, the use of methanol minimizes hydrolysis and considerably increases the yield and purity.
- 出版日期2011-2
