Alkali-Metal-Controlled Self-Assembly of Crown-Shaped Ring Complexes of Lanthanide/[α-AsW9O33]9−: [K⊂{Eu(H2O)2(α-AsW9O33)}6]35− and [Cs⊂{Eu(H2O)2(α-AsW9O33)}4]23−


  • This work was supported by Grants-in-Aid for Scientific Research, No. 10304055 and 14204067 from the Ministry of Education, Science, Sports, and Culture and No. 99P01201 from RFTF/JSPS, and by Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation. Approximately 50 % of this work was presented at the Conference of “Metal-assembled Complexes, Grant-in-Aid for Scientific Research on Priority Area” in Sendai, on December 11–13, 2001 and written up in the proceedings (P117) of that meeting.


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Die Krönung: Die L-förmige Baueinheit [Ln(H2O)2(α-AsW9O33)]6− (Ln=Lanthanoid) ermöglicht den eleganten Aufbau kronenförmiger Strukturen [{Ln(H2O)2(α-AsW9O33)}n]6n (n=gerade Zahl ≥4), die Kationen einschließen können. Die Mühlrad-Propellerstruktur links besteht aus einem K+-Ion und sechs [α-AsW9O33]9−-Liganden, in der Windrad-Struktur rechts dagegen ist ein Cs+-Ion von vier [α-AsW9O33]9−-Liganden umgeben.