title: Alkali-metal-controlled self-assembly of crown-shaped ring complexes of lanthanide/[alpha-AsW9O33]9-: [K subset [Eu(H2O)2(alpha-AsW9O33)]6]35- and [Cs subset [Eu(H2O)2(alpha-AsW9O33)]4]23-.
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Fukaya
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Yamase