title: A benzene-rich pseudopolymorph of bis[mu-1,3-bis(pentafluorophenyl)propane-1,3-dionato]-kappa(3)O,O':O';kappa(3)O:O,O'-bis{aqua[1,3-bis(pentafluorophenyl)propane-1,3-dionato-kappa(2)O,O']nickel(II)} benzene tetrasolvate.
abstract: The title complex comprises two Ni(2+) ions, four fluorinated ligands and two water molecules in a centrosymmetric dinuclear complex. This compound was crystallized from benzene-CH(2)Cl(2), and two types of crystals, viz. the title benzene tetrasolvate, [Ni(2)(C(15)HF(10)O(2))(4)(H(2)O)(2)].4C(6)H(6), (I), and the previously reported benzene disolvate, [Ni(2)(C(15)HF(10)O(2))(4)(H(2)O)(2)].2C(6)H(6), (II) [Hori et al. (2009). Bull. Chem. Soc. Jpn, 82, 96-98], were obtained as pseudopolymorphs. In the crystal structure of (I), the four benzene solvent molecules interact closely with all the pentafluorophenyl groups of the complex through arene-perfluoroarene interactions. The molecular structures of the two compounds show essentially the same conformation, although the benzene molecules are accommodated in a columnar packing in (I), while they are isolated from each other in (II).
authors.affiliation: School of Science, Kitasato University, Kitasato 1-15-1, Sagamihara, Kanagawa 228-8555, Japan. hori@kitasato-u.ac.jp
authors.forename: Akiko
authors.initials: A
authors.lastname: Hori
authors.forename: Masaya
authors.initials: M
authors.lastname: Mizutani