X-ray Structure Analysis Online
Online ISSN : 1883-3578
ISSN-L : 1883-3578
最新号
選択された号の論文の2件中1~2を表示しています
Part 1
  • Masahiro MIKURIYA, Kazuki TANIGUCHI, Yoshiki KOYAMA, Hiroaki WATANABE, ...
    2020 年 36 巻 p. 1-2
    発行日: 2020/01/10
    公開日: 2020/01/10
    ジャーナル フリー
    電子付録

    Sulfur S8 was isolated from a reaction solution of thiourea and bismuth nitrate in N,N-dimethylformamide. The crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. It crystallizes in the orthorhombic space group Fddd with a = 10.3310(8)Å, b = 12.6786(10)Å, c = 24.3519(19)Å, V = 3189.7(4)Å3, Dx = 2.136 g/cm3, and Z = 6. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0220 and 0.0570, respectively, for all 1864 independent reflections. The S8 molecule has a crown-shaped ring structure with the α-form.

Part 2
  • Masahiro MIKURIYA, Shuichi HIROSHIMA, Yoshiki KOYAMA, Keisuke TERADA, ...
    2020 年 36 巻 p. 3-5
    発行日: 2020/02/10
    公開日: 2020/02/10
    ジャーナル フリー
    電子付録

    Sodium tetraperoxidochromate(V), Na3Cr(O2)4·14H2O, was prepared and the crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. It crystallizes in the triclinic space group P1 with a = 7.5349(6)Å, b = 8.6378(7)Å, c = 8.9921(7)Å, α = 64.087(1), β = 81.565(1), γ = 69.348(1)°, V = 492.56(7)Å3, Dx = 1.690 g/cm3, and Z = 1. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0277 and 0.0722, respectively, for all 2310 independent reflections. The chromium ion is coordinated by four peroxido ligands in a distorted dodecahedral geometry, whereas each sodium ion is coordinated by six water molecules to form an octahedral Na(H2O)6 unit, which is connected by two bridging water molecules to form zigzag [cis-{Na(H2O)2(μ-H2O)4}-trans-{Na(H2O)2(μ-H2O)4}]n chain molecules in the crystal.

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