Mudring Anja-Verena, Timofte Tudor, Babai Arash
Institut für Anorganische Chemie, Universität zu Köln, Greinstrasse 6, Köln 50939, Germany.
Inorg Chem. 2006 Jun 26;45(13):5162-6. doi: 10.1021/ic051234s.
Ln6(mu6-O)(mu3-OH)8(H2O)24]I8(H2O)(8) (Ln = Nd, Eu, Tb, Dy) compounds are obtained as the final hydrolysis products of lanthanide triiodides in an aqueous solution. Their X-ray crystal structure features a body-centered arrangement of oxygen-centered {Ln6X8}8+ cluster cores: [Nd6(mu6-O)(mu3-OH)8(H2O)24]I8(H2O)8 [Pearson code oP156, orthorhombic, Pnnm (No. 58), Z = 2, a = 1310.4(3) pm, b = 1502.1(3) pm, c = 1514.9(3) pm, 3384 reflections with I0 > 2sigma(I0), R1 = 0.0340, wR2 = 0.0764, GOF = 1.022, T = 298(2) K], [Eu6(mu6-O)(mu3-OH)8(H2O)24]I8(H2O)8 [Pearson code oP156, orthorhombic, Pnnm (No. 58), Z = 2, a = 1306.6(2) pm, b = 1498.15(19) pm, c = 1499.41(18) pm, 4262 reflections with I0 > 2sigma(I0), R1 = 0.0540, wR2 = 0.0860, GOF = 0.910, T = 298(2) K], [Tb6(mu6-O)(mu3-OH)8(H2O)24]I8(H2O)8 [Pearson code oP156, orthorhombic, Pnnm (No. 58), Z = 2, a = 1296.34(5) pm, b = 1486.13(7) pm, c = 1491.88(6) pm, 4182 reflections with I0 > 2sigma(I0), R1 = 0.0395, wR2 = 0.0924, GOF = 1.000, T = 298(2) K], and [Dy6(mu6-O)(mu3-OH)8(H2O)24]I8(H2O)8 [Pearson code oP156, orthorhombic, Pnnm (No. 58), Z = 2, a = 1296.34(5) pm, b = 1486.13(7) pm, c = 1491.88(6) pm, 3329 reflections with I0 > 2sigma(I0), R1 = 0.0389, wR2 = 0.0801, GOF = 0.992, T = 298(2) K.
[Ln₆(μ₆ - O)(μ₃ - OH)₈(H₂O)₂₄]I₈(H₂O)₈（Ln = Nd、Eu、Tb、Dy）化合物是镧系元素三碘化镥在水溶液中的最终水解产物。它们的X射线晶体结构特征是以氧为中心的{Ln₆X₈}⁸⁺簇核的体心排列：[Nd₆(μ₆ - O)(μ₃ - OH)₈(H₂O)₂₄]I₈(H₂O)₈ [皮尔逊编码oP156，正交晶系，Pnnm（编号58），Z = 2，a = 1310.4(3) pm，b = 1502.1(3) pm，c = 1514.9(3) pm，3384次反射，I₀ > 2σ(I₀)，R₁ = 0.0340，wR₂ = 0.0764，拟合优度 = 1.022，T = 298(2) K]，[Eu₆(μ₆ - O)(μ₃ - OH)₈(H₂O)₂₄]I₈(H₂O)₈ [皮尔逊编码oP156，正交晶系，Pnnm（编号58），Z = 2，a = 1306.6(2) pm，b = 1498.15(19) pm，c = 1499.41(18) pm，4262次反射，I₀ > 2σ(I₀)，R₁ = 0.0540，wR₂ = 0.0860，拟合优度 = 0.910，T = 298(2) K]，[Tb₆(μ₆ - O)(μ₃ - OH)₈(H₂O)₂₄]I₈(H₂O)₈ [皮尔逊编码oP156，正交晶系，Pnnm（编号58），Z = 2，a = 1296.34(5) pm，b = 1486.13(7) pm，c = 1491.88(6) pm，4182次反射，I₀ > 2σ(I₀)，R₁ = 0.0395，wR₂ = 0.0924，拟合优度 = 1.000，T = 298(2) K]，以及[Dy₆(μ₆ - O)(μ₃ - OH)₈(H₂O)₂₄]I₈(H₂O)₈ [皮尔逊编码oP156，正交晶系，Pnnm（编号58），Z = 2，a = 1296.34(5) pm，b = 1486.13(7) pm，c = 1491.88(6) pm，3329次反射，I₀ > 2σ(I₀)，R₁ = 0.0389，wR₂ = 0.0801，拟合优度 = 0.992，T = 298(2) K。
