Synthesis, X-ray structures and NIR chiroptical properties of a series of dinuclear lanthanide(<scp>iii</scp>) complexes [Ln<sub>2</sub>{μ-(S- or RS-pba)}<sub>4</sub>(HBpz<sub>3</sub>)<sub>2</sub>]; novel configurational chirality due to non-bonding Ln⋯O interactions
作者:Md. Abdus Subhan、Takayoshi Suzuki、Akira Fuyuhiro、Sumio Kaizaki
DOI:10.1039/b304928k
日期:——
depending on the Ln(III) ionic radii: mononuclear complexes from Yb(III) to Ho(III) and dinuclear ones from Dy(III) to Nd(III). Only the dinuclear complexes for all of the Ln(III) studied were formed with a molar ratio 1 ∶ 1 ∶ 2 of Ln ∶ KHBpz3 ∶ pba. X-Ray structural analysis confirmed dinuclear structures with CH⋯π interactions and linear B⋯Ln⋯Ln⋯B arrangements for the Ln(μ-RS-pba)4Ln(HBpz3)2 (Yb , Ho , Dy
两个系列的单核[Ln III(S-或RS -pba)(HBpz 3)2 ](Ln = Tm,Er,Ho)和双核[Ln 2 μ-(S-或RS -pba)} 4(HBpz 3 - )2 ](Ln为镱,何,钆,镝,钕)络合物(PBA = RS -和/或小号-2-苯基丁酸,HBpz 3 =氢三(吡唑-1-基)硼酸盐)中制备和研究了它们的X射线结构和近红外手性。Ln:KHBpz 3摩尔比为1:2:1的合成 :pba导致形成单核或双核复合物,具体取决于Ln(III)离子半径:从Yb(III)到Ho(III)的单核复合物以及从Dy(III)到Nd(III)的双核复合物。仅以Ln:KHBpz 3 :pba的摩尔比1:1:2形成所研究的所有Ln(III)的双核配合物。X射线结构分析证实了Ln(μ- RS -pba)4 Ln(HBpz 3)2具有CHπ相互作用和线性B⋯Ln⋯Ln⋯B排列的双核结构。 (Yb