Sivanesan Dharmalingam, Kim Hyung Min, Sungho Yoon
Department of Bio & Nano Chemistry, College of Natural Sciences, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Republic of Korea.
Acta Crystallogr C. 2013 Jun;69(Pt 6):584-7. doi: 10.1107/S0108270113009633. Epub 2013 May 10.
The title complex, [Rh(C10H15)Cl(C14H12N2O4)]Cl·2C4H5NO3, has been synthesized by a substitution reaction of the precursor [bis(2,5-dioxopyrrolidin-1-yl) 2,2'-bipyridine-4,4'-dicarboxylate]chlorido(pentamethylcyclopentadienyl)rhodium(III) chloride with NaOCH3. The Rh(III) cation is located in an RhC5N2Cl eight-coordinated environment. In the crystal, 1-hydroxypyrrolidine-2,5-dione (NHS) solvent molecules form strong hydrogen bonds with the Cl(-) counter-anions in the lattice and weak hydrogen bonds with the pentamethylcyclopentadienyl (Cp*) ligands. Hydrogen bonding between the Cp* ligands, the NHS solvent molecules and the Cl(-) counter-anions form links in a V-shaped chain of Rh(III) complex cations along the c axis. Weak hydrogen bonds between the dimethyl 2,2'-bipyridine-4,4'-dicarboxylate ligands and the Cl(-) counter-anions connect the components into a supramolecular three-dimensional network. The synthetic route to the dimethyl 2,2'-bipyridine-4,4'-dicarboxylate-containing rhodium complex from the [bis(2,5-dioxopyrrolidin-1-yl) 2,2'-bipyridine-4,4'-dicarboxylate]rhodium(III) precursor may be applied to link Rh catalysts to the surface of electrodes.
标题配合物[Rh(C₁₀H₁₅)Cl(C₁₄H₁₂N₂O₄)]Cl·2C₄H₅NO₃是通过前体[双(2,5 - 二氧代吡咯烷 - 1 - 基)2,2'-联吡啶 - 4,4'-二羧酸酯]氯代(五甲基环戊二烯基)铑(III)氯化物与NaOCH₃的取代反应合成的。Rh(III)阳离子位于一个八配位的RhC₅N₂Cl环境中。在晶体中，1 - 羟基吡咯烷 - 2,5 - 二酮（NHS）溶剂分子与晶格中的Cl⁻抗衡阴离子形成强氢键，并与五甲基环戊二烯基（Cp*）配体形成弱氢键。Cp*配体、NHS溶剂分子和Cl⁻抗衡阴离子之间的氢键沿着c轴在Rh(III)配合物阳离子的V形链中形成连接。2,2'-联吡啶 - 4,4'-二羧酸二甲酯配体与Cl⁻抗衡阴离子之间的弱氢键将各组分连接成一个超分子三维网络。从[双(2,5 - 二氧代吡咯烷 - 1 - 基)2,2'-联吡啶 - 4,4'-二羧酸酯]铑(III)前体合成含2,2'-联吡啶 - 4,4'-二羧酸二甲酯的铑配合物的合成路线可用于将Rh催化剂连接到电极表面。
