Merola Joseph S, Slebodnick Carla, Houser Christopher
Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
Acta Crystallogr E Crystallogr Commun. 2015 Apr 22;71(Pt 5):528-30. doi: 10.1107/S2056989015006672. eCollection 2015 May 1.
The reaction between IrCl3·xH2O in methanol led to the formation of small amounts of the title compound, [Ir2Cl6(CH3OH)4]·2H2O, which consists of two IrCl4O2 octa-hedra sharing an edge via chloride bridges. The mol-ecule lies across an inversion center. Each octa-hedron can be envisioned as being comprised of four chloride ligands in the equatorial plane with methanol ligands in the axial positions. A lattice water mol-ecule is strongly hydrogen-bonded to the coordinating methanol ligands and weak inter-actions with coordinating chloride ligands lead to the formation of a three-dimensional network. This is a surprising structure given that, while many reactions of iridium chloride hydrate are carried out in alcoholic solvents, especially methanol and ethanol, this is the first structure of a chloridoiridium compound with only methanol ligands.
甲醇中的三氯化铱水合物（IrCl₃·xH₂O）发生反应，生成了少量的标题化合物[Ir₂Cl₆(CH₃OH)₄]·2H₂O，它由两个通过氯桥共用一条边的IrCl₄O₂八面体组成。该分子位于一个对称中心上。每个八面体可设想为由赤道平面上的四个氯配体和轴向位置上的甲醇配体组成。一个晶格水分子与配位的甲醇配体形成强氢键，与配位的氯配体的弱相互作用导致形成三维网络。考虑到虽然水合氯化铱的许多反应是在醇类溶剂（尤其是甲醇和乙醇）中进行的，但这是首个仅含有甲醇配体的氯铱化合物结构，所以这是一个令人惊讶的结构。
