Crystal Structures and Characterizations of (Nitrato-O)(Nitrato-O,O′)(η<sup>6</sup>-Hexamethylbenzene)Ruthenium(II) and Di(Trifluoroacetato-O)(H<sub>2</sub>O-O)(η<sup>6</sup>-Hexamethylbenzene) Ruthenium(II)
作者:Xiu Lian Lu、Weng Kee Leong、Lai Yoong Goh、Tzi Sum Andy Hor、Jagadese J. Vittal
DOI:10.1080/15533170500360164
日期:2005.12.1
The title complexes [(HMB)Ru(NO3)(2)] (HMB = eta(6)-C6Me6) (1) and [(HMB)Ru(O2CCF3)(2)(H2O)] (2) were spectroscopically characterized and their structures were determined by single-crystal diffraction analysis. In both compounds, the Ru atom is eta(6)-coordinated to a hexamethylbenzene ring and three oxygen donor atoms in a "three-legged piano stool" arrangement. In the asymmetric unit of 1, ruthenium atom is coordinated to two nitrato ligands, one of which is eta(1)-O coordinated and the second bidentate via both oxygen atoms; while in the symmetric unit of 2, two disordered trifluoroacetate ligands are monodentate, symmetrically bound to the ruthenium atom, and the pseudo-octahedral geometry is completed by an oxygen atom from a H2O molecule, which is hydrogen-bonded to both acetate ligands.