SYNTHESIS, CRYSTAL STRUCTURE, ELECTROCHEMICAL AND SPECTROSCOPIC PROPERTIES OF [RU(BBPEN)][PF6]CENTER-DOT-H2O - CRYSTAL STRUCTURE OF THE H(2)BBPEN [H(2)BBPEN=N,N'-BIS(2-HYDROXYBENZYL)-N,N'-BIS(2-METHYLPYRIDYL)ETHYLENEDIAM INE]

摘要

The X-ray crystal structures of N,N'-bis(2-hydroxybenzyl)-N,N'-bis(2-methyl-pyridyl)ethylenediamine (H(2)BBPEN) and the complex [Ru(BBPEN)][PF6]. H2O have been determined. In this complex the two phenolate oxygens, the two aliphatic nitrogens and the pyridine rings lie in cis positions. Two reversible processes at E(1/2) + 0.854 V (Ru-IV/Ru-III) and -0.056 V (Ru-III/Ru-II) versus Fc(+)/Fc, consistent with one-electron transfer, were detected by cyclic voltammetry. The EPR measurements for the Ru-III complex in solid state at room temperature have shown three g-tensor values: g(x) = 2.4503, g(y) = 2.2077 and g(z) = 1.19131, which are in agreement with the distortion of the structure for the complex determined by X-ray diffraction. [References: 18]