Abstract
Abstract The reaction of the disodium salt of 2,2-dicyano-1,1-ethylenedithiol (i-mnt) with the cyclopentadienyl compound Cp∗Ru(NO)Cl2 in methanol gives the new piano-stool compound Cp∗Ru(NO)(i-mnt), (1), in high yield. 1 has been isolated and characterized in solution by IR and NMR (1H and 13C NMR) spectroscopic methods, and the solid-state structure has been confirmed by X-ray diffraction analysis. Cp∗Ru(NO)(i-mnt) crystallizes, as the CH2Cl2 solvate, in the orthorhombic space group Pbcm, a = 9.8872(6) A, b = 13.5269(8) A, c = 15.0557(8) A, V = 2013.6(2) A3, Z = 4, d calc = 1.621 g · cm−3; R = 0.0330, Rw = 0.0353 for 1068 observed reflections with I> 3[sgrave](I). The observed Ru-N-O bond angle of 168.9(7)° in the X-ray structure of 1 confirms the near linear nature of the nitrosyl linkage. The oxidation/reduction properties of 1 have been explored by cyclic voltammetry, which revealed the presence of a quasi-reversible one-electron reduction (0/1−) and an irreversible oxidation. A comparison of the elec...
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