Abstract
The title compounds, mer-trichloro- cis-bis(1-methylimidazole)dimethyl sulfoxideruthenium(III) ( 1) and 4-ethylpyridinium trans-(4-ethylpyridine) (dimethyl sulfoxide)tetrachlororuthenate(III) ( 2) have been synthesized and structurally characterized. Crystals of 1 [RuCl 3(C 4H 6N 2) 2(C 2H 6OS)]·0.5(C 3H 6O) are monoclinic, space group P2/ c with a = 16.836(9), b = 8.646(3), c = 14.017(7) A ̊ , β = 110.19(2)°, Z = 4 . Crystals of 2 [RuCl 4(C 7H 9N)(C 2H 6OS)][C 7H 10N] are monoclinic, space group P2 1/ n with a = 7.996(1), b = 11.670(1), c = 23.979(3) A ̊ , β = 98.39(1)°, Z = 4 . The sulfoxide ligands are S-bonded and trans to the N-planar ligands in both Ru(III) complexes. The two 1Me-Im ligands in 1 are cis to each other and the arrangement is such that its B/B′ interbase dihedral angle is 65.6°. B/RuL 4 and B′/RuL 4 Dihedral angles are 26.8 and 66.8°, respectively. The 4Et-Py plane in 2 bisects the ClRuCl bond angles. The conformation of the planar N-ligand observed in the X-ray structures is discussed in terms of an interaction between the ligands.
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