cis-Aquachlorobis(ethane-1,2-diamine)ruthenium(III) trifluoromethanesulfonate: Crystal structure and hydrolysis kinetics

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Abstract
The pale yellow ruthenium(III) complex cis-[Ru(H2NCH2CH2NH2)2(OH2)Cl] (CF3S03)2.H2O crystallized in the space group P1, a 11.661(2), b 9.961(2), c 9.130(2) �, α 78.83(3), β70.42(2), γ 85.29(2)�, Z 2. The Ru-N, Ru-Cl and Ru-O bond distances in the essentially octahedral ion are 2.10 (average), 2.323(1) and 2.093(2) � respectively. The complex hydrolyses with retention of configuration in aqueous acid (0.01 M HOSO2CF3, kaq 2.70 x 10-5S-1 at 25�C, ∆H ? 90.6(� 1.5) kJ mol-1, ∆S ?-28 (� 5) 5 K-1 mol-1) and base (0.01 M NaOH, koh 0.44 mol-1 1. s-1 at 25�C, ∆H‡ 73.5(� 2.0) kJ mol-1, ∆S‡-43(� 7) JK-1 mol-1).

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