Structures of Some Complexes Containing the Ru(NH3)63+ Unit

Abstract

The X-ray crystal structure determinations of three complexes of hexaammineruthenium(III) are reported. They are: (1) NH₄⁺ .Ru(NH₃)₆³⁺ .2ZnCl₄²¯, a 8·566(2), c 12·829(4) Å, V 941·3(4) ų,I 4/m, Z = 2, R₁(2σ) = 0·021, wR₂ = 0·054; (2) Ru(NH₃)₆³⁺ .ZnCl4 ²¯.Cl¯.H₂O, a 8·174(2), b 8·979(2), c 10·123(2) Å, α 80·20(2), β 86·41(2), γ 87·23(2)°, V 730·2(3) ų , P^-1, Z = 2, R₁(2σ) = 0·027, wR₂ = 0·074; (3) Ru(NH₃)₆³⁺ .HgCl₄²¯.HgCl₃¯.HgCl₂.H₂O, a 8·055(3), b 21·493(11), c 12·625(4) Å, β 90·52(3)°, V 2186(2) ų , P2₁/c, Z = 4, R₁(2σ) = 0·058, wR₂ = 0·142. The hexaammineruthenium(III) cations in these structures adopt differing conformations in respect of hydrogen atom disposition. Compounds (1) and (2) have disordered NH₃ groups in the Ru(NH₃)₆³⁺ cations, and in compound (1) the NH₄⁺ cation is disordered as well.