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Crystal structures of trans-dichlorobis(ethylendiamine) rhodium(III) with univalent anions

Research paper by I. A. Baidina, S. N. Vorob’eva, A. I. Smolentsev, A. V. Belyaev

Indexed on: 31 Mar '11Published on: 31 Mar '11Published in: Journal of Structural Chemistry



Abstract

The crystal structures of the compounds trans-[Rh(en)2Cl2]Cl2 · H5O2 (I), trans-[Rh(en)2Cl2]ClO4 (II), and trans-[Rh(en)2Cl2]ReO4 (III) are determined. The crystal data are: I, a = 10.860(3) Å, b = 7.795(2) Å, c = 9.023(3) Å; β = 111.56(10)°, P21/c space group, Z = 4, dx = 1.875 g/cm3; II, a = 6.593(2) Å, b = 8.309(3) Å, c = 11.922(4) Å, α = 83.55(10)°, β = 79.80(10)°, γ = 75.38(10)°, P\( \bar 1 \) space group, Z = 2, dx = 2.106 g/cm3; III, a = 6.533(2) Å, b = 16.391(4) Å, c = 12.411(3) Å; β = 98.30(10)°, P21/c space group, Z = 4, dx = 2.749 g/cm3. The compounds are examined by IR spectroscopy and powder XRD. The solubility of the isolated crystalline phases in water decreases in the following order: trans-[Rh(en)2Cl2]Cl2·H5O2 > trans-[Rh(en)2Cl2]ClO4 > trans-[Rh(en)2Cl2]ReO4.