Research Article: Bis[trans-dichloridobis(propane-1,3-diamine-κ2N,N′)chromium(III)] tetra­chloridozincate determined using synchrotron radiation

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Dohyun Moon, Md Abdus Subhan, Jong-Ha Choi.


In the title compound, [CrCl2(C3H10N2)2]2[ZnCl4], the CrIII atom is coordinated by four N atoms of propane-1,3-diamine (tn) and two Cl atoms in a trans arrangement, displaying a distorted octa­hedral geometry with crystallographic inversion symmetry; the Zn atom in the [ZnCl4]2− anion lies on a -4 axis. The orientations of the two six-membered chelate rings in the complex cation are in an anti chair–chair conformation with respect to each other. The Cr—N bond lengths are 2.087 (6) and 2.097 (6) Å. The Cr—Cl and Zn—Cl bond lengths are 2.3151 (16) and 2.3255 (13) Å, respectively. Weak inter­molecular hydrogen bonds involving the tn NH2 groups as donors and chloride ligands of the anion and cation as acceptors are observed.

Partial Text

For the synthesis, see: House (1970 ▶). For the structures of trans-[Cr(tn)2L2]ClO4 (L = F, Cl, Br), see: Vaughn & Rogers (1985 ▶); Choi & Clegg (2011 ▶); Choi et al. (2012 ▶). For the structures of trans-[Cr(Me2tn)2Cl2]ClO4 and trans-[Cr(Me2tn)2Cl2]2ZnCl4, see: Choi et al. (2008 ▶, 2011 ▶).




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