Research Article: Tris(1,10-phenanthroline-κ2N,N′)iron(II) bis­[(1,10-phenanthroline-κ2N,N′)tetra­kis­(thio­cyanato-κN)chromate(III)] acetonitrile tris­olvate monohydrate

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Valentyna V. Semenaka, Oksana V. Nesterova, Volodymyr N. Kokozay, Volodymyr V. Bon.


Single crystals of the title heterometallic compound, [Fe(C12H8N2)3][Cr(NCS)4(C12H8N2)]2·3CH3CN·H2O or [Fe(Cphen)3][Cr(NCS)4(phen)]2·3CH3CN·H2O, were pre­pared using the one-pot open-air reaction of iron powder, Reineckes salt and 1,10-phenanthroline (phen) in acetonitrile. The asymetric unit consists of an [Fe(phen)3]2+ cation, two [Cr(phen)(NCS)4]− anions, three acetonitrile solvent mol­ecules and a water mol­ecule. The Fe and Cr atoms both show a slightly distorted octa­hedral FeN6 and CrN6 coordination geometry with adjacent angles in the range 79.67 (12)–95.21 (12)°. No classical hydrogen bonding involving the water molecule is observed.

Partial Text

For background to direct synthesis, see: Makhankova (2011 ▶). For background to the use of Reineckes salt as a source of building blocks or metalloligands, see: Zhang et al. (2001 ▶); Cucos et al. (2006 ▶); Cherkasova & Gorunova (2003 ▶); Nikitina et al. (2009 ▶); Kolotilov et al. (2010 ▶). For Fe—N bond lengths in iron–phen derivatives, see: Alonso et al. (2005 ▶). For a related structure, see: Semenaka et al. (2011 ▶).