Low‐dimensional compounds containing cyanide groups. XXV. Synthesis, spectroscopic properties and crystal structures of two ionic iron(II) complexes with tricyanomethanide: tris(1, 10‐phenanthroline‐κ2N, N′)iron(II) bis(tricyanomethanide) and tris(2, 2′‐bipyridine‐κ2N, N′)iron(II) bis(tricyanomethanide) sesquihydrate. Issue 5 (8th April 2014)

• Record Type: Journal Article
• Authors: Potočňák, Ivan; Váhovská, Lucia; Herich, Peter
• Is Part Of: Acta crystallographica. Volume 70:Issue 5(2014:May)
• Page Start: 432
• Page End: 436
• Publication Date: 2014-04-08
• Subjects: Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229614006512
• Languages: English
• ISSNs: 2053-2296

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Two new diamagnetic coordination compounds, [Fe(phen)₃][C(CN)₃]₂, (I), and [Fe(bpy)₃][C(CN)₃]₂·1.5H₂O, (II), have been synthesized and characterized by single‐crystal X‐ray diffraction analysis, and IR and UV–Vis spectroscopy (phen is 1, 10‐phenanthroline, C₁₂H₈N₂, and bpy is 2, 2′‐bipyridine, C₁₀H₈N₂). Both compounds are ionic with distorted octahedral [Fe(phen)₃]²⁺ or [Fe(bpy)₃]²⁺ complex cations, with average Fe—N distances of 1.977 (2) and 1.971 (3) Å, respectively, and two uncoordinated planar tricyanomethanide, or [C(CN)₃]⁻, counter‐anions balancing the positive charges of the cations. Solvent water molecules and tcm anions in (II) are linked <italic>via</italic> O—H...N hydrogen bonds into negatively charged layers and the interlayer space is filled by [Fe(bpy)₃]²⁺ cations. The structures of (I) and (II) are stabilized by π–π interactions between the stacked aromatic rings of the phen ligands of two adjacent cations and by O—H...N hydrogen bonds, respectively, and also by π–π stacking interactions between phen and tcm units in (I).</p> </abstract>