A cyanide-containing cobalt(III) complex [Co(phen)2(CN)2][Co(phen)(CN)4]·4.5H2O: hydrothermal synthesis, crystal structure and spectroscopic properties

Abstract

A cyanide-containing cobalt(III) complex, [Co(phen)2(CN)2][Co(phen)(CN)4] · 4.5H2O (1: phen = 1,10-phenanthroline) has been synthesized by hydrothermal techniques and characterized by elemental analyses, IR spectroscopy, UV–vis spectroscopy and single-crystal X-ray diffraction methods. The complex is triclinic, space group P 1 , with a = 11.0047(16), b = 12.9587(19), c = 15.076(2) Å, α = 100.060(2), β = 102.061(2), γ = 91.803(2)°, V = 2065.0(5) Å3, Z = 2, and R 1 [I > 2σ(I)] = 0.0481. The molecular unit of 1 consists of a cation/anion pair with interstitial water molecules in the crystal lattice. The combination of coordinative, hydrogen bonding and π–π stacking interactions results in the stabilization of a supramolecular solid-state architecture.