175885-11-7Relevant academic research and scientific papers
Neutral Four-Coordinate (Thiolato)- And (Selenolato)iron(II) Complexes: Synthesis and Characterization of Fe(E-2,6-i-Pr2C6H3)2(1-MeIm) 2 (E = S, Se; 1-MeIm = 1-Methylimidazole). Potential Models for a Biological, Mononuclear N2S2 Binding Site for Iron?
Forde, Cameron E.,Lough, Alan J.,Morris, Robert H.,Ramachandran, Ravindranath
, p. 2747 - 2751 (2008/10/09)
The complexes Fe(E-2,6-i-Pr2C6H3)2(1-MeIm) 2 (1, E = S; 2, E = Se; 1-MeIm = 1-methylimidazole) are prepared by metathesis of chloride for 2,6-diisopropylbenzenethiolate or -selenolate from iron(II) chloride in the presence of 2 equiv of 1-methylimidazole. The complexes are very pale yellow (1) or pale orange (2), are oxygen sensitive, and have magnetic moments determined in solution at room temperature to be 4.6 μB for both. The proton NMR spectra were completely assigned using line width and integration information and a deuterium labeling study using 1-methylimidazole-2,4,5-d3 and 1-methylimidazole-2-d prepared by hydrothermal deuterium exchange reactions. Cyclic voltammetry studies of these compounds reveal complex irreversible oxidation behavior. Single-crystal Xray diffraction studies for 1 at 296 K and for 2 at 173 K revealed distorted tetrahedral coordination geometries for both complexes. Complex 1 crystallizes in the monoclinic space group P21/c with a = 12.772(3) A, b = 15.450(3) A, c = 18.303(4) A, β= 108.66(3)°, Z = 4, V = 3421.8(13) A3, dcalc = 1.178 g cm-3, R = 0.0499, and Rw = 0.0523. Complex 2 crystallizes in the monoclinic space group P21/n with a = 9.267(2) A, b = 23.372(5) A, c = 15.838(2) A, β= 99.70(1)°, Z = 4, V = 3381.3(11) A3, dcalc = 1.376 g cm-3, R = 0.0429, and Rw = 0.0739.
