Bis‐Triiodide von 1,2‐Ethandiaminkomplexen am Beispiel des Metalls Kupfer

In bis­(1,2‐ethanedi­amine‐N,N′)­bis­[tri­iodo(1?)‐I]copper, [Cu(I₃)₂­(C₂H₈N₂)₂], the triiodide anions form chains parallel to [001]. The central metal ion (site symmetry 2/m) of the complex cation is coordinated to four N atoms and to two I atoms. The geometry of the square‐bipyramidal complex is as expected, with d(Cu—N) = 2.006 (5) and d(Cu—I) = 3.3600 (9) Å.     

Suitability of Inexpensive Image-Generating Systems for Evaluation of Thin-Layer Chromatography and Gel Electrophoresis

JPC – Journal of Planar Chromatography – Modern TLC - Evaluation of TLC and gel-electrophoresis separations with cameras and image-analysis techniques has been widespread for several...     

Tetraiodide von Tris(1,2‐ethandiamin)komplexen der Metalle Zink und Nickel

The isotypic compounds tris(1,2‐ethanedi­amine‐N,N′)­zinc(II) triiodide iodide, [Zn(C₂H₈N₂)₃](I₃)I, and tris(1,2‐ethanedi­amine‐N,N′)­nickel(II) triiodide iodide, [Ni(C₂H₈N₂)₃](I₃)I, contain the octahedral [M(en)₃]²⁺ cation, with M = Zn and Ni, in both enantiomeric forms, an essentially linear triiodide anion and an iodide anion. The geometries of the complex ions are as expected, e.g.d(Ni—N) = 2.123 (5), 2.127 (6) and 2.134 (5) Å, and d(Zn—N) = 2.176 (4), 2.193 (4) and 2.210 (4) Å. The shortest contact between the triiodide and iodide ions is 3.979 (1) Å for the nickel compound and 4.013 (1) Å for the zinc compound.     

Isolierte I102−‐Ringe,ein neues Strukturelement in der Polyiodid‐Chemie

The novel compound bis(1,4,7,10‐tetraoxa­cyclo­do­decane)­cadmium(II) decaiodide, [Cd(C₈H₁₆O₄)₂]I₁₀, contains the [Cd(12‐crown‐4)₂]²⁺ complex cation, triiodide ions and iodine mol­ecules. Two triiodide ions and two iodine mol­ecules form isolated twisted I₁₀^2? rings. The geometry of the complex cation is as expected, e.g.d(Cd—O) = 2.366 (4) and 2.394 (4) Å.