Fluoro-containing complexes of chromium(III). III. The synthesis and characterization of some fluoroacidobis(ethylenediamine)chromium(III) complexes

Abstract

A series of five new rnonofluoro complexes of chromium(II1) of the type [Cr(en)zFX] pared and characterized. arrangement of the F X ligands.the F X ligands trans to each other.techniques, and in one case by the resolution of a complex into its optical antipodes.(en is ethylenediamine) has been pre-The complexes which contain C1-, Br-, I-, or NCSas the X-group all appear to involve a cis However, those complexes which contain 0x0or Fas the X -groups appear to have Structures were established via ultraviolet-visible spectral studies, by ion-exchange In addition, new synthetic methods are presented for some known complexes of chromium(II1).

Metallosurfactants of Chromium(III) Coordination Complexes. Synthesis, Characterization and Determination of CMC Values

“…The purity of the complexes was checked by chromium [25], elemental and halide analyses, and was found to be in good agreement with that of the calculated value ( Table 1).…”

“…The surfactant chromium(III) complexes synthesized here, were prepared in a similar way to those complexes reported in the literature [25][26][27][28], by replacing the onehalogen ion by long-chain amine ligands as follows. .…”

“…The semi-dried solid was further dried in a drying pistol over fused CaCl 2 and stored in a vacuum desiccator. The same procedure was followed for the cis-[Cr(en) 2 (C 16 [25,26] by adopting the same method as described above.…”

Synthesis, structure, CMC values, thermodynamics of micellization, steady-state photolysis and biological activities of hexadecylamine cobalt(III) dimethyl glyoximato complexes

“…The spectra were compared with those reported earlier for similar types of complexes [3,4]. The purity of the complexes was checked by cobalt [23], nitrogen and halide analyses, which were in good agreement with the calculated values (Table 1). …”

Mutual Influences of Ligands as Revealed by 2H NMR Shifts and the Angular Overlap Model Parameters: trans‐ and cis‐[CrX2(N)4]‐Type Complexes with Aliphatic Amine Ligands

“…[7] (1.0 g) was stirred with 5 mL of perchloric acid (70 %) at 30°C overnight. [32] The resultant orange crystals were filtered, then washed with acetone and diethyl ether and dried in air. Yield: 2 (0.76 g) was dissolved in 10 mL of DMSO.…”