217321-54-5Relevant articles and documents
Coordinatively unsaturated iron chalcogenolate complexes with trigonal planar ligand spheres - Synthesis, properties, and reactions with nitrogen and oxygen donor molecules
Hauptmann, Ralf,Kli?, Rainer,Schneider, J?rg,Henkel, Gerald
, p. 1927 - 1936 (2008/10/09)
The new bulky organo-selenium compound 2,4,6-triphenylbenzeneselenole (1A) was synthesized by a multistep-reaction from 1,3,5-triphenylbenzene. 1A was converted by oxidation into the air-stable bis(2,4,6-triphenylphenyl)diselenide (1B), which was characterized by X-ray diffraction. The stepwise reaction of [Fe2{N(SiMe3)2}4] with 1A leads to the complexes [Fe2(SeC6H2-2,4,6-Ph3) 2{N(SiMe3)2}2] (2) and [Fe2(SeC6H2-2,4,6-Ph3)4] (3), controlled by their molar ratios. The conversion of 2 to 3 is also described. In addition, the coordinatively unsaturated thiolate complexes [Fe2{(SC6H3-2,6-(SiMe3) 2}2{N(SiMe3)2}2] (4) and [Fe2{(SC6H3-2,6-(SiMe3) 2}4] (5) were synthesized by stepwise reaction of [Fe2{N(SiMe3)2}4] with 2,6-bis(trimethylsilyl)benzenethiole. It is also possible to convert the heteroleptic compound 4 into the homoleptic thiolate complex 5. During our investigations of the reactivity of 5 towards small electroneutral molecules, the compounds [Fe2{SC6H3-2,6-(SiMe3) 2}4 · (MeCN)2] (6) and [Fe{SC6H3-2,6-(SiMe3)2} 2(OPEt3)] (7) were obtained. 6 is the product of the addition of two molecules of acetonitrile to 5. The iron atoms of 6 are coordinated by three sulfur and one nitrogen atom in a distorted tetrahedral manner. When 5 is treated with triethylphosphine oxide instead of acetonitrile, the mononuclear complex 7 with the coordination number three is formed. The iron atom is surrounded by two sulfur and one oxygen donor functions.
