Reaktionen an komplexgebundenen liganden : XXXIII. Synthese,reaktivität und struktur von eisen-carbonyl-komplexen mit vierzähnigen thioäther-thiolato-liganden |
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| Authors: | Dieter Sellmann Horst-Elmar Jonk Hans-Richard Pfeil Gottfried Huttner Joachim V Seyerl |
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| Institution: | Laboratorium für Anorganische und Analytische Chemie der GH Paderborn, Warburger Strasse 100, D-4790 Paderborn W-Germany;Lehrstuhl für Synthetische Anorganiche Chemie, Fachbereich Chemie der Universität Konstanz, D-7750 Konstanz W-Germany |
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| Abstract: | The reaction of the anion Fe(CO)2(S2C6H4)2]2? with 1,2-C2H4Br2 yields Fe(CO)2(dttd)] containing the dianion of the new tetradentate thioether-thiol ligand 2,3,8,9-dibenzo-1,4,7,10-tetrathiadecan (dttd-H2). Iron(II) salts coordinate CO under normal conditions also in the presence of alkyl mercaptides; the reaction of, e.g., Fe2+, 1,2-S2C2H42? and CO yields Fe(CO)2(S2C2H4)]2? which reacts with 1,2-C2H4Br2 analogously yielding Fe(CO)2(tdd)], (ttd = 1,4,7,10-tetrathiadecane]2?). As shown by X-ray analysis the iron centre in Fe(CO)2(ttd)] is coordinated pseudo-octahedrally by four sulfur atoms and two cis-carbonyl groups. Fe(CO)2(dttd)] splits off one CO ligand upon heating in THF yielding Fe(CO)(dttd)], which on reaction with PMe3 yields Fe(CO)(PMe3)(dttd)]. The new complexes are characterized by elemental analyses as well as by IR, 1H NMR and mass spectroscopy. |
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