Date of Award
Master of Science in Chemistry
College of Sciences and Health Professions
Chemistry, Inorganic Chemistry
Ammonium tetrathiomolybdate (ATTM) is an important compound in bioinorganic chemistry, with medicinal applications. Metal complexes of sulfur-containing ligands have been widely used as building block in biology and inorganic chemistry. This project aims to increase the number of Mo-S and W-S complexes that may contribute to fields such as bioinorganic and medicinal chemistry, by the preparation of heterometallic complexes containing both Mo or S and a metal of the first transition series. The homobimetallic complex anion salts (Et4N)2[Mo2(S)2(μ-S)2(edt)2] (1) and (Et4N)2[W2(S)2(μ-S)2(edt)2] (2) have been prepared from ATTM and ammonium tetrathiotungstate (ATTW) in order to start our work. The overnight treatment of 1 and 2 with MCl2, ( M = Fe, Co, Ni, Cu) under nitrogen at elevated temperatures (84 ˚C) is hypothesized to yield trinuclear cluster anion salts. UV-visible spectra for reaction products 3-6 showed significantly different λmax values compared with starting materials. FTIR spectra were obtained for compounds 1 and 2 for comparison with products 3-6. While the spectra showed clear evidence of transformation from 1 or 2, the structures of the products could not yet be confirmed, as attempts to obtain crystals suitable for single-crystal X-ray diffraction have so far been unsuccessful. Our future goals are to determine the structures of these reaction products, and examine their potential for medicinal and catalytic applications.
Mudarmah, Khalil, "Reactivity of Molybdenum and Tungsten Sulfido Complexes with First-Series Transition Metals" (2019). ETD Archive. 1130.