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Expanding Bismuth Trihalide Coordination Chemistry with Trimethyltriazacyclohexane and Trimethyltriazacyclononane
Justin C Wedal1, Joseph W Ziller1, William J Evans1
1Department of Chemistry, University of California Irvine, Irvine, California 92697, United States.
Abstract:
1,3,5-Trimethyltriazacyclohexane, Me3tach, readily adds to bismuth triiodide to form a variety of new coordination compounds depending on the stoichiometry, solvent, and crystallization conditions. X-ray crystallographic evidence has been obtained for both 2:1 and 1:1 Me3tach:Bi complexes with formulas of [(Me3tach)2BiI2][(Me3tach)BiI4], [(Me3tach)2BiI2]3[Bi2I9][I][HMe3tach]·THF, and (Me3tach)BiI3(py)2. The related chloride structure (Me3tach)BiCl3(py)2 forms from BiCl3. The structure of (Me3tacn)BiI3 with the larger chelate, 1,4,7-trimethyltriazacyclononane, Me3tacn, was obtained for comparison, and the polymeric structure of BiI3 in THF was defined as [BiI(THF)(μ-I)2].
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