Cadmium (II) and mercury (II) complexes with mixed oxathiacrown ligands

CHED 1183

Jared Hassler, jared-hassler@utc.edu, Department of Chemistry, University of Tennessee at Chattanooga, Department 2252, 615 McCallie Ave., Chattanooga, TN 37403, Gregory J. Grant, Greg-Grant@utc.edu, Department of Chemistry, University of TN at Chattanooga, Chattanooga, TN 37403, and Daron E. Janzen, Daron-Janzen@utc.edu, Chemistry Department, University of Tennessee at Chattanooga, 615 McCallie Avenue, Chattanooga, TN 37403.
Two mixed oxathiacrown ligands, 1-oxa-4,7-dithiacyclononane (9S2O) and 1,10-dioxa-4,7,13,16-tetrathiacyclooctadecane (18S4O2), were synthesized via a cesium carbonate cyclization reaction. The ligands were then complexed with hydrated perchlorate salts of Hg(II) and Cd(II). The isolated complexes have the general formula of [X(9S2O)2](ClO4)2 and [X(18S4O2)](ClO4)2 (X = Cd or Hg). The structure of the [Cd(9S2O)2](ClO4)2 complex has been solved by X-ray diffraction and shows the two 9S2O ligands bound to the metal as a cis isomer. This is in contrast to the information presented by multinuclear NMR spectroscopy, which suggests the ligands are bound to the metal in a trans fashion.
 

Undergraduate Research Poster Session: Inorganic Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster

Division of Chemical Education

The 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007