Syntheses and structural characterization of quaternary lanthanide thiogallates

CHED 1228

Paul M. Vogel, pmv401@jaguar1.usouthal.edu, Rylee K. Burt, rkb403@jaguar1.usouthal.edu, Branson A. Maynard, bam306@jaguar1.usouthal.edu, and Richard E. Sykora, rsykora@jaguar1.usouthal.edu. Department of Chemistry, University of South Alabama, Chemistry Building, Room 223, Mobile, AL 36688
In this poster we present an exploration into the syntheses of f-block thiogallates. The thiogallates we are trying to produce are quaternary compounds consisting of an alkali metal, gallium, sulfur, and a lanthanide. The technique used to synthesize these compounds uses a molten flux to promote the reactions. The alkali metal/sulfur fluxes are synthesized in separate reactions using a metal ammonia solution and a stoichiometric ratio of alkali metal and sulfur. The thiogallates reactions are carried out in quartz tubes between 550 °C to 750 °C and anywhere from 4 to 18 days. In multiple reactions we have isolated single homogeneous compounds and in some reactions single crystals have been formed. Single crystal X-ray diffraction is used to analyze the crystals produced. Some of the prepared lanthanide thiogallates will be discussed.
 

Undergraduate Research Poster Session: Inorganic Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster

Division of Chemical Education

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008