Intercalation of an octanuclear iron pyrazolate using zirconium phosphate layered materials

CHED 1180

Verónica Díaz, vdiazrodz@gmail.com1, Indranil Chakraborty, indranilc74@gmail.com2, Agustín Díaz, agustin143pr@gmail.com1, Jorge L. Colón, jorgecr@caribe.net3, and Raphael G. Raptis, raphael@adam.uprr.pr4. (1) Department of Chemistry, University of Puerto Rico-Río Piedras Campus, San Juan, PR 00931, (2) Department of Chemistry, University of Puerto Rico, Ponce de Leon Avenue, San Juan, PR 00931, (3) Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, P.O. Box 23346, San Juan, PR 00931, (4) Department of Chemistry, University of Puerto Rico - Rio Piedras, P.O.Box 23346, San Juan, PR 00931-3346
Inorganic layered materials are of considerable research interest due to their ability to serve as ion exchangers, solid-state ion conductors, catalysts and biocatalysts. We are interested in the use of layered zirconium phosphate (ZrP) as host for iron clusters. We have synthesized a series of octanuclear iron clusters of general formula [Fe8O4(4-R-pz)12Cl4] (pz = pyrazolate; R = H, Cl, Br, I, Me). These complexes exhibit interesting spectral and electrochemical features and also have the potential to be used as MRI contrast agents. One disadvantage of these iron clusters are their lack of solubility in aqueous solution. The ZrP intercalated products can be suspended in water solution in order to study their behavior in an aqueous environment. Here we will present the formation of octanuclear iron pyrazolate-ZrP intercalated materials and their structural and spectroscopic characteristics. These products were characterized by X-ray powder diffraction, UV-vis spectrophotometry, and FTIR and X-ray photoelectron spectroscopies. In addition, electrochemical studies of the intercalated product will be presented.
 

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