Spectral and magnetic properties of copper(II) furoate and copper(II) thiophene-2-carboxylate |
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Authors: | HW Richardson JR Wasson WE Hatfield |
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Institution: | Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27514 U.S.A. |
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Abstract: | Anhydrous copper(II) furoate and copper(II) thiophene-2-carboxylate have been Synthesized. They are formulated as dimeric species with four carboxylate bridges. The thiophene and furan moieties give rise to polymeric structures. Electron spin resonance spectra and magnetic susceptibility measurements show that the dimers have a singlet ground state and a thermally populated triplet state. The exchange coupling constants, 2J, are ?322 and ?312 cm?1 for the furoate and thiophene-2-carboxylate complexes, respectively. The electronic and infrared spectra are also discussed. |
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