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The use of DOSY experiments to determine the solution structures of coinage metal pyrazolates: The case of {[3,5-(CF3)2Pz]Ag}3 |
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| Authors: | Ibon Alkorta María Teresa Benito José Elguero Elisa García Doyagüez Monika R. Patterson María Luisa Jimeno H. V. Rasika Dias Felipe Reviriego |
| Affiliation: | 1. Instituto de Química Médica, CSIC, Madrid, Spain;2. Servicio de Resonancia Magnética Nuclear, Centro de Química Orgánica 'Lora-Tamayo', CSIC, Madrid, Spain;3. Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, USA;4. Instituto de Ciencia y Tecnología de Polímeros, CSIC, Madrid, Spain |
| Abstract: | A series of DOSY experiments have been carried out to determine the solution stoichiometry of silver(I) 3,5-bis (trifluoromethyl)pyrazolate species. This compound exists as a trimer in the solid state (n = 3) but in solutions of chlorinated solvents, the DOSY data suggest the presence of a mixture of solvent stabilized monomer (n = 1) and dimer (n = 2) in equilibrium. Different approximations have been used including the Stokes–Einstein and the Stokes–Einstein–Gierer–Wirtz equations. Some methodological problems are discussed. |
| Keywords: | DOSY fractal dimension SEGWE silver pyrazolates stoichiometry Stokes–Einstein |