A pyrazolate-supported Fe(3)(mu(3)-O) core: structural, spectroscopic, electrochemical, and magnetic study |
| |
| Authors: | Piñero Dalice Baran Peter Boca Roman Herchel Radovan Klein Michael Raptis Raphael G Renz Franz Sanakis Yiannis |
| |
| Affiliation: | Department of Chemistry and the Institute of Functional Nanomaterials, University of Puerto Rico, San Juan, PR, Puerto Rico. |
| |
| Abstract: | A comparison is made between the structural, spectroscopic, electrochemical, and magnetic properties of pyrazolate versus carboxylate complexes [Fe3(mu3(mu3O)(mu-LL)6Cl3]2- containing the Fe3(mu3-O)-motif. While the Fe3(mu3-O)-cores are structurally indistinguishable in the two types of complexes, their magnetic properties deviate from the expected values as a result of a through-pyrazole contribution to the overall antiferromagnetic exchange with J1/hc = -80.1 cm(-1) and J2/hc = -72.4 cm(-1), or J1/hc = 70.6 cm(-1) and J2/hc = -80.8 cm(-1), (Hex = -J1(S1S2 + S2S3) - J2S1S3). The magnetic properties of the pyrazolate complexes are further tuned by an antisymmetric exchange interaction term. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
