| Autor: |
Mathivathanan L; Department of Chemistry and Biochemistry and the Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA and Department of Chemistry, GITAM Institute of Science, Gandhi Institute of Technology and Management (Deemed to be University), Visakhapatnam, AP 530045, India., Sanakis Y; Institute of Nanoscience and Nanotechnology, NCSR 'Demokritos', 15310 Aghia Paraskevi, Athens, Greece., Raptis RG; Department of Chemistry and Biochemistry and the Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA., Turek P; Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France. bountalis@unistra.fr., Boudalis AK; Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France. bountalis@unistra.fr and Institut de Science et d'Ingénierie Suparamolaiculaires - ISIS, 8 allée Gaspard Monge, BP 70028, F-67083 Strasbourg Cedex, France. |
| Abstrakt: |
A 16-line pattern has been theoretically predicted, but hitherto not reported, for the Electron Paramagnetic Resonance (EPR) spectrum of antiferromagnetically coupled CuII triangles experiencing isotropic exchange of isosceles magnetic symmetry. Now, the crystallization of such a triangular species and its X-ray structure determination in a polar space group, R3 (No. 146), has enabled its single crystal EPR study. Its detailed magnetic susceptibility, and X- and Q-band, powder and single crystal EPR spectroscopic study reveals the effect of molecular structure and of Dzyaloshinskii-Moriya interactions (DMI) on the g‖, g⊥ and A‖ parameters of the spectrum; DMI is considered for the first time in such a context. Moreover, careful analysis of the spectrum allows the deconvolution of two slightly different cocrystallized magnetic species. |
