Abstract
We report on the synthesis, crystal structure and magnetic properties of a previously unreported Co2+ compound, (C4H12N2)[CoCl4], based upon a tetrahedral crystalline environment. The magnetic ground state of Co2+, measured with magnetization, implies an absence of spin-orbit coupling and orbital degeneracy. This contrasts with compounds based upon an octahedral and even known tetrahedral Co2+ [Cotton et al. (1961). J. Am. Chem. Soc.83, 4690] systems where a sizable spin-orbit coupling is measured. The compound is characterized with single-crystal X-ray diffraction, magnetic susceptibility, IR and UV-vis spectroscopy. Magnetic susceptibility measurements find no magnetic ordering above 2K. The results are also compared with the previously known monoclinic hydrated analogue.
Original language | English |
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Pages (from-to) | 20-24 |
Number of pages | 5 |
Journal | Acta Crystallographica Section B - Structural Science |
Volume | 71 |
DOIs | |
Publication status | Published - Feb 2015 |
Keywords / Materials (for Non-textual outputs)
- orbital degeneracy
- magnetic properties
- FREE COBALTOUS COMPLEXES
- COBALT(II) COMPLEXES
- MAGNETIC INVESTIGATIONS
- SYMMETRY
- IONS