Novel polymeric magnets based on copper(II) halides and pyrazine ligands
Dr. Jamie L. Manson,
Department of Chemistry and Biochemistry,
Eastern Washington University
The design and solution synthesis of molecule-based magnetic materials
composed of polymeric structures is an area of intense interdisciplinary
research. Many such examples consist of bridging molecules such as
pyrazine (pyz), i.e. N2C4H4, which
has lead to structures of all dimensionalities. The majority of
known pyz-based compounds contain Cu2+ cations and various
anions such as ClO4-,
BF4-, PF6-, among others.
Based on the propensity for pyz to coordinate to paramagnetic metal
ions, we chose to extend these studies to include halides
(F-, Cl-, Br-), bifluoride
(HF2-), and pseudo-halides (e.g. dicyanamide).
Our efforts have led to the formation of several novel structures
of which hydrogen bond interactions play an important role in
the observed magnetic behavior including LRO. Complimentary bulk
and microscopic studies have made use of magnetic susceptibility
and muon spin relaxation (μ+SR) techniques
respectively. The results of our recent endeavors will be presented.
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