Imidazolium Salts with Heterometallic Complex Anions [Co2Li2(Piv)8]2–: Synthesis, Structures, and Magnetic Properties.

Authors :: Rubtsova, I. K.
Vasilyev, P. N.
Voronina, J. K.
Shmelev, M. A.
Efimov, N. N.
Nikolaevskii, S. A.
Eremenko, I. L.
Kiskin, M. A.
Source :: Russian Journal of Coordination Chemistry; Jul2024, Vol. 50 Issue 7, p523-533, 11p
Publication Year :: 2024
Abstract: Imidazolium salts with complex anions [Co<subscript>2</subscript>Li<subscript>2</subscript>(Piv)<subscript>8</subscript>]<superscript>2–</superscript> are formed as undesirable products of the reactions of heterometallic compound [Co<subscript>2</subscript>Li<subscript>2</subscript>(Piv)<subscript>6</subscript>(Py)<subscript>2</subscript>] with N-heterocyclic carbenes ItBu and IPr. The study of the magnetic properties of complex (HItBu)<subscript>2</subscript>[Co<subscript>2</subscript>Li<subscript>2</subscript>(µ<superscript>2</superscript>-Piv)<subscript>6</subscript>(κ<superscript>1</superscript>-Piv)<subscript>2</subscript>] shows that this compound is a single molecule magnet. Slow magnetic relaxation in the complex occurs due to a combination of the direct and Raman mechanisms. [ABSTRACT FROM AUTHOR]

Subjects :: SINGLE molecule magnets
MAGNETIC properties
MAGNETIC relaxation
MOLECULAR structure
CARBENES

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