Chemistry Journal of Moldova

NEW HOMOMETALLIC OCTANUCLEAR CHROMIUM(III) RINGS

Author(s):

Grigore Timco, Robin Pritchard, George Whitehead, Richard Winpenny


Field: Inorganic and coordination chemistry
Type: Invited paper
Issue: 2022 Volume 17, no.1
Pages: 9-17
Keywords:

chromium, carboxylate, polymetallic ring, crystallography.


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Abstract (PDF)
Graphical Abstract: Four new {Cr8} rings have been synthesized and characterized; they are all based on the classic [CrF(O2CtBu)2]8 ring 1. Three routes have been studied. The first is direct synthesis, by reacting hydrated chromium(III) fluorides with the acid; this has been used to produce  [CrF(O2CEt)2]8 3. The second route uses 3 as a precursor and substitute with an incoming carboxylate. This has been used to make [CrF(O2CCCl3)2]8 4 and [CrF(O2CC6F5)2]8 5. The third route uses 
N-ethyl-D-glucamine (H5Etglu) as a template and produces chiral rings [Cr8F4(Etglu)(O2CtBu)15] 6. The single crystal X-ray structures of these new compounds are reported.


 


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