A second monoclinic polymorph of {bis­[5-methyl-3-(trifluoro­meth­yl)pyrazol-1-yl]borato}{tris­[5-methyl-3-(trifluoro­meth­yl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H⋯Co agostic interaction [Co(C10H10BF6N4)(C15H13BF9N6)]
2011

New Form of Cobalt(II) Complex with Agostic Interaction

publication Evidence: moderate

Author Information

Author(s): Stibrany Robert T., Potenza Joseph A.

Primary Institution: Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey

Conclusion

The study presents a new polymorph of a cobalt(II) complex that exhibits a unique agostic interaction.

Supporting Evidence

  • The new polymorph was formed through a ligand displacement reaction.
  • The cobalt(II) complex exhibits a distorted octahedral coordination geometry.
  • The study supports the existence of a B—H⋯Co agostic interaction.
  • Infrared spectral results indicate the presence of bound B—H groups.

Takeaway

Scientists discovered a new version of a cobalt compound that has a special bond with hydrogen, which helps it hold its shape.

Methodology

The compound was synthesized and characterized using X-ray crystallography.

Digital Object Identifier (DOI)

10.1107/S1600536811021994

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