Inorganic Chemistry
Communication
presence of a carba-closo-dodecaborate ligand substituent allows
the polymerization of norbornene even though the anion is
buried in the coordination sphere of the metal. This highlights
the extraordinary weak coordinative ability of these R groups and
paves the way for the development of other systems that will be
effective for the polymerization of unstrained olefins. We are
currently investigating the design of related Pd−Me catalysts,
which should display enhanced initiation relative to the allyl
system 7.
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ASSOCIATED CONTENT
Supporting Information
Experimental procedures, spectroscopic data, and X-ray
■
(
7) (a) El-Hellani, A.; Lavallo, V. Angew. Chem., Int. Ed. 2014, 53, 4489.
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S
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AUTHOR INFORMATION
Author Contributions
The manuscript was written through contributions of all authors.
All authors have given approval to the final version of the
manuscript. These authors contributed equally.
(
c) Drent, E.; van Dijk, R.; van Ginkel, R.; van Oort, B.; Pugh, R. I. Chem.
Commun. 2002, 964. (d) Ito, S.; Ota, Y.; Nozaki, K. Daltons Trans. 2012,
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*
4
(
1
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Notes
The authors declare no competing financial interest.
8
2
706. (l) Vela, J.; Lief, G. R.; Shen, Z.; Jordan, R. F. Organometallics
007, 26, 6624. (m) Luo, S.; Vela, J.; Lief, G. R.; Jordan, R. F. J. Am.
ACKNOWLEDGMENTS
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Chem. Soc. 2007, 129, 8946.
This material is based on work supported by the NSF (Grant
CHE-1455348) and ACS PRF (52255-DNI3). J.E. was
supported by the U.S. Department of Education GAANN
Award P200A120170.
(9) Kim, Y.; Jordan, R. F. Organometallics 2011, 30, 4250.
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