Inorganic Chemistry
Communication
Bart, S. C.; Milsmann, C.; Stieber, S. C. E.; Semproni, S. P.; DeBeer, S.;
Scheme 2. Proposed Mechanism for the Formation of 2 from
Heating Solutions of 1
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cleavage of benzophenone azine with a cobalt(I) complex has
25
been reported previously. In order to test step c independently,
tBu
we added benzophenone azine to 2 mol equiv of isolated L Co
4
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under argon in C D at 80 °C for 85 min, which gave 2 in 82%
6
12
1
yield, as judged by H NMR spectroscopy with an internal
integration standard. Thus, step c is also kinetically competent to
be part of the mechanism in Scheme 2 for forming 2 from 1.
Overall, this proposed mechanism is reasonable because it
consists of experimentally verified steps.
(
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2
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ASSOCIATED CONTENT
Supporting Information
■
X. P. Angew. Chem., Int. Ed. 2013, 52, 11857−11861.
11) Ding, K.; Pierpont, A. W.; Brennessel, W. W.; Lukat-Rodgers, G.;
Rodgers, K. R.; Cundari, T. R.; Bill, E.; Holland, P. L. J. Am. Chem. Soc.
009, 131, 9471−9472.
12) Dugan, T. R.; Sun, X.; Rybak-Akimova, E. V.; Olatunji-Ojo, O.;
*
S
(
Experimental procedures, spectroscopic data, and X-ray
2
(
Cundari, T. R.; Holland, P. L. J. Am. Chem. Soc. 2011, 133, 12418−
1
4
2421.
AUTHOR INFORMATION
(13) Dai, X.; Kapoor, P.; Warren, T. H. J. Am. Chem. Soc. 2004, 126,
798−4799.
14) Ding, K.; Dugan, T. R.; Brennessel, W. W.; Bill, E.; Holland, P. L.
■
(
*
Organometallics 2009, 28, 6650−6656.
Notes
(15) (a) Holland, P. L.; Cundari, T. R.; Perez, L. L.; Eckert, N. A.;
The authors declare no competing financial interest.
Lachicotte, R. J. J. Am. Chem. Soc. 2002, 124, 14416−14424. (b) Ding,
K.; Brennessel, W. W.; Holland, P. L. J. Am. Chem. Soc. 2009, 131,
10804−10805. (c) Dugan, T. R.; Goldberg, J. M.; Brennessel, W. W.;
Holland, P. L. Organometallics 2012, 31, 1349−1360.
ACKNOWLEDGMENTS
■
The authors thank Thomas Cundari and Daniel DeRosha for
helpful discussions and David Vinyard for collecting the EPR
data. Funding was provided by the American Australian
Association (to S.J.B.) and the U.S. Department of Energy,
Office of Basic Energy Sciences, through Grant DE-FG02-
(
1
(
2
16) Cambridge Structural Database software: ConQuest, version
.17; February 2015. See the SI for details of the search parameters.
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1, 4264−4274. (b) Małecki, J. G.; Gryca, I.; Penkala, M. Polyhedron
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013, 51, 102−110. (c) Herbert, D. E.; Lara, N. C.; Agapie, T. Chem.
0
9ER16089 (to P.L.H.). Analytical data were from the CENTC
Eur. J. 2013, 19, 16453−16460.
Elemental Analysis Facility at the University of Rochester,
funded by the NSF (Grant CHE-0650456). This work was
supported in part by the facilities and staff of the Yale High
Performance Computing Center, which was partially funded by
the NSF (Grant CNS 08-21132).
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