Chemical Science
Edge Article
openness of 2 is evidenced by the capacity of the suldo
M. Insausti, L. Lezama, P. Vitoria, M. R. Pedrosa and
J. Garc ´ı a-Tojal, Eur. J. Inorg. Chem., 2010, 4513–4525.
+
ligand to accommodate another (IPr)Cu unit, in the cluster
+
2a
[
{(IPr)Cu} (m -S)] . Despite the steric protection afforded
5 Selected reports of Cu–S clusters: (a) E. C. Brown, J. T. York,
W. E. Antholine, E. Ruiz, S. Alvarez and W. B. Tolman, J. Am.
Chem. Soc., 2005, 127, 13752–13753; (b) L. Yang, J. Tehranchi
and W. B. Tolman, Inorg. Chem., 2011, 50, 2606–2612; (c)
E. C. Brown, N. W. Aboelella, A. M. Reynolds, G. Aull ´o n,
S. Alvarez and W. B. Tolman, Inorg. Chem., 2004, 43, 3335–
3337; (d) E. C. Brown, I. Bar-Nahum, J. T. York,
N. W. Aboelella and W. B. Tolman, Inorg. Chem., 2007, 46,
3
3
by the IPr* ligands of 1, it reacts with haloalkanes with
resulting formation of C–S bonds.
2
The demonstration that the Cu (m-S) reactive core can be
stabilized by ligands of suitable steric bulk suggests that other
clusters of this class can be prepared with comparably sized
NHC by the routes described here, and possibly with other
bulky supporting ligands.
486–496; (e) J. T. York, I. Bar-Nahum and W. B. Tolman,
Inorg. Chem., 2007, 46, 8105–8107; (f) L. Yang, Z. Wang,
D. R. Powell and R. P. Houser, Dalton Trans., 2009, 4439–
4441; (g) P. Betz, B. Krebs and G. Henkel, Angew. Chem.,
Int. Ed., 1984, 23, 311–312; (h) X.-X. Yang, I. Issac,
S. Lebedkin, M. K u¨ hn, F. Weigend, D. Fenske, O. Fuhr and
A. Eichhofer, Chem. Commun., 2014, 50, 11043–11045; (i)
Y. Lee, A. A. N. Sarjeant and K. D. Karlin, Chem. Commun.,
Acknowledgements
This paper is dedicated to the memory of Greg Hillhouse, who
was a great mentor (J.Z.) and colleague (M.D.H.) and is deeply
missed. This work was supported by the National Science
Foundation through grant CHE-1266281.
2
006, 621–623; (j) H.-X. Li, W. Zhao, H.-Y. Li, Z.-L. Xu,
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I
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3
n n
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