Structural variations in dicopper(I) double helicate complexes

Abstract

The helical dimers [{Cu(µ-L^R)}₂]²⁺ exhibit three different solid state structures when R = H, Mes or ^tBu; the latter complex, which is a unique example of a {3+3} double helicate, retains this structure in solution.

References

1. C. Piguet, G. Bernardinelli and G. Hopfgartner, Chem. Rev., 1997, 97, 2005.
2. K. T. Potts, M. Kesharvaz-K, F. S. Tham, H. D. Abruña and C. Arana, Inorg. Chem., 1993, 32, 4450; E. C. Constable, A. J. Edwards, M. J. Hannon and P. R. Raithby, J. Chem. Soc., Chem. Commun., 1994, 1991.
3. E. C. Constable, T. Kulke, M. Neuberger and M. Zehnder, Chem. Commun., 1997, 489.
4. C. Piguet, G. Bernardinelli and A. F. Williams, Inorg. Chem., 1989, 28, 2920; R. F. Carina, G. Bernardinelli and A. F. Williams, Angew. Chem., Int. Ed. Engl., 1993, 32, 1463.
5. S. Rüttiman, C. Piguet, G. Bernardinelli, B. Bocquet and A. F. Williams, J. Am. Chem. Soc., 1992, 114, 4230; R. F. Carina, A. F. Williams and C. Piguet, Helv. Chim. Acta, 1998, 81, 548.
6. J. L. Coyle, V. McKie and J. Nelson, Chem. Commun., 1998, 709.
7. D. L. Jameson and K. A. Goldsby, J. Org. Chem., 1990, 55, 4992.
8. N. K. Solanki, E. J. L. McInnes, F. E. Mabbs, S. Radojevic, M. McPartlin, N. Feeder, J. E. Davies and M. A. Halcrow, Angew. Chem., Int. Ed., 1998, 37, 2221.
9. M. A. Halcrow, N. L. Cromhout and P. R. Raithby, Polyhedron, 1997, 16, 4257.
10. R. Cramer and J. J. Mrowca, Inorg. Chim. Acta, 1971, 5, 528.
11. S. Trofimenko, Chem. Rev., 1993, 93, 943.
12. C. Mealli, C. S. Arcus, J. L. Wilkinson, T. J. Marks and J. A. Ibers, J. Am. Chem. Soc., 1976, 98, 711; S. M. Carrier, C. E. Ruggiero, R. P. Houser and W. B. Tolman, Inorg. Chem., 1993, 32, 4889.