Synthesis and characterisation of hexaruthenium carbido carbonyl clusters containing arenes derived from biphenyl

Abstract

Several hexaruthenium carbido clusters [Ru₆C(CO)₁₄(η⁶-C₆H₅C₆H₄Me)] 1a, [Ru₆C(CO)₁₄(η⁶-MeC₆H₄C₆H₅)] 1b, [Ru₆C(CO)₁₄(η⁶-C₆H₅C₆H₄Et)] 2a, [Ru₆C(CO)₁₄(η⁶-EtC₆H₄C₆H₅)] 2b, [Ru₆C(CO)₁₄(η⁶-C₆H₅C₆H₄Ph)] 3 and [Ru₆C(CO)₁₄(η⁶-C₆H₅C₆H₃Ph₂)] 4 have been synthesized by the reaction of triruthenium dodecacarbonyl and the appropriate polycyclic hydrocarbon. The compounds have been fully characterised by a variety of methods including single-crystal X-ray diffraction for 1a, 1b and 2b. The supramolecular architectures of these three solid-state structures have also been examined. Selectivity of the cluster build-up reaction at different aryl sites is discussed.

References

1. A. J. Blake, P. J. Dyson, B. F. G. Johnson, D. Reed and D. S. Shephard, J. Chem. Soc., Dalton Trans., 1995, 843.
2. B. F. G. Johnson, R. D. Johnson, J. Lewis and B. H. Robinson, J. Chem. Soc., 1968, 2856.
3. D. Braga, P. J. Dyson, F. Grepioni, B. F. G. Johnson and M. J. Calhorda, Inorg. Chem., 1994, 33, 3218.
4. D. Braga, P. J. Dyson, F. Grepioni and B. F. G. Johnson, Chem. Rev., 1994, 94, 1585 and refs. therein.
5. C. A. Hunter, Chem. Soc. Rev., 1994, 101.
6. T. Borchert, J. Lewis, H. Pritzkow, P. R. Raithby and H. Wadepohl, J. Chem. Soc., Dalton Trans., 1995, 1061.
7. J. N. Nicholls, M. D. Vargas, J. Hriljac and M. Sailor, Inorg. Synth., 1989, 28, 280.
8. J. Cosier and A. M. Glazer, J. Appl. Crystallogr., 1986, 19, 105.
9. G. M. Sheldrick, SHELXTL PLUS, Siemens Analytical Instruments, Madison, WI, 1990.