Spectroscopic and crystallographic studies of adducts of aluminium trichloride with cyclic ketones, para-quinones and ortho-quinones

Abstract

Adducts of aluminium(III) chloride with 9-fluorenone, xanthenone and dibenzosuberenone have been characterised spectroscopically and by single crystal X-ray crystallography. These coloured pseudo-tetrahedral species, which are diamagnetic in both solid and solution states, serve as models for 1∶1 adducts of AlCl₃ with substituted p-quinones. These latter compounds undergo intramolecular one-electron transfer in non-aqueous solution, giving rise to paramagnetic species which have been characterised by electron spin resonance spectroscopy. The 1∶1 adducts of AlCl₃ with o-quinones show similar behaviour, although the solution chemistry reflects the differences between mono- and bi-dentate ligands.

References

1. (a) M. J. Taylor and P. J. Brothers, in The Chemistry of Aluminum, Gallium, Indium and Thallium, ed. A. J. Downs, Blackie, London, 1993, p. 111; (b) D. G. Tuck, ibid., p. 430.
2. M. A. Brown, B. R. McGarvey and D. G. Tuck, J. Chem. Soc., Dalton Trans., 1998, 3543.
3. M. A. Brown, B. R. McGarvey and D. G. Tuck, J. Chem Soc., Dalton Trans., 1998, 1371.
4. SMART, Data Collection Software, Version 4.050, Siemens Analytical X-Ray Instruments Inc., Madison, WI, 1996.
5. SAINT, Data Reduction Software, Version 4.050, Siemens Analytical X-Ray Instruments Inc., Madison, WI, 1996.
6. G. M. Sheldrick, SHELXTL 5.04/VMS, An integrated system for solving, rening and displaying crystal structures from diraction data, Siemens Analytical X-ray Instruments Inc., Madison, WI, 1995.
7. G. M. Sheldrick, SADABS, Empirical Absorption Correction Program, University of Göttingen, 1996.
8. C. J. Gilmore, MITHRIL, J. Appl. Crystallogr., 1984, 17, 42; P. T. Beurskens, DIRDIF, Technical report 1984/1, Crystallography Laboratory, Toernooiveld, Nijmegen, 1984.
9. D. T. Cromer and J. T. Waber, International Tables for X-Ray Crystallography, Kynoch Press, Birmingham, 1974, vol. 4, Table 2.2A.
10. J. H. Ibers and W. C. Hamilton, Acta Crystallogr., 1964, 17, 781.
11. D. T. Cromer, International Tables for X-Ray Crystallography, Kynoch Press, Birmingham, 1974, vol. 4, Table 2.3.1.
12. TEXSAN-TEXRAY, Structure Analysis Package, Molecular Structure Corporation, Houston, TX, 1985.
13. C. K. Johnson, ORTEP II, Report ORNL-5138, Oak Ridge National Laboratory, Oak Ridge, TN, 1976.
14. H. R. Luss and D. L. Smith, Acta Crystallogr., Sect. B, 1972, 28, 884.
15. M. Soderholm, U. Sonnerstam, R. Sonnerstram and T.-B. Palm, Acta Crystallogr., Sect. B, 1976, 32, 3013.
16. M. A. Brown and D. G. Tuck, unpublished results.
17. M. B. Power, S. G. Bott, D. L. Clark, J. L. Atwood and A. R. Barron, Organometallics, 1990, 9, 3086.
18. M. B. Power, S. G. Bott, D. L. Clark, J. L. Atwood and A. R. Barron, J. Am. Chem. Soc., 1990, 112, 3446.
19. D. G. Tuck, Coord. Chem. Rev., 1992, 112, 215.
20. G. A. Razuvaev, G. A. Abakumov and E. S. Klimov, Dokl. Akad. Nauk SSSR, 1971, 201, 624.
21. G. A. Abakumov and E. S. Klimov, Dokl. Akad. Nauk SSSR, 1972, 202, 827.
22. P. E. Barker, A. Hudson and R. A. Jackson, J. Organomet. Chem., 1981, 208, C1.
23. D. L. Boucher, M. A. Brown, B. R. McGarvey and D. G. Tuck, unpublished results.
24. M. A. Brown, B. R. McGarvey, A. Ozarowski and D. G. Tuck, Inorg. Chem., 1996, 35, 1560.