New synthetic routes to tris(pentaalkylcyclopentadienyl)lanthanide complexes including the X-ray crystal structure of (C5Me4Et)3Sm

Organometallics

Volumn 15, Issue 2, 1996, Pages 527-531

  Evans, William J ^a   Forrestal, Kevin J ^a   Leman, John T ^a   Ziller, Joseph W ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001220427     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om950779z     Document Type: Article

References (28)

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11. 8) can be recovered from the hexane extract and is a useful compound with a rich chemistry of its own: Evans, W. J.; Forrestal, K. J. Unpublished results.
12. The crystal was immersed in a lube-oil additive which allows for manipulation on the bench top and prevents decomposition due to air or moisture. The crystal was secured to a glass fiber (the oil acts as the adhesive), which is attached to an elongated brass mounting pin. Further details appear in: Hope, H. Experimental Organometallic Chemistry: A Practicum in Synthesis and Characterization; Wayda, A. L., Darensbourg, M. Y., Eds.; ACS Symposium Series No. 357; American Chemical Society: Washington, DC, 1987.
13. XSCANS Software Users Guide, Version 2.1; Siemens Industrial Automation, Inc.: Madison, WI, 1994.
14. SHELXTL Empirical Absorption Correction program (see ref 16).
15. UCLA Crystallographic Computing Package, University of California - Los Angeles, 1981 (C. Strouse, personal communication).
16. Sheldrick, G. M. Siemens Analytical X-Ray Instruments, Inc., Madison, WI, 1990 (SHELXTL program).
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23. Perrin, D. D. Dissociation Constants of Organic Bases in Aqueous Solution; Butterworths: London, 1965.
24. Ln(II) ionic radii in general, and Sm(II)-C(cyclopentadienyl) distances in particular, are typically 0.1 Å longer than their trivalent counterparts. See: Shannon, R. D. Acta Crystallogr. 1976, A32, 751-767. Evans, W. J.; Foster, S. E. J. Organomet. Chem. 1992, 433, 79-94.
25. Ln(II) ionic radii in general, and Sm(II)-C(cyclopentadienyl) distances in particular, are typically 0.1 Å longer than their trivalent counterparts. See: Shannon, R. D. Acta Crystallogr. 1976, A32, 751-767. Evans, W. J.; Foster, S. E. J. Organomet. Chem. 1992, 433, 79-94.
26. Evans, W. J.; Ulibarri, T. A. J. Am. Chem. Soc. 1987, 109, 4292-4297.
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28. Evans, W. J.; Keyer, R. A.; Ziller, J. W. Organometallics, 1993, 12, 2618-2633.