Triatomic EP2 triangles (E = Ge, Sn, Pb) as μ2: η3,η3-bridging ligands

Angewandte Chemie - International Edition

Volumn 44, Issue 29, 2005, Pages 4592-4596

  Figueroa, Joshua S ^a   Cummins, Christopher C ^a  

^a MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

Aromaticity; Bridging ligands; Main group elements; Niobium; Phosphorus

Indexed keywords

COMPLEXATION; DERIVATIVES; GERMANIUM COMPOUNDS; LEAD COMPOUNDS; NEGATIVE IONS; SODIUM COMPOUNDS; TIN COMPOUNDS;

CYCLOPROPENIUM; ELECTRON THREE-MEMBERED RINGS; PHOSPHIDE ANIONS; TRIATOMIC TRIANGLES;

ORGANOMETALLICS;

EID: 22744448211     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200500707     Document Type: Article

References (45)

1. P. J. Garratt, Aromaticity, Wiley, New York, 1986, p. 137.
2. a) R. Breslow, J. T. Groves, G. Ryan, J. Am. Chem. Soc. 1967, 89, 5048;
3. b) G. Farnum, G. Mehta, R. S. Silberman, J. Am. Chem. Soc. 1967, 89, 5049;
4. c) R. Breslow, J. T. Groves, J. Am. Chem. Soc. 1970, 92, 984.
5. For example, see: a) M. W. Wong, L. Radom, J. Am. Chem. Soc. 1989, 111, 6976;
6. b) Y.-G. Byun, S. Seabo, C. U. Pittman, Jr., J. Am. Chem. Soc. 1991, 113, 3689;
7. c) J. R. Flores, A. Largo, J. Phys. Chem. 1992, 96, 3015;
8. d) W. W. Schoeller, U. Tubbesing, THEOCHEM 1995, 343, 49;
9. e) Y. Xie, P. R. Schreiner, H. F. Schaefer, X.-W. Li, G. H. Robinson, J. Am. Chem. Soc. 1996, 118, 10635;
10. f) W. Eisfeld, M. Regitz, J. Org. Chem. 1998, 63, 2814;
11. g) Y. Xie, P. R. Schreiner, H. F. Schaefer, X.-W. Li, Robinson, G. H. Organometallics 1998, 17, 114;
12. h) R. Salcedo, C. Olvera, THEOCHEM 1999, 460, 221.
13. 2}: J. J. Eisch, B. Shafii, A. L. Rheingold, J. Am. Chem. Soc. 1987, 109, 2526;
14. J. J. Eisch, B. Shafii, J. D. Odom, A. L. Rheingold, J. Am. Chem. Soc. 1990, 112, 1847;
15. +: K. K. Laali, B. Geissler, O. Wagner, J. Hoffmann, R. Armbrust, W. Eisfeld, M. Regitz, J. Am. Chem. Soc. 1994, 116, 9407;
16. 2-: X.-W. Li, W. T. Pennington, G. H. Robinson, J. Am. Chem. Soc. 1995, 117, 7578;
17. +: D. Bourissou, G. Bertrand, Top. Curr. Chem. 2002, 220, 1;
18. D. Bourissou, Y. Canac, M. I. Collado, A. Barceirdo, G. Bertrand, J. Am. Chem. Soc. 1997, 119, 9923;
19. D. Bourissou, Y. Canac, H. Gornitzka, A. Barceirdo, G. Bertrand, Eur. J. Inorg. Chem. 1999, 1479.
20. B. S. Jursic, THEOCHEM 1999, 491, 33.
21. G. Frenking, R. B. Remington, H. F. Schaefer III, J. Am. Chem. Soc. 1986, 108, 2169.
22. J. S. Figueroa, C. C. Cummins, Angew. Chem. 2004, 116, 1002;
23. Angew. Chem. Int. Ed. 2004, 43, 984.
24. J. S. Figueroa, C. C. Cummins, J. Am. Chem. Soc. 2004, 126, 13 917.
25. A. H. Cowley, Acc. Chem. Res. 1997, 30, 445.
26. x]·2 under the reaction conditions employed because of its low solubility in THF; a full description of general synthetic procedures can be found in the Supporting Information; see also the Supporting Information of reference [7].
27. J. S. Figueroa, C. C. Cummins, J. Am. Chem. Soc. 2003, 125, 4020.
28. 2} unit in 3.
29. L. Pauling, The Nature of the Chemical Bond, 3rd ed., Cornell University Press, Ithaca, NY, 1960, chap. 11, p. 405.
30. 4 is 2.21 Å: N. N. Greenwood,A. Earnshaw, Chemistry of the Elements, 2nd ed., Butterworth-Heinemann, Oxford, 1997, chap. 12, p. 479.
31. 3} fragments, which are required to reveal a chemically sensible molecular geometry, are masked relative to the central ring (see the Supporting Information for full details).
32. The molecular-orbital splitting patterns calculated for models 4a-c are qualitatively identical.
33. M. Swart, P. T. van Duijnen, J. G. Snijders, J. Comput. Chem. 2001, 22, 79.
34. a) Y.-R. Luo, S. W. Benson, J. Phys. Chem. 1989, 93, 7333;
35. b) J. Kapp, M. Remko, P. von R. Schleyer, Inorg. Chem. 1997, 36, 4241;
36. c) C. H. Suresh, N. Koga, J. Am. Chem. Soc. 2002, 124, 1790.
37. a) G. Schreckenbach, T. Ziegler, J. Phys. Chem. 1995, 99, 606;
38. b) T. M. Gilbert, T. Ziegler, J. Phys. Chem. A 1999, 103, 7537.
39. so made a negligible contribution (13-21 ppm).
40. a) Y. Ruiz-Morales, G. Schreckenbach, T. Ziegler, Organometallics 1996, 15, 3920;
41. b) Y. Ruiz-Morales, G. Schreckenbach, T. Ziegler, J. Phys. Chem. 1996, 100, 3359;
42. c) Y. Ruiz-Morales, G. Schreckenbach, T. Ziegler, J. Chem. Phys. 1996, 104, 8605.
43. 119Sn NMR chemical shifts in divalent Sn complexes, see: a) B. E. Eichler, B. L. Phillips, P. P. Power, M. P. Augustine, Inorg. Chem. 2000, 39, 5450;
44. 203Pb NMR shift for 1c were unsuccessful.
45. 2] (1c), respectively. These data can be obtained free of charge from the Cambridge Crystallographic Data Center via www.ccdc.cam.ac.uk/data request/cif.