Stable, three-coordinate Ni(CO)2(NHC) (NHC = N-heterocyclic carbene) complexes enabling the determination of Ni-NHC bond energies

Journal of the American Chemical Society

Volumn 125, Issue 35, 2003, Pages 10490-10491

  Dorta, Reto ^a   Stevens, Edwin D ^a   Hoff, Carl D ^b   Nolan, Steven P ^a  

^a UNIVERSITY OF NEW ORLEANS   (United States)

^b Department of Biology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CARBENE;

ARTICLE; CHEMICAL ANALYSIS; CHEMICAL BOND; CHEMICAL REACTION; CHEMICAL STRUCTURE; COMPLEX FORMATION; DISSOCIATION; ENERGY; EQUILIBRIUM CONSTANT; MOLECULAR STABILITY; REACTION ANALYSIS; STEREOCHEMISTRY;

EID: 0041856069     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0362151     Document Type: Article

References (37)

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17. 4 as it is EXTREMELY toxic.
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19. 3(NHC) complexes, see: (a) Herrmann, W. A.; Goossen, L. J.; Artus, G. R. J.; Köcher, C. Organometallics 1997, 16, 2472-2477. (b) Ofele, K.; Herrmann, W. A.; Mihalios, D.; Elison, M.; Herdtweck, E.; Scherer, W.; Mink, J. J. Organomet. Chem. 1993, 459, 177-184.
20. 3(NHC) complexes, have been carried out and will be published elsewhere.
21. -1. For less basic phosphines, see ref 6.
22. 2, showing shorter bond lengths of 1.827 and 1.830 Å, respectively, see: Arduengo, A. J., III; Gamper, S. F.; Calabrese, J. C.; Davidson, F. J. Am. Chem. Soc. 1994, 116, 4391-4394. (b) 1:1 Ni(II) - NHC complexes with Ni - C(NHC) distances of 1.9025(16) and 1.8571(13) Å have been reported recently, see: Dible, B. R.; Sigman, M. S. J. Am. Chem. Soc. 2003, 125, 872-873.
23. 2, showing shorter bond lengths of 1.827 and 1.830 Å, respectively, see: Arduengo, A. J., III; Gamper, S. F.; Calabrese, J. C.; Davidson, F. J. Am. Chem. Soc. 1994, 116, 4391-4394. (b) 1:1 Ni(II) - NHC complexes with Ni - C(NHC) distances of 1.9025(16) and 1.8571(13) Å have been reported recently, see: Dible, B. R.; Sigman, M. S. J. Am. Chem. Soc. 2003, 125, 872-873.
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26. (c) For Ni(O) complexes, see: Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2002, 124, 9976-9977. Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2001, 123, 4623-4624. Gosser, L. W.; Tolman, C. A. Inorg. Chem. 1970, 9, 2350-2353.
27. (c) For Ni(O) complexes, see: Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2002, 124, 9976-9977. Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2001, 123, 4623-4624. Gosser, L. W.; Tolman, C. A. Inorg. Chem. 1970, 9, 2350-2353.
28. (c) For Ni(O) complexes, see: Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2002, 124, 9976-9977. Mindiola, D. J.; Hillhouse, G. L. J. Am. Chem. Soc. 2001, 123, 4623-4624. Gosser, L. W.; Tolman, C. A. Inorg. Chem. 1970, 9, 2350-2353.
29. The experimental design of the FTIR cell has previously been described: Bender, B. R.; Kubas, G. J.; Jones, L. H.; Swanson, B. I.; Eckert, J.; Capps, K. B.; Hoff, C. D. J. Am. Chem. Soc. 1997, 119, 9179-9190.
30. Disproportionation was also observed when reacting 10 and 11 with tertbutylisoyanide and certain phosphines; unpublished results.
31. For details, see the Supporting Information.
32. Sunderlin, L. S.; Wang, D.; Squires, R. R. J. Am. Chem. Soc. 1992, 114, 2788-2796 and references cited.
33. 2Pd(aryl)-Cl complex: Caddick, S.; Cloke, F. G. N., private communication.
34. 3(IMes) which also failed to react with CO at 350 psi. See the Supporting Information for spectra.
35. (II)(NHC)(allyl)(X) complexes. These and related studies will be discussed in detail elsewhere.
36. (a) Simms, R. W.; Drewitt, M. J.; Baird, M. C. Organometallics 2002, 21, 2958-2963.
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