| C6 | C8 | C10 | Ref. |
|---|---|---|---|
| 4.531[3] | 5.258[5] | 6.833[7] | S. H. Patil and K. T. Tang, J. Chem. Phys. 106, 2301 (1997) |
| 4.550(0.1)[3] | n/a | n/a | H. M. J. M. Boesten, C. C. Tsai, B. J. Verhaar, and D. J. Heinzen, Phys. Rev. Lett. 77, 5194 (1996) |
| 4.426[3] | 5.506[5] | 7.665[7] | M. Marinescu, H. R. Sadeghpour, and A. Dalgarno, Phys. Rev. A 49, 982 (1994) |
| 5.726[3] | 6.115[5] | 6.316[7] | B. Bussery and M. Aubert-Frecon, J. Chem. Phys. 82, 3224 (1985) |
| 4.700[3] | - | - | M. L. Manakov and V. O. Ovsiannikov, J. Phys. B 10, 569 (1985) |
| 4.69(0.05)[3] | 5.295(0.135)[5] | 6.91(0.27)[7] | J. M. Standard and P. R. Certain, J. Chem. Phys. 83, 3002 (1985) |
| 4.768[3] | 5.244[5] | 6.836[7] | F. Maeder and W. Kutzelnigg, Chem. Phys. 42, 195 (1979) |
| 4.87(0.07)[3] | 6.100(0.566)[5] | 8.018(1.082)[7] | K. T. Tang, J. M. Norbeck, and P. R. Certain, J. Chem. Phys. 64, 3063 (1975) |
| 4.350[3] | - | - | P. W. Langhoff and M. Karplus, J. Chem. Phys. 53, 233 (1970) |
| 4.67(0.07)[3] | - | - | A. Dalgarno and W. D. Davision, Adv. At. Mol. Phys. 2, 1 (1966) |