18.1.8 B97R: B97 Re-parameterized by Hamprecht et al. B97R=B97R + 0.21Exact Exchange

F. A. Hamprecht, A. J. Cohen, D. J. Tozer and N. C. Handy, J. Chem. Phys. 109, 6264 (1998)

Re-parameterization of the B97 functional in a self-consistent procedure by Hamprecht et al. B97RDF is given by

$$A = [ 0.955689, 0.788552,- 5.47869] ,$$ (44)

$$B = [ 0.0820011, 2.71681,- 2.87103] ,$$ (45)

$$C = [ 0.789518, 0.573805, 0.660975]$$ (46)