Supplementary material for González-Luque (2000) Proc. Natl. Acad. Sci. USA 97 (17), 9379-9384.

Table 5.

S0, S1, S2 state-averaged CASSCF and CASPT2 total and relative (DE) energies for the PSBT model 2

Structure

State

CASSCF au

CASPT2 au

w*

D

E eV (kcal mol-1)

Planar FC

S

0

-325.19196

-326.12634

0.764

0.00 (0.00)

S

1

-325.04494

-326.00437

0.749

3.32 (76.5)

S

2

-325.01028

-325.96505

0.752

4.39 (101.2)

Planar SP

S

0

-325.16683

-326.10828

0.760

0.49 (11.3)

S

1

-325.06022

-326.01473

0.748

3.04 (70.0)

S

2

-325.02375

-325.97931

0.748

4.00 (92.3)

Twist 90° CI

S

0

-325.10274

-326.04566

0.757

2.20 (50.6)

S

1

-325.09817

-326.05685

0.751

1.89 (43.6)

S

2

-325.00384

-325.95196

0.744

4.75 (109.4)

The basis set used is 6-31G* (see Computational Methods for details).

*Weight of the CASSCF reference function (i.e., the zero-order function) in the first-order function.