
1. A bonding orbital for O1S2 with 1.9885 electrons
__has 70.26% O 1 character in a s0.64 p3 hybrid
__has 29.74% S 2 character in a s0.39 p3 d0.09 hybrid
2. A bonding orbital for O1H6 with 1.9942 electrons
__has 75.06% O 1 character in a s0.95 p3 hybrid
__has 24.94% H 6 character in a s orbital
3. A bonding orbital for S2O3 with 1.9877 electrons
__has 29.75% S 2 character in a s0.39 p3 d0.09 hybrid
__has 70.25% O 3 character in a s0.63 p3 hybrid
4. A bonding orbital for S2O5 with 1.9864 electrons
__has 35.93% S 2 character in a s0.77 p3 d0.07 hybrid
__has 64.07% O 5 character in a s0.78 p3 hybrid
5. A bonding orbital for O3H4 with 1.9939 electrons
__has 75.22% O 3 character in a s0.97 p3 hybrid
__has 24.78% H 4 character in a s orbital
14. A lone pair orbital for O1 with 1.9874 electrons
__made from a sp0.71 hybrid
15. A lone pair orbital for O1 with 1.9566 electrons
__made from a p3 hybrid
16. A lone pair orbital for S2 with 1.9888 electrons
__made from a sp0.69 hybrid
17. A lone pair orbital for O3 with 1.9885 electrons
__made from a sp0.72 hybrid
18. A lone pair orbital for O3 with 1.9607 electrons
__made from a p3 hybrid
19. A lone pair orbital for O5 with 1.9946 electrons
__made from a sp0.27 hybrid
20. A lone pair orbital for O5 with 1.8813 electrons
__made from a p3 hybrid
21. A lone pair orbital for O5 with 1.8260 electrons
__made from a p3 hybrid
111. A antibonding orbital for O1S2 with 0.1488 electrons
__has 29.74% O 1 character in a s0.64 p3 hybrid
__has 70.26% S 2 character in a s0.39 p3 d0.09 hybrid
113. A antibonding orbital for S2O3 with 0.1466 electrons
__has 70.25% S 2 character in a s0.39 p3 d0.09 hybrid
__has 29.75% O 3 character in a s0.63 p3 hybrid
With core pairs on: O 1 S 2 S 2 S 2 S 2 S 2 O 3 O 5 
The interaction of the second lone pair donor orbital, 15, for O1 with the antibonding acceptor orbital, 113, for S2O3 is 47.4 kJ/mol.
The interaction of the second lone pair donor orbital, 18, for O3 with the antibonding acceptor orbital, 111, for O1S2 is 51.6 kJ/mol.
The interaction of the second lone pair donor orbital, 20, for O5 with the antibonding acceptor orbital, 111, for O1S2 is 66.0 kJ/mol.
The interaction of the second lone pair donor orbital, 20, for O5 with the antibonding acceptor orbital, 113, for S2O3 is 75.7 kJ/mol.
The interaction of the third lone pair donor orbital, 21, for O5 with the antibonding acceptor orbital, 111, for O1S2 is 122. kJ/mol.
The interaction of the third lone pair donor orbital, 21, for O5 with the antibonding acceptor orbital, 113, for S2O3 is 109. kJ/mol.
25  0.440
24  0.115
23  1.346
22  1.674
21 ^v 7.441
20 ^v 7.855
19 ^v 8.617
18 ^v 9.329
17 ^v 9.758
16 ^v 11.19
15 ^v 12.07
14 ^v 12.84
13 ^v 14.47
12 ^v 17.86
11 ^v 25.45
10 ^v 25.96
9 ^v 28.25
8 ^v 159.4
7 ^v 159.7
6 ^v 159.7
5 ^v 212.5
4 ^v 507.1
3 ^v 508.0
2 ^v 508.1
1 ^v 2392.
Total electronic energy = 625.1749626936 Hartrees
* Free sulfurous acid is not known. Rather, solutions of sulfurous acid are better characterized as a clathrate of SO_{2}, SO_{2}.. 7 H_{2}O. See F. A. Cotton and G. Wilkinson, Advanced Inorganic Chemistry, Wiley, New York, NY., 1966. 2nd Ed. Section 2113. Top of page.