
1. A bonding orbital for C1C2 with 1.9955 electrons
__has 51.72% C 1 character in a sp2.65 hybrid
__has 48.28% C 2 character in a sp1.72 hybrid
2. A bonding orbital for C1H3 with 1.9782 electrons
__has 60.25% C 1 character in a s0.91 p3 hybrid
__has 39.75% H 3 character in a s orbital
3. A bonding orbital for C1H4 with 1.9930 electrons
__has 60.90% C 1 character in a sp2.88 hybrid
__has 39.10% H 4 character in a s orbital
4. A bonding orbital for C1H5 with 1.9818 electrons
__has 60.11% C 1 character in a s0.93 p3 hybrid
__has 39.89% H 5 character in a s orbital
5. A bonding orbital for C2H6 with 1.9889 electrons
__has 56.24% C 2 character in a sp2.34 hybrid
__has 43.76% H 6 character in a s orbital
6. A bonding orbital for C2O7 with 1.9984 electrons
__has 34.99% C 2 character in a sp1.94 hybrid
__has 65.01% O 7 character in a sp1.47 hybrid
7. A bonding orbital for C2O7 with 1.9936 electrons
__has 30.53% C 2 character in a ppi orbital ( 99.42% p 0.58% d)
__has 69.47% O 7 character in a ppi orbital ( 99.81% p 0.18% d)
11. A lone pair orbital for O7 with 1.9832 electrons
__made from a sp0.67 hybrid
12. A lone pair orbital for O7 with 1.9100 electrons
__made from a p3 hybrid
With core pairs on: C 1 C 2 O 7 
The interaction of bonding donor orbital, 2, for C1H3 with the second antibonding acceptor orbital, 96, for C2O7 is 30.7 kJ/mol.
The interaction of bonding donor orbital, 4, for C1H5 with the second antibonding acceptor orbital, 96, for C2O7 is 22.9 kJ/mol.
The interaction of the second lone pair donor orbital, 12, for O7 with the antibonding acceptor orbital, 90, for C1C2 is 98.6 kJ/mol.
The interaction of the second lone pair donor orbital, 12, for O7 with the antibonding acceptor orbital, 94, for C2H6 is 124. kJ/mol.
16  2.605
15  1.935
14  1.649
13  2.272
12 ^v 5.982
11 ^v 9.117
10 ^v 9.715
9 ^v 10.67
8 ^v 11.07
7 ^v 11.76
6 ^v 14.23
5 ^v 18.64
4 ^v 26.01
3 ^v 266.7
2 ^v 268.9
1 ^v 506.5
Total electronic energy = 153.8860360491 Hartrees