
1. A bonding orbital for C1C2 with 1.9952 electrons
__has 50.00% C 1 character in a sp2.41 hybrid
__has 50.00% C 2 character in a sp2.41 hybrid
2. A bonding orbital for C1F3 with 1.9970 electrons
__has 27.74% C 1 character in a s0.77 p3 hybrid
__has 72.26% F 3 character in a sp2.89 hybrid
3. A bonding orbital for C1H4 with 1.9853 electrons
__has 57.90% C 1 character in a sp3.01 hybrid
__has 42.10% H 4 character in a s orbital
4. A bonding orbital for C1H5 with 1.9887 electrons
__has 58.66% C 1 character in a sp2.89 hybrid
__has 41.34% H 5 character in a s orbital
5. A bonding orbital for C2H6 with 1.9854 electrons
__has 57.90% C 2 character in a sp3.01 hybrid
__has 42.10% H 6 character in a s orbital
6. A bonding orbital for C2H7 with 1.9886 electrons
__has 58.66% C 2 character in a sp2.89 hybrid
__has 41.34% H 7 character in a s orbital
7. A bonding orbital for C2F8 with 1.9970 electrons
__has 27.73% C 2 character in a s0.77 p3 hybrid
__has 72.27% F 8 character in a sp2.89 hybrid
12. A lone pair orbital for F3 with 1.9953 electrons
__made from a s orbital
13. A lone pair orbital for F3 with 1.9804 electrons
__made from a ppi orbital ( 99.98% p)
14. A lone pair orbital for F3 with 1.9786 electrons
__made from a p3 hybrid
15. A lone pair orbital for F8 with 1.9953 electrons
__made from a s orbital
16. A lone pair orbital for F8 with 1.9805 electrons
__made from a ppi orbital ( 99.98% p)
17. A lone pair orbital for F8 with 1.9787 electrons
__made from a p3 hybrid
With core pairs on: C 1 C 2 F 3 F 8 
The interaction of bonding donor orbital, 3, for C1H4 with the antibonding acceptor orbital, 120, for C2F8 is 22.3 kJ/mol.
The interaction of bonding donor orbital, 5, for C2H6 with the antibonding acceptor orbital, 115, for C1F3 is 22.3 kJ/mol.
The interaction of the second lone pair donor orbital, 13, for F3 with the antibonding acceptor orbital, 117, for C1H5 is 30.1 kJ/mol.
The interaction of the third lone pair donor orbital, 14, for F3 with the antibonding acceptor orbital, 114, for C1C2 is 30.6 kJ/mol.
The interaction of the second lone pair donor orbital, 16, for F8 with the antibonding acceptor orbital, 119, for C2H7 is 29.9 kJ/mol.
The interaction of the third lone pair donor orbital, 17, for F8 with the antibonding acceptor orbital, 114, for C1C2 is 30.7 kJ/mol.
21  1.762
20  1.732
19  0.862
18  0.289
17 ^v 8.037
16 ^v 8.337 15 ^v 8.397
14 ^v 9.396
13 ^v 11.19
12 ^v 11.43
11 ^v 12.24
10 ^v 12.93 9 ^v 12.95
8 ^v 15.83
7 ^v 19.21
6 ^v 29.37 5 ^v 29.64
4 ^v 268.7 3 ^v 268.7
2 ^v 655.4 1 ^v 655.4