
1. A bonding orbital for C1C2 with 1.9967 electrons
__has 49.19% C 1 character in a sp1.53 hybrid
__has 50.81% C 2 character in a sp1.30 hybrid
2. A bonding orbital for C1C2 with 1.9963 electrons
__has 48.61% C 1 character in a ppi orbital ( 99.83% p 0.17% d)
__has 51.39% C 2 character in a ppi orbital ( 99.87% p 0.13% d)
3. A bonding orbital for C1H3 with 1.9782 electrons
__has 59.89% C 1 character in a sp2.33 hybrid
__has 40.11% H 3 character in a s orbital
4. A bonding orbital for C1H4 with 1.9866 electrons
__has 60.24% C 1 character in a sp2.24 hybrid
__has 39.76% H 4 character in a s orbital
5. A bonding orbital for C2Cl5 with 1.9915 electrons
__has 44.05% C 2 character in a s0.98 p3 hybrid
__has 55.95% Cl 5 character in a s0.63 p3 hybrid
6. A bonding orbital for C2H6 with 1.9849 electrons
__has 60.83% C 2 character in a sp2.11 hybrid
__has 39.17% H 6 character in a s orbital
14. A lone pair orbital for Cl5 with 1.9945 electrons
__made from a sp0.21 hybrid
15. A lone pair orbital for Cl5 with 1.9775 electrons
__made from a p3 hybrid
16. A lone pair orbital for Cl5 with 1.9506 electrons
__made from a ppi orbital ( 99.97% p)
With core pairs on: C 1 C 2 Cl 5 Cl 5 Cl 5 Cl 5 Cl 5 
The interaction of bonding donor orbital, 3, for C1H3 with the antibonding acceptor orbital, 96, for C2Cl5 is 43.1 kJ/mol.
The interaction of bonding donor orbital, 4, for C1H4 with the antibonding acceptor orbital, 97, for C2H6 is 24.6 kJ/mol.
The interaction of bonding donor orbital, 6, for C2H6 with the antibonding acceptor orbital, 95, for C1H4 is 20.4 kJ/mol.
The interaction of the second lone pair donor orbital, 15, for Cl5 with the antibonding acceptor orbital, 92, for C1C2 is 25.9 kJ/mol.
The interaction of the second lone pair donor orbital, 15, for Cl5 with the antibonding acceptor orbital, 97, for C2H6 is 25.6 kJ/mol.
The interaction of the third lone pair donor orbital, 16, for Cl5 with the second antibonding acceptor orbital, 93, for C1C2 is 79.5 kJ/mol.
20  2.261
19  1.848
18  0.351
17  1.586
16 ^v 6.583
15 ^v 7.607
14 ^v 9.044
13 ^v 9.442
12 ^v 11.18
11 ^v 12.08
10 ^v 14.38
9 ^v 18.53
8 ^v 21.71
7 ^v 190.3
6 ^v 190.3
5 ^v 190.7
4 ^v 248.7
3 ^v 266.7
2 ^v 268.2
1 ^v 2729.
Total electronic energy = 538.2567661861 Hartrees