1 6 Ethylene 2 1 C 2 3 2 C 2 1 1.33756 4 3 H 5 1 1.10243 2 120.8543 5 4 H 5 1 1.10243 2 120.8543 3 118.2914 -1 6 5 H 5 2 1.10243 1 120.8543 3 0.0000 0 7 6 H 5 2 1.10243 1 120.8543 5 118.2914 -1 8