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All results from a given calculation for C6H8 (Bicyclo[2.1.1]hex-2-ene)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-231.027789
Energy at 298.15K-231.037268
HF Energy-230.488000
Nuclear repulsion energy227.869451
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3279 3120 8.69      
2 A1 3195 3040 7.06      
3 A1 3193 3038 25.70      
4 A1 3109 2957 27.21      
5 A1 1582 1505 0.42      
6 A1 1555 1479 0.01      
7 A1 1287 1225 3.12      
8 A1 1156 1100 1.17      
9 A1 1094 1041 0.02      
10 A1 1009 960 0.03      
11 A1 932 887 0.17      
12 A1 867 825 0.81      
13 A1 528 502 0.48      
14 A2 1279 1217 0.00      
15 A2 1146 1090 0.00      
16 A2 1108 1054 0.00      
17 A2 906 862 0.00      
18 A2 826 786 0.00      
19 A2 539 513 0.00      
20 B1 3188 3033 21.78      
21 B1 3101 2950 32.56      
22 B1 1551 1475 0.74      
23 B1 1245 1184 2.03      
24 B1 1022 972 3.58      
25 B1 807 768 8.01      
26 B1 698 664 48.55      
27 B1 466 444 8.98      
28 B2 3249 3091 4.94      
29 B2 3187 3032 48.32      
30 B2 1351 1285 16.04      
31 B2 1314 1250 0.00      
32 B2 1245 1184 7.24      
33 B2 1150 1094 2.26      
34 B2 909 864 0.01      
35 B2 820 780 5.04      
36 B2 727 692 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 27310.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 25980.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/3-21G*
ABC
0.18815 0.15269 0.14001

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.678 1.225
C2 0.000 -0.678 1.225
C3 0.000 -1.044 -0.289
C4 0.000 1.044 -0.289
C5 1.089 0.000 -0.815
C6 -1.089 0.000 -0.815
H7 0.000 1.369 2.056
H8 0.000 -1.369 2.056
H9 0.000 -2.094 -0.574
H10 0.000 2.094 -0.574
H11 2.052 0.000 -0.302
H12 -2.052 0.000 -0.302
H13 -1.191 0.000 -1.906
H14 1.191 0.000 -1.906

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.35522.29231.55712.40952.40951.08162.20923.30392.28922.64572.64573.41693.4169
C21.35521.55712.29232.40952.40952.20921.08162.28923.30392.64572.64573.41693.4169
C32.29231.55712.08811.59771.59773.36492.36741.08803.15102.30252.30252.26322.2632
C41.55712.29232.08811.59771.59772.36743.36493.15101.08802.30252.30252.26322.2632
C52.40952.40951.59771.59772.17763.36233.36232.37252.37251.09183.18272.52691.0951
C62.40952.40951.59771.59772.17763.36233.36232.37252.37253.18271.09181.09512.5269
H71.08162.20923.36492.36743.36233.36232.73834.34862.72803.41253.41254.35754.3575
H82.20921.08162.36743.36493.36233.36232.73832.72804.34863.41253.41254.35754.3575
H93.30392.28921.08803.15102.37252.37254.34862.72804.18812.94462.94462.75262.7526
H102.28923.30393.15101.08802.37252.37252.72804.34864.18812.94462.94462.75262.7526
H112.64572.64572.30252.30251.09183.18273.41253.41252.94462.94464.10443.61791.8207
H122.64572.64572.30252.30253.18271.09183.41253.41252.94462.94464.10441.82073.6179
H133.41693.41692.26322.26322.52691.09514.35754.35752.75262.75263.61791.82072.3814
H143.41693.41692.26322.26321.09512.52694.35754.35752.75262.75261.82073.61792.3814

picture of Bicyclo[2.1.1]hex-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 103.611 C1 C2 H8 129.748
C1 C4 C5 99.583 C1 C4 C6 99.583
C1 C4 H10 118.793 C2 C1 C4 103.611
C2 C1 H7 129.748 C2 C3 C5 99.583
C2 C3 C6 99.583 C2 C3 H9 118.793
C3 C2 H8 126.641 C3 C5 C4 81.607
C3 C5 H11 116.507 C3 C5 H14 113.047
C3 C6 C4 81.607 C3 C6 H12 116.507
C3 C6 H13 113.047 C4 C1 H7 126.641
C4 C5 H11 116.507 C4 C5 H14 113.047
C4 C6 H12 116.507 C4 C6 H13 113.047
C5 C3 C6 85.918 C5 C3 H9 122.981
C5 C4 C6 85.918 C5 C4 H10 122.981
C6 C3 H9 122.981 C6 C4 H10 122.981
H11 C5 H14 112.727 H12 C6 H13 112.727
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability