return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CHCHCH2 (1,3-Butadiene)

using model chemistry: MP2=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
1 2 no C2 1A

Conformer 1 (C2H)

Jump to S1C2
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-155.552074
Energy at 298.15K-155.557387
HF Energy-154.947629
Nuclear repulsion energy103.507150
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=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3283 3109 0.00      
2 Ag 3188 3020 0.00      
3 Ag 3177 3009 0.00      
4 Ag 1718 1627 0.00      
5 Ag 1495 1416 0.00      
6 Ag 1325 1255 0.00      
7 Ag 1248 1182 0.00      
8 Ag 914 865 0.00      
9 Ag 521 493 0.00      
10 Au 1038 984 50.45      
11 Au 891 844 89.75      
12 Au 525 498 14.87      
13 Au 157 148 0.43      
14 Bg 980 928 0.00      
15 Bg 891 844 0.00      
16 Bg 764 724 0.00      
17 Bu 3283 3110 23.79      
18 Bu 3191 3022 11.82      
19 Bu 3181 3013 16.24      
20 Bu 1651 1564 11.26      
21 Bu 1429 1354 6.13      
22 Bu 1335 1265 2.11      
23 Bu 1016 962 3.10      
24 Bu 299 283 1.98      

Unscaled Zero Point Vibrational Energy (zpe) 18750.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 17758.1 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=FULL/6-311G*
ABC
1.39807 0.14733 0.13329

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.729 0.000
C2 0.000 -0.729 0.000
C3 1.118 1.476 0.000
C4 -1.118 -1.476 0.000
H5 -0.972 1.221 0.000
H6 0.972 -1.221 0.000
H7 1.076 2.559 0.000
H8 2.102 1.018 0.000
H9 -1.076 -2.559 0.000
H10 -2.102 -1.018 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.45841.34432.47231.08962.17892.12302.12223.46002.7336
C21.45842.47231.34432.17891.08963.46002.73362.12302.1222
C31.34432.47233.70292.10582.70051.08401.08604.59304.0730
C42.47231.34433.70292.70052.10584.59304.07301.08401.0860
H51.08962.17892.10582.70053.12142.44723.08163.78122.5076
H62.17891.08962.70052.10583.12143.78122.50762.44723.0816
H72.12303.46001.08404.59302.44723.78121.85175.55254.7853
H82.12222.73361.08604.07303.08162.50761.85174.78534.6718
H93.46002.12304.59301.08403.78122.44725.55254.78531.8517
H102.73362.12224.07301.08602.50763.08164.78534.67181.8517

picture of 1,3-Butadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 123.744 C1 C2 H6 116.811
C1 C3 H7 121.545 C1 C3 H8 121.306
C2 C1 C3 123.744 C2 C1 H5 116.811
C2 C4 H9 121.545 C2 C4 H10 121.306
C3 C1 H5 119.445 C4 C2 H6 119.445
H7 C3 H8 117.148 H9 C4 H10 117.148
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-155.547990
Energy at 298.15K-155.553353
HF Energy-154.942478
Nuclear repulsion energy104.761437
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=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3286 3112 4.47      
2 A 3197 3028 6.56      
3 A 3183 3015 14.61      
4 A 1687 1597 2.32      
5 A 1487 1408 10.93      
6 A 1350 1278 0.00      
7 A 1086 1028 0.04      
8 A 1001 948 5.33      
9 A 914 866 6.69      
10 A 905 857 4.20      
11 A 754 714 5.70      
12 A 277 262 0.01      
13 A 190 180 0.08      
14 B 3285 3111 18.96      
15 B 3188 3020 11.08      
16 B 3179 3011 4.59      
17 B 1688 1598 2.72      
18 B 1453 1376 2.25      
19 B 1317 1247 0.26      
20 B 1112 1053 4.60      
21 B 1024 970 42.78      
22 B 910 862 78.26      
23 B 632 599 9.14      
24 B 462 438 13.96      

Unscaled Zero Point Vibrational Energy (zpe) 18783.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 17789.4 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=FULL/6-311G*
ABC
0.70756 0.18823 0.15388

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.125 0.724 0.555
C2 -0.125 -0.724 0.555
C3 -0.125 1.529 -0.491
C4 0.125 -1.529 -0.491
H5 0.518 1.159 1.473
H6 -0.518 -1.159 1.473
H7 0.096 2.590 -0.452
H8 -0.571 1.145 -1.403
H9 -0.096 -2.590 -0.452
H10 0.571 -1.145 -1.403

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.47031.34292.48451.08912.19152.12002.11953.47102.7432
C21.47032.48451.34292.19151.08913.47102.74322.12002.1195
C31.34292.48453.06882.09923.35221.08431.08544.11962.9097
C42.48451.34293.06883.35222.09924.11962.90971.08431.0854
H51.08912.19152.09923.35222.53842.43523.07484.25863.6851
H62.19151.08913.35222.09922.53844.25863.68512.43523.0748
H72.12003.47101.08434.11962.43524.25861.85425.18373.8832
H82.11952.74321.08542.90973.07483.68511.85423.88322.5586
H93.47102.12004.11961.08434.25862.43525.18373.88321.8542
H102.74322.11952.90971.08543.68513.07483.88322.55861.8542

picture of 1,3-Butadiene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 123.990 C1 C2 H6 117.021
C1 C3 H7 121.351 C1 C3 H8 121.214
C2 C1 C3 123.990 C2 C1 H5 117.021
C2 C4 H9 121.351 C2 C4 H10 121.214
C3 C1 H5 118.977 C4 C2 H6 118.977
H7 C3 H8 117.429 H9 C4 H10 117.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability