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All results from a given calculation for C5H8 (1,3-Butadiene, 2-methyl-)

using model chemistry: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-194.934464
Energy at 298.15K-194.942229
HF Energy-194.028212
Nuclear repulsion energy161.574383
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/cc-pVTZ
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' 3288 3121 8.55      
2 A' 3278 3112 7.29      
3 A' 3215 3052 2.55      
4 A' 3198 3036 7.40      
5 A' 3194 3032 4.91      
6 A' 3178 3017 13.24      
7 A' 3085 2929 15.08      
8 A' 1717 1630 1.86      
9 A' 1667 1582 16.87      
10 A' 1524 1447 6.60      
11 A' 1478 1403 2.14      
12 A' 1452 1378 3.34      
13 A' 1418 1346 7.77      
14 A' 1352 1283 0.31      
15 A' 1328 1261 0.25      
16 A' 1095 1039 3.06      
17 A' 1013 962 0.30      
18 A' 980 930 0.68      
19 A' 814 773 0.13      
20 A' 534 507 0.08      
21 A' 423 401 1.56      
22 A' 284 269 0.78      
23 A" 3148 2988 10.41      
24 A" 1504 1428 8.57      
25 A" 1080 1025 0.23      
26 A" 1045 992 18.84      
27 A" 952 904 35.42      
28 A" 945 897 39.09      
29 A" 804 763 0.65      
30 A" 658 624 0.10      
31 A" 415 394 9.27      
32 A" 222 211 0.36      
33 A" 167 159 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 25224.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 23947.9 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/cc-pVTZ
ABC
0.28965 0.14157 0.09678

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 1.730 0.000
C2 0.000 0.523 0.000
C3 -0.828 -0.674 0.000
C4 -0.366 -1.925 0.000
C5 1.482 0.351 0.000
H6 -1.646 1.839 0.000
H7 0.014 2.633 0.000
H8 -1.894 -0.504 0.000
H9 0.688 -2.145 0.000
H10 -1.040 -2.764 0.000
H11 1.978 1.315 0.000
H12 1.805 -0.205 0.876
H13 1.805 -0.205 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33582.41713.66062.47521.07821.07722.59494.07524.51822.58503.18873.1887
C21.33581.45542.47541.49222.10712.10992.15452.75583.44822.13082.13442.1344
C32.41711.45541.33352.52712.64263.41241.07972.11262.10113.43942.81372.8137
C43.66062.47541.33352.93193.97544.57382.08651.07721.07663.99912.90462.9046
C52.47521.49222.52712.93193.46402.71393.48272.61944.00851.08421.08681.0868
H61.07822.10712.64263.97543.46401.83982.35584.61764.64283.66184.10544.1054
H71.07722.10993.41244.57382.71391.83983.67144.82575.49932.36583.46893.4689
H82.59492.15451.07972.08653.48272.35583.67143.05982.41624.27813.81273.8127
H94.07522.75582.11261.07722.61944.61764.82573.05981.83623.69292.40342.4034
H104.51823.44822.10111.07664.00854.64285.49932.41621.83625.07473.92553.9255
H112.58502.13083.43943.99911.08423.66182.36584.27813.69295.07471.76341.7634
H123.18872.13442.81372.90461.08684.10543.46893.81272.40343.92551.76341.7523
H133.18872.13442.81372.90461.08684.10543.46893.81272.40343.92551.76341.7523

picture of 1,3-Butadiene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.924 C1 C2 C5 122.046
C2 C1 H6 121.222 C2 C1 H7 121.572
C2 C3 C4 125.086 C2 C3 H8 115.601
C2 C5 H11 110.594 C2 C5 H12 110.724
C2 C5 H13 110.724 C3 C2 C5 118.030
C3 C4 H9 122.055 C3 C4 H10 120.970
C4 C3 H8 119.313 H6 C1 H7 117.206
H9 C4 H10 116.974 H11 C5 H12 108.633
H11 C5 H13 108.633 H12 C5 H13 107.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability