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 CH2CCHCH3 (1,2-Butadiene)

using model chemistry: MP2=FULL/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-155.459013
Energy at 298.15K-155.463963
HF Energy-154.911484
Nuclear repulsion energy101.557548
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-pVDZ
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' 3207 3048 15.21      
2 A' 3189 3031 1.39      
3 A' 3183 3026 2.08      
4 A' 3085 2932 30.60      
5 A' 2057 1955 13.82      
6 A' 1504 1430 2.47      
7 A' 1473 1400 5.04      
8 A' 1406 1336 2.58      
9 A' 1358 1291 6.73      
10 A' 1156 1099 0.16      
11 A' 1090 1036 2.68      
12 A' 891 847 4.21      
13 A' 853 811 48.92      
14 A' 560 532 5.70      
15 A' 204 194 0.92      
16 A" 3282 3120 1.51      
17 A" 3171 3014 15.75      
18 A" 1483 1409 5.66      
19 A" 1056 1004 0.41      
20 A" 1015 965 0.16      
21 A" 890 846 16.24      
22 A" 530 504 5.35      
23 A" 333 317 4.91      
24 A" 170 161 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 18573.8 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 17652.5 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-pVDZ
ABC
1.11785 0.13809 0.12925

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.705 1.836 0.000
C2 0.000 0.716 0.000
C3 0.698 -0.408 0.000
C4 0.080 -1.786 0.000
H5 -1.005 2.314 0.938
H6 -1.005 2.314 -0.938
H7 1.793 -0.336 0.000
H8 -1.018 -1.725 0.000
H9 0.399 -2.356 -0.889
H10 0.399 -2.356 0.889

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.32312.64643.70641.09461.09463.31063.57464.42504.4250
C21.32311.32342.50402.10772.10772.07942.64493.22303.2230
C32.64641.32341.51013.34503.34501.09802.16232.16152.1615
C43.70642.50401.51014.34404.34402.24421.09961.10271.1027
H51.09462.10773.34504.34401.87573.96674.14655.20744.8768
H61.09462.10773.34504.34401.87573.96674.14654.87685.2074
H73.31062.07941.09802.24423.96673.96673.13512.60992.6099
H83.57462.64492.16231.09964.14654.14653.13511.78761.7876
H94.42503.22302.16151.10275.20744.87682.60991.78761.7774
H104.42503.22302.16151.10274.87685.20742.60991.78761.7774

picture of 1,2-Butadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.609 C2 C1 H5 121.042
C2 C1 H6 121.042 C2 C3 C4 124.061
C2 C3 H7 118.059 C3 C4 H8 110.928
C3 C4 H9 110.680 C3 C4 H10 110.680
C4 C3 H7 117.880 H5 C1 H6 117.915
H8 C4 H9 108.519 H8 C4 H10 108.519
H9 C4 H10 107.405
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability