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All results from a given calculation for CH3CHCHCH3 (2-Butene, (E)-)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-155.654557
Energy at 298.15K-155.662260
HF Energy-155.243936
Nuclear repulsion energy114.693005
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 CCD/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 A 3113 2978 0.00      
2 A 3094 2959 0.00      
3 A 3027 2895 0.00      
4 A 1735 1659 0.00      
5 A 1576 1507 0.00      
6 A 1481 1417 0.00      
7 A 1379 1319 0.00      
8 A 1187 1135 0.00      
9 A 878 840 0.00      
10 A 507 485 0.00      
11 A 3079 2945 47.77      
12 A 1567 1499 12.06      
13 A 1122 1074 0.04      
14 A 1007 963 36.05      
15 A 242 232 3.67      
16 A 160 153 0.68      
17 A 3079 2945 0.00      
18 A 1568 1500 0.00      
19 A 1119 1070 0.00      
20 A 761 728 0.00      
21 A 203 195 0.00      
22 A 3121 2986 60.41      
23 A 3092 2957 18.92      
24 A 3026 2895 41.69      
25 A 1583 1514 12.89      
26 A 1481 1417 7.79      
27 A 1387 1327 1.50      
28 A 1063 1017 4.56      
29 A 1017 973 6.00      
30 A 290 277 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 23971.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 22928.5 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 CCD/3-21G*
ABC
1.13612 0.12169 0.11469

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.671 0.000
C2 0.000 -0.671 0.000
C3 -1.256 1.536 0.000
C4 1.256 -1.536 0.000
H5 0.952 1.209 0.000
H6 -0.952 -1.209 0.000
H7 -2.156 0.905 0.000
H8 2.156 -0.905 0.000
H9 -1.287 2.183 0.889
H10 -1.287 2.183 -0.889
H11 1.287 -2.183 0.889
H12 1.287 -2.183 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34171.52542.53931.09412.10772.16912.67072.17582.17583.25473.2547
C21.34172.53931.52542.10771.09412.67072.16913.25473.25472.17582.1758
C31.52542.53933.96862.23272.76211.09944.19571.10041.10044.59254.5925
C42.53931.52543.96862.76212.23274.19571.09944.59254.59251.10041.1004
H51.09412.10772.23272.76213.07883.12382.43292.59862.59863.52333.5233
H62.10771.09412.76212.23273.07882.43293.12383.52333.52332.59862.5986
H72.16912.67071.09944.19573.12382.43294.67711.78391.78394.70984.7098
H82.67072.16914.19571.09942.43293.12384.67714.70984.70981.78391.7839
H92.17583.25471.10044.59252.59863.52331.78394.70981.77865.06865.3716
H102.17583.25471.10044.59252.59863.52331.78394.70981.77865.37165.0686
H113.25472.17584.59251.10043.52332.59864.70981.78395.06865.37161.7786
H123.25472.17584.59251.10043.52332.59864.70981.78395.37165.06861.7786

picture of 2-Butene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.549 C1 C2 H6 119.490
C1 C3 H7 110.408 C1 C3 H9 110.878
C1 C3 H10 110.878 C2 C1 C3 124.549
C2 C1 H5 119.490 C2 C4 H8 110.408
C2 C4 H11 110.878 C2 C4 H12 110.878
C3 C1 H5 115.961 C4 C2 H6 115.961
H7 C3 H9 108.375 H7 C3 H10 108.375
H8 C4 H11 108.375 H8 C4 H12 108.375
H9 C3 H10 107.827 H11 C4 H12 107.827
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability