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

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-156.410447
Energy at 298.15K-156.418096
Nuclear repulsion energy113.704379
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/SDD
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 3136 3027 0.00      
2 A 3115 3007 0.00      
3 A 3010 2906 0.00      
4 A 1691 1632 0.00      
5 A 1539 1486 0.00      
6 A 1462 1411 0.00      
7 A 1345 1299 0.00      
8 A 1187 1146 0.00      
9 A 878 847 0.00      
10 A 497 480 0.00      
11 A 3099 2991 72.98      
12 A 1520 1467 18.10      
13 A 1102 1063 0.34      
14 A 1000 965 54.58      
15 A 239 231 5.63      
16 A 162 156 1.10      
17 A 3099 2991 0.00      
18 A 1520 1468 0.00      
19 A 1089 1051 0.00      
20 A 730 705 0.00      
21 A 208 201 0.00      
22 A 3144 3035 101.60      
23 A 3113 3005 32.70      
24 A 3010 2905 77.80      
25 A 1544 1490 21.08      
26 A 1462 1412 12.35      
27 A 1355 1308 1.54      
28 A 1080 1043 0.38      
29 A 1016 980 14.88      
30 A 277 267 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 23813.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 22987.4 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/SDD
ABC
1.11990 0.11937 0.11249

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.684 0.000
C2 0.000 -0.684 0.000
C3 -1.260 1.556 0.000
C4 1.260 -1.556 0.000
H5 0.965 1.212 0.000
H6 -0.965 -1.212 0.000
H7 -2.168 0.927 0.000
H8 2.168 -0.927 0.000
H9 -1.291 2.209 0.892
H10 -1.291 2.209 -0.892
H11 1.291 -2.209 0.892
H12 1.291 -2.209 -0.892

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.36891.53182.57021.09992.12782.18182.70152.18772.18773.29143.2914
C21.36892.57021.53182.12781.09992.70152.18183.29143.29142.18772.1877
C31.53182.57024.00392.25152.78331.10494.23271.10591.10594.63414.6341
C42.57021.53184.00392.78332.25154.23271.10494.63414.63411.10591.1059
H51.09992.12782.25152.78333.09853.14642.45402.62292.62293.55013.5501
H62.12781.09992.78332.25153.09852.45403.14643.55013.55012.62292.6229
H72.18182.70151.10494.23273.14642.45404.71621.79131.79134.75344.7534
H82.70152.18184.23271.10492.45403.14644.71624.75344.75341.79131.7913
H92.18773.29141.10594.63412.62293.55011.79134.75341.78405.11695.4189
H102.18773.29141.10594.63412.62293.55011.79134.75341.78405.41895.1169
H113.29142.18774.63411.10593.55012.62294.75341.79135.11695.41891.7840
H123.29142.18774.63411.10593.55012.62294.75341.79135.41895.11691.7840

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 124.667 C1 C2 H6 118.656
C1 C3 H7 110.638 C1 C3 H9 111.039
C1 C3 H10 111.039 C2 C1 C3 124.667
C2 C1 H5 118.656 C2 C4 H8 110.638
C2 C4 H11 111.039 C2 C4 H12 111.039
C3 C1 H5 116.677 C4 C2 H6 116.677
H7 C3 H9 108.240 H7 C3 H10 108.240
H8 C4 H11 108.240 H8 C4 H12 108.240
H9 C3 H10 107.520 H11 C4 H12 107.520
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability