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

using model chemistry: MP2=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-156.415850
Energy at 298.15K-156.423491
HF Energy-156.046092
Nuclear repulsion energy116.293993
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/6-31G
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 3177 3018 75.77      
2 A 3156 2999 3.82      
3 A 3055 2903 15.18      
4 A 1723 1637 1.59      
5 A 1574 1496 5.81      
6 A 1496 1422 6.78      
7 A 1345 1278 0.24      
8 A 1067 1013 1.17      
9 A 881 837 0.46      
10 A 302 287 0.02      
11 A 3117 2961 0.00      
12 A 1554 1476 0.00      
13 A 1111 1056 0.00      
14 A 1005 955 0.00      
15 A 383 364 0.00      
16 A 98 93 0.00      
17 A 3117 2962 56.49      
18 A 1560 1482 11.52      
19 A 1126 1069 1.56      
20 A 715 680 41.65      
21 A 94 90 0.65      
22 A 3153 2996 31.85      
23 A 3138 2981 0.98      
24 A 3052 2899 36.84      
25 A 1568 1490 4.08      
26 A 1486 1412 5.31      
27 A 1470 1396 1.59      
28 A 1195 1135 1.71      
29 A 1011 961 8.49      
30 A 585 556 5.57      

Unscaled Zero Point Vibrational Energy (zpe) 24155.9 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 22950.5 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/6-31G
ABC
0.53369 0.16563 0.13270

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.678 0.673
C2 0.000 -0.678 0.673
C3 0.000 1.606 -0.528
C4 0.000 -1.606 -0.528
H5 0.000 1.184 1.643
H6 0.000 -1.184 1.643
H7 0.000 1.056 -1.477
H8 0.000 -1.056 -1.477
H9 -0.886 2.259 -0.517
H10 0.886 2.259 -0.517
H11 0.886 -2.259 -0.517
H12 -0.886 -2.259 -0.517

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.35661.51772.58101.09382.10002.18332.76272.16792.16793.29063.2906
C21.35662.58101.51772.10001.09382.76272.18333.29063.29062.16792.1679
C31.51772.58103.21272.21123.53551.09722.82691.10051.10053.96543.9654
C42.58101.51773.21273.53552.21122.82691.09723.96543.96541.10051.1005
H51.09382.10002.21123.53552.36893.12253.84122.56982.56984.16004.1600
H62.10001.09383.53552.21122.36893.84123.12254.16004.16002.56982.5698
H72.18332.76271.09722.82693.12253.84122.11271.77571.77573.56343.5634
H82.76272.18332.82691.09723.84123.12252.11273.56343.56341.77571.7757
H92.16793.29061.10053.96542.56984.16001.77573.56341.77254.85284.5175
H102.16793.29061.10053.96542.56984.16001.77573.56341.77254.51754.8528
H113.29062.16793.96541.10054.16002.56983.56341.77574.85284.51751.7725
H123.29062.16793.96541.10054.16002.56983.56341.77574.51754.85281.7725

picture of 2-Butene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.698 C1 C2 H6 117.566
C1 C3 H7 112.218 C1 C3 H9 110.775
C1 C3 H10 110.775 C2 C1 C3 127.698
C2 C1 H5 117.566 C2 C4 H8 112.218
C2 C4 H11 110.775 C2 C4 H12 110.775
C3 C1 H5 114.736 C4 C2 H6 114.736
H7 C3 H9 107.798 H7 C3 H10 107.798
H8 C4 H11 107.798 H8 C4 H12 107.798
H9 C3 H10 107.279 H11 C4 H12 107.279
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability