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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-156.753376
Energy at 298.15K-156.761086
HF Energy-156.162745
Nuclear repulsion energy116.026079
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/TZVP
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 3180 3015 0.00      
2 A 3168 3003 0.00      
3 A 3074 2914 0.00      
4 A 1739 1648 0.00      
5 A 1519 1440 0.00      
6 A 1439 1364 0.00      
7 A 1344 1274 0.00      
8 A 1187 1125 0.00      
9 A 890 843 0.00      
10 A 508 481 0.00      
11 A 3147 2983 38.24      
12 A 1490 1413 13.45      
13 A 1084 1027 1.94      
14 A 977 926 40.36      
15 A 245 232 3.77      
16 A 167 158 1.29      
17 A 3148 2984 0.00      
18 A 1491 1413 0.00      
19 A 1061 1006 0.00      
20 A 706 669 0.00      
21 A 221 209 0.00      
22 A 3187 3021 67.30      
23 A 3167 3002 13.00      
24 A 3074 2914 57.91      
25 A 1525 1446 18.01      
26 A 1437 1362 4.41      
27 A 1343 1273 3.92      
28 A 1102 1045 2.17      
29 A 1001 949 9.62      
30 A 285 270 0.81      

Unscaled Zero Point Vibrational Energy (zpe) 23952.0 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 22704.1 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/TZVP
ABC
1.15752 0.12496 0.11769

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.328 0.582 0.000
C2 -0.328 -0.582 0.000
C3 -0.328 1.927 0.000
C4 0.328 -1.927 0.000
H5 1.416 0.567 0.000
H6 -1.416 -0.567 0.000
H7 -1.414 1.832 0.000
H8 1.414 -1.832 0.000
H9 -0.037 2.506 0.879
H10 -0.037 2.506 -0.879
H11 0.037 -2.506 0.879
H12 0.037 -2.506 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33551.49712.50891.08762.08802.14432.64642.14732.14733.22373.2237
C21.33552.50891.49712.08801.08762.64642.14433.22373.22372.14732.1473
C31.49712.50893.91002.21142.72111.09034.14311.09201.09204.53474.5347
C42.50891.49713.91002.72112.21144.14311.09034.53474.53471.09201.0920
H51.08762.08802.21142.72113.04983.09942.39882.57772.57773.48113.4811
H62.08801.08762.72112.21143.04982.39883.09943.48113.48112.57772.5777
H72.14432.64641.09034.14313.09942.39884.62821.76731.76734.65824.6582
H82.64642.14434.14311.09032.39883.09944.62824.65824.65821.76731.7673
H92.14733.22371.09204.53472.57773.48111.76734.65821.75795.01335.3126
H102.14733.22371.09204.53472.57773.48111.76734.65821.75795.31265.0133
H113.22372.14734.53471.09203.48112.57774.65821.76735.01335.31261.7579
H123.22372.14734.53471.09203.48112.57774.65821.76735.31265.01331.7579

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 124.581 C1 C2 H6 118.662
C1 C3 H7 110.964 C1 C3 H9 111.103
C1 C3 H10 111.103 C2 C1 C3 124.581
C2 C1 H5 118.662 C2 C4 H8 110.964
C2 C4 H11 111.103 C2 C4 H12 111.103
C3 C1 H5 116.757 C4 C2 H6 116.757
H7 C3 H9 108.158 H7 C3 H10 108.158
H8 C4 H11 108.158 H8 C4 H12 108.158
H9 C3 H10 107.204 H11 C4 H12 107.204
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability