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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-156.328986
Energy at 298.15K-156.336782
Nuclear repulsion energy115.724500
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 mPW1PW91/3-21G
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 3165 3021 0.00      
2 A 3142 2999 0.00      
3 A 3057 2918 0.00      
4 A 1768 1688 0.00      
5 A 1556 1485 0.00      
6 A 1466 1399 0.00      
7 A 1377 1315 0.00      
8 A 1195 1141 0.00      
9 A 894 853 0.00      
10 A 516 492 0.00      
11 A 3110 2969 39.13      
12 A 1551 1481 20.83      
13 A 1109 1059 2.24      
14 A 1022 975 47.07      
15 A 250 239 5.16      
16 A 175 167 1.47      
17 A 3110 2969 0.00      
18 A 1552 1481 0.00      
19 A 1112 1062 0.00      
20 A 779 744 0.00      
21 A 225 215 0.00      
22 A 3175 3031 53.36      
23 A 3140 2998 13.73      
24 A 3056 2918 49.02      
25 A 1565 1494 22.56      
26 A 1466 1399 12.70      
27 A 1374 1311 1.87      
28 A 1082 1033 0.39      
29 A 1031 984 22.60      
30 A 287 274 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 24151.8 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 23055.3 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 mPW1PW91/3-21G
ABC
1.15191 0.12432 0.11711

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.666 0.000
C2 0.000 -0.666 0.000
C3 -1.239 1.520 0.000
C4 1.239 -1.520 0.000
H5 0.950 1.198 0.000
H6 -0.950 -1.198 0.000
H7 -2.141 0.902 0.000
H8 2.141 -0.902 0.000
H9 -1.266 2.170 0.883
H10 -1.266 2.170 -0.883
H11 1.266 -2.170 0.883
H12 1.266 -2.170 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33141.50462.51221.08932.09192.15422.65352.15582.15583.22893.2289
C21.33142.51221.50462.09191.08932.65352.15423.22893.22892.15582.1558
C31.50462.51223.92152.21252.73321.09424.15781.09721.09724.54674.5467
C42.51221.50463.92152.73322.21254.15781.09424.54674.54671.09721.0972
H51.08932.09192.21252.73323.05833.10582.41372.57682.57683.49633.4963
H62.09191.08932.73322.21253.05832.41373.10583.49633.49632.57682.5768
H72.15422.65351.09424.15783.10582.41374.64661.77631.77634.67204.6720
H82.65352.15424.15781.09422.41373.10584.64664.67204.67201.77631.7763
H92.15583.22891.09724.54672.57683.49631.77634.67201.76685.02525.3268
H102.15583.22891.09724.54672.57683.49631.77634.67201.76685.32685.0252
H113.22892.15584.54671.09723.49632.57684.67201.77635.02525.32681.7668
H123.22892.15584.54671.09723.49632.57684.67201.77635.32685.02521.7668

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 124.598 C1 C2 H6 119.249
C1 C3 H7 110.985 C1 C3 H9 110.936
C1 C3 H10 110.936 C2 C1 C3 124.598
C2 C1 H5 119.249 C2 C4 H8 110.985
C2 C4 H11 110.936 C2 C4 H12 110.936
C3 C1 H5 116.153 C4 C2 H6 116.153
H7 C3 H9 108.299 H7 C3 H10 108.299
H8 C4 H11 108.299 H8 C4 H12 108.299
H9 C3 H10 107.250 H11 C4 H12 107.250
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.198      
2 C -0.198      
3 C -0.673      
4 C -0.673      
5 H 0.203      
6 H 0.203      
7 H 0.219      
8 H 0.219      
9 H 0.225      
10 H 0.225      
11 H 0.225      
12 H 0.225      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.179 -0.121 0.000
y -0.121 -24.490 0.000
z 0.000 0.000 -28.054
Traceless
 xyz
x 1.093 -0.121 0.000
y -0.121 2.126 0.000
z 0.000 0.000 -3.219
Polar
3z2-r2-6.438
x2-y2-0.689
xy-0.121
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 111.479
(<r2>)1/2 10.558