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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-157.180962
Energy at 298.15K-157.188697
Nuclear repulsion energy117.568623
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 mPW1PW91/6-31G*
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 3194 3029 61.49      
2 A 3171 3007 7.64      
3 A 3065 2907 13.33      
4 A 1780 1688 3.46      
5 A 1529 1450 6.62      
6 A 1449 1374 5.05      
7 A 1311 1243 0.09      
8 A 1041 987 0.73      
9 A 891 845 0.64      
10 A 292 277 0.00      
11 A 3117 2956 0.00      
12 A 1513 1435 0.00      
13 A 1073 1017 0.00      
14 A 1018 965 0.00      
15 A 398 377 0.00      
16 A 147 140 0.00      
17 A 3118 2956 45.05      
18 A 1518 1440 12.78      
19 A 1081 1025 0.95      
20 A 704 667 38.86      
21 A 131 124 1.03      
22 A 3174 3010 20.54      
23 A 3157 2994 2.26      
24 A 3062 2904 43.12      
25 A 1521 1442 3.56      
26 A 1467 1391 8.14      
27 A 1412 1339 2.96      
28 A 1175 1115 1.05      
29 A 1004 952 15.51      
30 A 571 542 7.70      

Unscaled Zero Point Vibrational Energy (zpe) 24041.5 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 22798.6 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 mPW1PW91/6-31G*
ABC
0.54667 0.16970 0.13600

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.668 0.662
C2 0.000 -0.668 0.662
C3 0.000 1.585 -0.520
C4 0.000 -1.585 -0.520
H5 0.000 1.167 1.630
H6 0.000 -1.167 1.630
H7 0.000 1.051 -1.473
H8 0.000 -1.051 -1.473
H9 -0.879 2.241 -0.505
H10 0.879 2.241 -0.505
H11 0.879 -2.241 -0.505
H12 -0.879 -2.241 -0.505

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33561.49652.54441.08922.07442.16902.74092.14682.14683.25503.2550
C21.33562.54441.49652.07441.08922.74092.16903.25503.25502.14682.1468
C31.49652.54443.17042.19093.49261.09192.80321.09661.09663.92583.9258
C42.54441.49653.17043.49262.19092.80321.09193.92583.92581.09661.0966
H51.08922.07442.19093.49262.33363.10523.81432.54652.54654.11634.1163
H62.07441.08923.49262.19092.33363.81433.10524.11634.11632.54652.5465
H72.16902.74091.09192.80323.10523.81432.10251.76761.76763.54233.5423
H82.74092.16902.80321.09193.81433.10522.10253.54233.54231.76761.7676
H92.14683.25501.09663.92582.54654.11631.76763.54231.75764.81424.4819
H102.14683.25501.09663.92582.54654.11631.76763.54231.75764.48194.8142
H113.25502.14683.92581.09664.11632.54653.54231.76764.81424.48191.7576
H123.25502.14683.92581.09664.11632.54653.54231.76764.48194.81421.7576

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 127.806 C1 C2 H6 117.265
C1 C3 H7 112.919 C1 C3 H9 110.817
C1 C3 H10 110.817 C2 C1 C3 127.806
C2 C1 H5 117.265 C2 C4 H8 112.919
C2 C4 H11 110.817 C2 C4 H12 110.817
C3 C1 H5 114.929 C4 C2 H6 114.929
H7 C3 H9 107.743 H7 C3 H10 107.743
H8 C4 H11 107.743 H8 C4 H12 107.743
H9 C3 H10 106.524 H11 C4 H12 106.524
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.129      
2 C -0.129      
3 C -0.565      
4 C -0.565      
5 H 0.154      
6 H 0.154      
7 H 0.177      
8 H 0.177      
9 H 0.182      
10 H 0.182      
11 H 0.182      
12 H 0.182      


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 -0.180 0.180
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.511 0.000 0.000
y 0.000 -24.448 0.000
z 0.000 0.000 -25.453
Traceless
 xyz
x -2.561 0.000 0.000
y 0.000 2.034 0.000
z 0.000 0.000 0.527
Polar
3z2-r21.053
x2-y2-3.063
xy0.000
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> 98.913
(<r2>)1/2 9.946