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

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 C2h 1Ag
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-157.194013
Energy at 298.15K-157.201751
Nuclear repulsion energy115.938690
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 3165 3011 0.00      
2 A 3149 2996 0.00      
3 A 3055 2906 0.00      
4 A 1785 1698 0.00      
5 A 1503 1430 0.00      
6 A 1428 1359 0.00      
7 A 1340 1275 0.00      
8 A 1180 1123 0.00      
9 A 888 845 0.00      
10 A 504 480 0.00      
11 A 3116 2964 46.54      
12 A 1494 1422 13.64      
13 A 1074 1022 0.18      
14 A 1013 964 30.76      
15 A 249 237 3.52      
16 A 178 169 1.22      
17 A 3116 2965 0.00      
18 A 1495 1422 0.00      
19 A 1071 1019 0.00      
20 A 758 721 0.00      
21 A 232 220 0.00      
22 A 3170 3017 75.88      
23 A 3148 2995 12.19      
24 A 3054 2906 66.36      
25 A 1512 1439 16.72      
26 A 1428 1358 3.36      
27 A 1336 1271 4.57      
28 A 1103 1050 2.52      
29 A 992 944 16.38      
30 A 279 266 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 23905.7 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 22746.3 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 mPW1PW91/6-31G**
ABC
1.16462 0.12454 0.11738

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

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 -1.222 1.528 0.000
C4 1.222 -1.528 0.000
H5 0.958 1.187 0.000
H6 -0.958 -1.187 0.000
H7 -2.135 0.928 0.000
H8 2.135 -0.928 0.000
H9 -1.248 2.183 0.878
H10 -1.248 2.183 -0.878
H11 1.248 -2.183 0.878
H12 1.248 -2.183 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33261.49532.51161.09022.08632.15122.66482.15112.15113.23173.2317
C21.33262.51161.49532.08631.09022.66482.15123.23173.23172.15112.1511
C31.49532.51163.91302.20612.72801.09264.15971.09561.09564.54304.5430
C42.51161.49533.91302.72802.20614.15971.09264.54304.54301.09561.0956
H51.09022.08632.20612.72803.05073.10372.42102.57402.57403.49453.4945
H62.08631.09022.72802.20613.05072.42103.10373.49453.49452.57402.5740
H72.15122.66481.09264.15973.10372.42104.65631.76991.76994.67884.6788
H82.66482.15124.15971.09262.42103.10374.65634.67884.67881.76991.7699
H92.15113.23171.09564.54302.57403.49451.76994.67881.75635.02815.3261
H102.15113.23171.09564.54302.57403.49451.76994.67881.75635.32615.0281
H113.23172.15114.54301.09563.49452.57404.67881.76995.02815.32611.7563
H123.23172.15114.54301.09563.49452.57404.67881.76995.32615.02811.7563

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 125.188 C1 C2 H6 118.549
C1 C3 H7 111.510 C1 C3 H9 111.316
C1 C3 H10 111.316 C2 C1 C3 125.188
C2 C1 H5 118.549 C2 C4 H8 111.510
C2 C4 H11 111.316 C2 C4 H12 111.316
C3 C1 H5 116.264 C4 C2 H6 116.264
H7 C3 H9 107.965 H7 C3 H10 107.965
H8 C4 H11 107.965 H8 C4 H12 107.965
H9 C3 H10 106.551 H11 C4 H12 106.551
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 -0.094      
2 C -0.094      
3 C -0.431      
4 C -0.431      
5 H 0.109      
6 H 0.109      
7 H 0.135      
8 H 0.135      
9 H 0.141      
10 H 0.141      
11 H 0.141      
12 H 0.141      


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 -25.235 -0.071 0.000
y -0.071 -24.529 0.000
z 0.000 0.000 -27.497
Traceless
 xyz
x 0.778 -0.071 0.000
y -0.071 1.837 0.000
z 0.000 0.000 -2.615
Polar
3z2-r2-5.231
x2-y2-0.706
xy-0.071
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> 111.208
(<r2>)1/2 10.546