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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-156.315088
Energy at 298.15K-156.322847
Nuclear repulsion energy115.536791
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 B3PW91/3-21G*
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 3143 3015 0.00      
2 A 3122 2995 0.00      
3 A 3038 2915 0.00      
4 A 1755 1683 0.00      
5 A 1547 1485 0.00      
6 A 1457 1398 0.00      
7 A 1370 1315 0.00      
8 A 1187 1139 0.00      
9 A 888 852 0.00      
10 A 512 491 0.00      
11 A 3089 2964 41.95      
12 A 1543 1481 20.06      
13 A 1103 1058 2.34      
14 A 1015 974 45.75      
15 A 248 238 5.03      
16 A 174 167 1.52      
17 A 3089 2964 0.00      
18 A 1544 1481 0.00      
19 A 1104 1059 0.00      
20 A 773 741 0.00      
21 A 223 214 0.00      
22 A 3154 3026 57.97      
23 A 3121 2994 13.29      
24 A 3038 2914 51.56      
25 A 1557 1493 21.82      
26 A 1457 1398 11.70      
27 A 1367 1311 2.01      
28 A 1073 1030 0.48      
29 A 1025 983 22.39      
30 A 284 273 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 23999.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23024.6 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 B3PW91/3-21G*
ABC
1.14979 0.12385 0.11669

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.667 0.000
C2 0.000 -0.667 0.000
C3 -1.239 1.525 0.000
C4 1.239 -1.525 0.000
H5 0.952 1.199 0.000
H6 -0.952 -1.199 0.000
H7 -2.145 0.908 0.000
H8 2.145 -0.908 0.000
H9 -1.265 2.176 0.885
H10 -1.265 2.176 -0.885
H11 1.265 -2.176 0.885
H12 1.265 -2.176 -0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33331.50672.51711.09112.09492.15832.66092.15872.15873.23473.2347
C21.33332.51711.50672.09491.09112.66092.15833.23473.23472.15872.1587
C31.50672.51713.92862.21482.73901.09594.16721.09901.09904.55464.5546
C42.51711.50673.92862.73902.21484.16721.09594.55464.55461.09901.0990
H51.09112.09492.21482.73903.06283.11062.42162.57902.57903.50343.5034
H62.09491.09112.73902.21483.06282.42163.11063.50343.50342.57902.5790
H72.15832.66091.09594.16723.11062.42164.65831.77891.77894.68194.6819
H82.66092.15834.16721.09592.42163.11064.65834.68194.68191.77891.7789
H92.15873.23471.09904.55462.57903.50341.77894.68191.76935.03385.3357
H102.15873.23471.09904.55462.57903.50341.77894.68191.76935.33575.0338
H113.23472.15874.55461.09903.50342.57904.68191.77895.03385.33571.7693
H123.23472.15874.55461.09903.50342.57904.68191.77895.33575.03381.7693

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 124.713 C1 C2 H6 119.219
C1 C3 H7 111.069 C1 C3 H9 110.920
C1 C3 H10 110.920 C2 C1 C3 124.713
C2 C1 H5 119.219 C2 C4 H8 111.069
C2 C4 H11 110.920 C2 C4 H12 110.920
C3 C1 H5 116.068 C4 C2 H6 116.068
H7 C3 H9 108.288 H7 C3 H10 108.288
H8 C4 H11 108.288 H8 C4 H12 108.288
H9 C3 H10 107.216 H11 C4 H12 107.216
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.198      
2 C -0.192      
3 H 0.198      
4 C -0.192      
5 H 0.216      
6 H 0.221      
7 H 0.221      
8 C -0.664      
9 H 0.216      
10 H 0.221      
11 H 0.221      
12 C -0.664      


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 -25.184 -0.131 0.000
y -0.131 -24.494 0.000
z 0.000 0.000 -28.036
Traceless
 xyz
x 1.080 -0.131 0.000
y -0.131 2.117 0.000
z 0.000 0.000 -3.197
Polar
3z2-r2-6.394
x2-y2-0.691
xy-0.131
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> 111.825
(<r2>)1/2 10.575