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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (2-Butene, (E)-)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at G3B3
 hartrees
Energy at 0K-157.060280
Energy at 298.15K-157.053728
Nuclear repulsion energy 
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 B3LYP/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 3132 3007 0.00      
2 A 3112 2989 0.00      
3 A 3029 2909 0.00      
4 A 1765 1695 0.00      
5 A 1520 1459 0.00      
6 A 1444 1387 0.00      
7 A 1346 1293 0.00      
8 A 1179 1132 0.00      
9 A 884 849 0.00      
10 A 501 481 0.00      
11 A 3074 2952 59.76      
12 A 1510 1450 11.21      
13 A 1083 1040 0.15      
14 A 1011 971 25.27      
15 A 246 236 2.97      
16 A 178 171 1.07      
17 A 3074 2952 0.00      
18 A 1510 1450 0.00      
19 A 1076 1034 0.00      
20 A 755 725 0.00      
21 A 232 223 0.00      
22 A 3140 3015 85.36      
23 A 3110 2987 19.21      
24 A 3029 2908 74.71      
25 A 1527 1467 13.57      
26 A 1442 1385 2.59      
27 A 1346 1292 5.95      
28 A 1086 1043 1.34      
29 A 999 959 14.36      
30 A 279 268 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 23808.3 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 22863.1 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 B3LYP/6-31G*
ABC
1.15986 0.12346 0.11640

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.668 0.000
C2 0.000 -0.668 0.000
C3 -1.226 1.536 0.000
C4 1.226 -1.536 0.000
H5 0.958 1.191 0.000
H6 -0.958 -1.191 0.000
H7 -2.143 0.936 0.000
H8 2.143 -0.936 0.000
H9 -1.252 2.192 0.880
H10 -1.252 2.192 -0.880
H11 1.252 -2.192 0.880
H12 1.252 -2.192 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33541.50242.52171.09212.09162.15982.67662.16022.16023.24383.2438
C21.33542.52171.50242.09161.09212.67662.15983.24383.24382.16022.1602
C31.50242.52173.93052.21172.74021.09554.17881.09871.09874.56234.5623
C42.52171.50243.93052.74022.21174.17881.09554.56234.56231.09871.0987
H51.09212.09162.21172.74023.05803.11192.43502.58092.58093.50873.5087
H62.09161.09212.74022.21173.05802.43503.11193.50873.50872.58092.5809
H72.15982.67661.09554.17883.11192.43504.67711.77441.77444.69954.6995
H82.67662.15984.17881.09552.43503.11194.67714.69954.69951.77441.7744
H92.16023.24381.09874.56232.58093.50871.77444.69951.76095.04905.3473
H102.16023.24381.09874.56232.58093.50871.77444.69951.76095.34735.0490
H113.24382.16024.56231.09873.50872.58094.69951.77445.04905.34731.7609
H123.24382.16024.56231.09873.50872.58094.69951.77445.34735.04901.7609

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 125.290 C1 C2 H6 118.653
C1 C3 H7 111.516 C1 C3 H9 111.351
C1 C3 H10 111.351 C2 C1 C3 125.290
C2 C1 H5 118.653 C2 C4 H8 111.516
C2 C4 H11 111.351 C2 C4 H12 111.351
C3 C1 H5 116.057 C4 C2 H6 116.057
H7 C3 H9 107.940 H7 C3 H10 107.940
H8 C4 H11 107.940 H8 C4 H12 107.940
H9 C3 H10 106.521 H11 C4 H12 106.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.115 0.110   -0.114
2 C -0.084 -0.157   -0.100
3 H 0.115 0.110   -0.301
4 C -0.084 -0.158   -0.291
5 H 0.150 0.023   0.121
6 H 0.152 0.028   0.119
7 H 0.152 0.028   0.090
8 C -0.485 -0.031   0.086
9 H 0.150 0.023   0.100
10 H 0.152 0.028   0.100
11 H 0.152 0.028   0.096
12 C -0.485 -0.031   0.096


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 0.000 0.000 0.000 0.000
AIM        
ESP -0.016 -0.014 0.000 0.021


Electric Quadrupole moment
Quadrupole components in D Å


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> 112.162
(<r2>)1/2 10.591