return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CCHCH3 (1,2-Butadiene)

using model chemistry: PBE1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-155.773046
Energy at 298.15K-155.778049
HF Energy-155.773046
Nuclear repulsion energy102.369457
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 PBE1PBE/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' 3178 3020 20.23      
2 A' 3168 3011 5.65      
3 A' 3163 3005 0.49      
4 A' 3065 2913 33.02      
5 A' 2105 2000 32.88      
6 A' 1532 1456 2.65      
7 A' 1498 1423 6.96      
8 A' 1430 1359 2.53      
9 A' 1382 1314 7.30      
10 A' 1173 1115 0.12      
11 A' 1108 1053 3.37      
12 A' 899 854 5.49      
13 A' 873 830 59.06      
14 A' 582 553 5.72      
15 A' 213 202 0.87      
16 A" 3243 3082 3.98      
17 A" 3128 2972 19.47      
18 A" 1510 1435 7.13      
19 A" 1069 1016 0.08      
20 A" 1033 981 0.01      
21 A" 904 859 17.84      
22 A" 543 516 5.37      
23 A" 353 336 5.42      
24 A" 172 163 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 18661.1 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 17733.6 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 PBE1PBE/6-31G*
ABC
1.15114 0.13980 0.13107

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.684 1.826 0.000
C2 0.000 0.713 0.000
C3 0.680 -0.403 0.000
C4 0.074 -1.779 0.000
H5 -0.981 2.311 0.928
H6 -0.981 2.311 -0.928
H7 1.770 -0.344 0.000
H8 -1.018 -1.729 0.000
H9 0.395 -2.346 -0.883
H10 0.395 -2.346 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.30632.61383.68331.08841.08843.27563.57074.39824.3982
C21.30631.30752.49272.09232.09232.06152.64593.20783.2078
C32.61381.30751.50303.31543.31541.09132.15472.15242.1524
C43.68332.49271.50304.32444.32442.22191.09301.09701.0970
H51.08842.09233.31544.32441.85563.93434.14575.18234.8561
H61.08842.09233.31544.32441.85563.93434.14574.85615.1823
H73.27562.06151.09132.22193.93433.93433.11362.58452.5845
H83.57072.64592.15471.09304.14574.14573.11361.77611.7761
H94.39823.20782.15241.09705.18234.85612.58451.77611.7650
H104.39823.20782.15241.09704.85615.18232.58451.77611.7650

picture of 1,2-Butadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.783 C2 C1 H5 121.526
C2 C1 H6 121.526 C2 C3 C4 124.834
C2 C3 H7 118.213 C3 C4 H8 111.214
C3 C4 H9 110.791 C3 C4 H10 110.791
C4 C3 H7 116.953 H5 C1 H6 116.948
H8 C4 H9 108.391 H8 C4 H10 108.391
H9 C4 H10 107.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.574      
2 C 0.314      
3 C -0.323      
4 C -0.549      
5 H 0.191      
6 H 0.191      
7 H 0.187      
8 H 0.192      
9 H 0.186      
10 H 0.186      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.058 -0.402 0.000 0.406
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.320 -1.656 0.000
y -1.656 -22.784 0.000
z 0.000 0.000 -25.048
Traceless
 xyz
x -0.404 -1.656 0.000
y -1.656 1.901 0.000
z 0.000 0.000 -1.496
Polar
3z2-r2-2.992
x2-y2-1.537
xy-1.656
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.420 -2.600 0.000
y -2.600 9.513 0.000
z 0.000 0.000 4.086


<r2> (average value of r2) Å2
<r2> 98.132
(<r2>)1/2 9.906