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: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-155.760867
Energy at 298.15K-155.765730
Nuclear repulsion energy101.436630
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3076 3058 15.17      
2 A' 3051 3033 3.78      
3 A' 3048 3031 3.94      
4 A' 2960 2943 35.35      
5 A' 2026 2014 31.96      
6 A' 1436 1428 2.97      
7 A' 1397 1389 9.43      
8 A' 1335 1327 2.29      
9 A' 1300 1293 6.46      
10 A' 1123 1116 0.25      
11 A' 1048 1042 2.45      
12 A' 864 859 6.53      
13 A' 811 806 47.49      
14 A' 553 550 5.88      
15 A' 202 201 0.99      
16 A" 3132 3114 2.73      
17 A" 3022 3005 15.82      
18 A" 1402 1394 6.01      
19 A" 1004 998 0.01      
20 A" 966 961 0.01      
21 A" 855 851 15.38      
22 A" 517 514 4.97      
23 A" 330 328 4.62      
24 A" 174 173 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 17815.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 17712.6 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 PBEPBE/cc-pVDZ
ABC
1.13553 0.13728 0.12881

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.687 1.844 0.000
C2 0.000 0.719 0.000
C3 0.682 -0.411 0.000
C4 0.073 -1.792 0.000
H5 -0.985 2.336 0.941
H6 -0.985 2.336 -0.941
H7 1.787 -0.348 0.000
H8 -1.032 -1.748 0.000
H9 0.401 -2.369 -0.892
H10 0.401 -2.369 0.892

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.31822.63833.71461.10281.10283.30493.60874.44134.4413
C21.31821.32012.51182.11432.11432.08092.67413.23863.2386
C32.63831.32011.50873.34843.34841.10632.17372.16912.1691
C43.71462.51181.50874.36404.36402.24041.10651.11121.1112
H51.10282.11433.34844.36401.88193.97114.19135.23574.9047
H61.10282.11433.34844.36401.88193.97114.19134.90475.2357
H73.30492.08091.10632.24043.97113.97113.14722.60732.6073
H83.60872.67412.17371.10654.19134.19133.14721.79821.7982
H94.44133.23862.16911.11125.23574.90472.60731.79821.7833
H104.44133.23862.16911.11124.90475.23572.60731.79821.7833

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 179.720 C2 C1 H5 121.436
C2 C1 H6 121.436 C2 C3 C4 125.098
C2 C3 H7 117.831 C3 C4 H8 111.518
C3 C4 H9 110.861 C3 C4 H10 110.861
C4 C3 H7 117.071 H5 C1 H6 117.128
H8 C4 H9 108.358 H8 C4 H10 108.358
H9 C4 H10 106.714
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.107      
2 C 0.100      
3 C -0.255      
4 C -0.011      
5 H 0.056      
6 H 0.056      
7 H 0.029      
8 H 0.032      
9 H 0.050      
10 H 0.050      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.062 -0.451 0.000 0.455
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.775 -1.609 0.000
y -1.609 -23.104 0.000
z 0.000 0.000 -25.407
Traceless
 xyz
x -0.519 -1.609 0.000
y -1.609 1.987 0.000
z 0.000 0.000 -1.468
Polar
3z2-r2-2.936
x2-y2-1.670
xy-1.609
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.977 -2.597 0.000
y -2.597 10.462 0.000
z 0.000 0.000 4.499


<r2> (average value of r2) Å2
<r2> 99.888
(<r2>)1/2 9.994