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 CH3CH2COOH (Propanoic Acid)

using model chemistry: PBEPBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-268.107359
Energy at 298.15K-268.114329
HF Energy-268.107359
Nuclear repulsion energy176.741511
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/6-31+G**
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' 3636 3594 41.77      
2 A' 3076 3041 17.70      
3 A' 2997 2963 21.60      
4 A' 2985 2951 11.48      
5 A' 1762 1742 277.73      
6 A' 1457 1441 11.36      
7 A' 1411 1395 17.39      
8 A' 1375 1359 3.90      
9 A' 1356 1340 56.51      
10 A' 1254 1240 4.33      
11 A' 1125 1112 201.38      
12 A' 1055 1043 89.18      
13 A' 990 979 3.08      
14 A' 796 787 10.45      
15 A' 589 582 14.36      
16 A' 453 447 21.19      
17 A' 241 238 2.73      
18 A" 3081 3046 17.47      
19 A" 3021 2986 2.75      
20 A" 1450 1434 9.14      
21 A" 1237 1223 0.02      
22 A" 1067 1055 0.02      
23 A" 785 776 16.46      
24 A" 646 639 87.81      
25 A" 504 498 23.19      
26 A" 203 201 0.00      
27 A" 29 29 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19290.5 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 19070.6 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/6-31+G**
ABC
0.33203 0.12536 0.09420

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 -0.598 -0.819 0.000
C3 0.453 -1.929 0.000
O4 -0.974 1.536 0.000
O5 1.191 0.850 0.000
H6 -1.266 -0.891 0.878
H7 -1.266 -0.891 -0.878
H8 -0.035 -2.917 0.000
H9 1.101 -1.862 -0.887
H10 1.101 -1.862 0.887
H11 -0.501 2.396 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51492.54271.37001.22322.12492.12493.49012.81592.81591.8904
C21.51491.52852.38492.44681.10551.10552.17242.18242.18243.2163
C32.54271.52853.74752.87552.19182.19181.10151.10111.10114.4289
O41.37002.38493.74752.27202.59682.59684.55114.07964.07960.9816
O51.22322.44682.87552.27203.13673.13673.96132.85472.85472.2922
H62.12491.10552.19182.59683.13671.75552.52863.10882.55923.4865
H72.12491.10552.19182.59683.13671.75552.52862.55923.10883.4865
H83.49012.17241.10154.55113.96132.52862.52861.78631.78635.3333
H92.81592.18241.10114.07962.85473.10882.55921.78631.77424.6351
H102.81592.18241.10114.07962.85472.55923.10881.78631.77424.6351
H111.89043.21634.42890.98162.29223.48653.48655.33334.63514.6351

picture of Propanoic Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.332 C1 C2 H6 107.336
C1 C2 H7 107.336 C1 O4 H11 105.823
C2 C1 O4 111.418 C2 C1 O5 126.328
C2 C3 H8 110.320 C2 C3 H9 111.144
C2 C3 H10 111.144 C3 C2 H6 111.624
C3 C2 H7 111.624 O4 C1 O5 122.254
H6 C2 H7 105.124 H8 C3 H9 108.382
H8 C3 H10 108.382 H9 C3 H10 107.351
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.323      
2 C -0.205      
3 C -0.601      
4 O -0.395      
5 O -0.422      
6 H 0.200      
7 H 0.200      
8 H 0.167      
9 H 0.188      
10 H 0.188      
11 H 0.356      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.533 -0.459 0.000 1.601
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.595 -0.555 0.000
y -0.555 -25.823 0.000
z 0.000 0.000 -30.082
Traceless
 xyz
x -7.642 -0.555 0.000
y -0.555 7.015 0.000
z 0.000 0.000 0.627
Polar
3z2-r21.254
x2-y2-9.772
xy-0.555
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.244 -0.161 0.000
y -0.161 7.755 0.000
z 0.000 0.000 5.132


<r2> (average value of r2) Å2
<r2> 126.121
(<r2>)1/2 11.230