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: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-268.396627
Energy at 298.15K-268.403741
HF Energy-268.396627
Nuclear repulsion energy177.762036
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' 3687 3541 41.23      
2 A' 3137 3012 23.77      
3 A' 3068 2946 19.62      
4 A' 3054 2933 12.95      
5 A' 1850 1776 251.54      
6 A' 1531 1470 9.64      
7 A' 1492 1433 11.97      
8 A' 1447 1390 2.83      
9 A' 1426 1370 47.61      
10 A' 1327 1274 2.35      
11 A' 1185 1138 245.64      
12 A' 1095 1052 57.72      
13 A' 1019 978 1.24      
14 A' 821 788 10.91      
15 A' 613 589 20.62      
16 A' 466 447 20.67      
17 A' 253 242 2.79      
18 A" 3144 3019 23.44      
19 A" 3083 2961 5.96      
20 A" 1526 1465 5.64      
21 A" 1295 1244 0.04      
22 A" 1122 1078 0.44      
23 A" 820 787 19.70      
24 A" 677 650 98.15      
25 A" 521 500 20.01      
26 A" 213 204 0.01      
27 A" 37 36 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19953.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 19161.0 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
0.33696 0.12653 0.09521

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 -0.602 -0.816 0.000
C3 0.453 -1.920 0.000
O4 -0.963 1.532 0.000
O5 1.181 0.840 0.000
H6 -1.263 -0.890 0.873
H7 -1.263 -0.890 -0.873
H8 -0.026 -2.905 0.000
H9 1.096 -1.848 -0.882
H10 1.096 -1.848 0.882
H11 -0.490 2.385 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51382.53401.35861.21102.12112.12113.47802.80002.80001.8776
C21.51381.52702.37522.43351.09781.09782.16702.17392.17393.2034
C32.53401.52703.73082.85492.18352.18351.09481.09401.09404.4077
O41.35862.37523.73082.25252.59202.59204.53454.05444.05440.9757
O51.21102.43352.85492.25253.11963.11963.93472.83042.83042.2763
H62.12111.09782.18352.59203.11961.74612.52053.09252.54633.4771
H72.12111.09782.18352.59203.11961.74612.52052.54633.09253.4771
H83.47802.16701.09484.53453.93472.52052.52051.77571.77575.3107
H92.80002.17391.09404.05442.83043.09252.54631.77571.76374.6061
H102.80002.17391.09404.05442.83042.54633.09251.77571.76374.6061
H111.87763.20344.40770.97572.27633.47713.47715.31074.60614.6061

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 112.885 C1 C2 H6 107.557
C1 C2 H7 107.557 C1 O4 H11 105.929
C2 C1 O4 111.452 C2 C1 O5 126.178
C2 C3 H8 110.403 C2 C3 H9 111.003
C2 C3 H10 111.003 C3 C2 H6 111.539
C3 C2 H7 111.539 O4 C1 O5 122.370
H6 C2 H7 105.367 H8 C3 H9 108.443
H8 C3 H10 108.443 H9 C3 H10 107.437
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 C 0.575      
2 C -0.344      
3 C -0.436      
4 O -0.569      
5 O -0.460      
6 H 0.177      
7 H 0.177      
8 H 0.145      
9 H 0.164      
10 H 0.164      
11 H 0.408      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.434 -0.234 0.000 1.453
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.351 -0.477 0.000
y -0.477 -24.948 0.000
z 0.000 0.000 -29.058
Traceless
 xyz
x -7.348 -0.477 0.000
y -0.477 6.756 0.000
z 0.000 0.000 0.592
Polar
3z2-r21.185
x2-y2-9.403
xy-0.477
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.813 -0.086 0.000
y -0.086 6.397 0.000
z 0.000 0.000 4.137


<r2> (average value of r2) Å2
<r2> 124.337
(<r2>)1/2 11.151