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All results from a given calculation for CH3CH2COOH (Propanoic Acid)

using model chemistry: PBE1PBE/3-21G*

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/3-21G*
 hartrees
Energy at 0K-266.616704
Energy at 298.15K-266.623836
HF Energy-266.616704
Nuclear repulsion energy177.513366
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/3-21G*
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' 3545 3402 20.14      
2 A' 3167 3040 13.88      
3 A' 3089 2965 8.81      
4 A' 3088 2963 11.78      
5 A' 1817 1744 173.80      
6 A' 1559 1496 12.71      
7 A' 1509 1448 28.69      
8 A' 1469 1410 20.62      
9 A' 1425 1368 52.03      
10 A' 1348 1294 0.51      
11 A' 1157 1110 157.04      
12 A' 1094 1050 132.26      
13 A' 1037 995 4.59      
14 A' 821 788 11.09      
15 A' 614 589 17.11      
16 A' 469 450 30.06      
17 A' 253 243 3.03      
18 A" 3168 3040 14.14      
19 A" 3124 2998 0.56      
20 A" 1558 1496 10.42      
21 A" 1319 1266 0.36      
22 A" 1146 1100 0.03      
23 A" 839 805 24.19      
24 A" 670 643 121.93      
25 A" 534 512 34.36      
26 A" 193 186 0.00      
27 A" 39 38 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20024.7 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 19219.7 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/3-21G*
ABC
0.32984 0.12873 0.09589

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.557 0.000
C2 -0.613 -0.817 0.000
C3 0.469 -1.893 0.000
O4 -0.980 1.519 0.000
O5 1.193 0.827 0.000
H6 -1.266 -0.895 0.879
H7 -1.266 -0.895 -0.879
H8 0.024 -2.893 0.000
H9 1.108 -1.790 -0.883
H10 1.108 -1.790 0.883
H11 -0.543 2.412 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50462.49461.37401.22292.11682.11683.44982.74102.74101.9332
C21.50461.52632.36532.44241.09751.09752.17142.16512.16513.2300
C32.49461.52633.70792.81502.18632.18631.09431.09441.09444.4228
O41.37402.36533.70792.28052.58492.58494.52534.01144.01140.9937
O51.22292.44242.81502.28053.12733.12733.89942.76322.76322.3506
H62.11681.09752.18632.58493.12731.75822.53573.08852.53683.4969
H72.11681.09752.18632.58493.12731.75822.53572.53683.08853.4969
H83.44982.17141.09434.52533.89942.53572.53571.78061.78065.3352
H92.74102.16511.09444.01142.76323.08852.53681.78061.76534.6002
H102.74102.16511.09444.01142.76322.53683.08851.78061.76534.6002
H111.93323.23004.42280.99372.35063.49693.49695.33524.60024.6002

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 110.778 C1 C2 H6 107.858
C1 C2 H7 107.858 C1 O4 H11 108.398
C2 C1 O4 110.429 C2 C1 O5 126.830
C2 C3 H8 110.830 C2 C3 H9 110.319
C2 C3 H10 110.319 C3 C2 H6 111.831
C3 C2 H7 111.831 O4 C1 O5 122.741
H6 C2 H7 106.459 H8 C3 H9 108.890
H8 C3 H10 108.890 H9 C3 H10 107.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.659      
2 C -0.557      
3 C -0.623      
4 O -0.579      
5 O -0.492      
6 H 0.265      
7 H 0.265      
8 H 0.217      
9 H 0.234      
10 H 0.234      
11 H 0.378      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.297 -0.056 0.000 1.298
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.777 -0.416 0.000
y -0.416 -24.383 0.000
z 0.000 0.000 -29.093
Traceless
 xyz
x -8.039 -0.416 0.000
y -0.416 7.552 0.000
z 0.000 0.000 0.487
Polar
3z2-r20.974
x2-y2-10.394
xy-0.416
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.343 -0.111 0.000
y -0.111 5.897 0.000
z 0.000 0.000 3.617


<r2> (average value of r2) Å2
<r2> 123.590
(<r2>)1/2 11.117