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

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-265.356788
Energy at 298.15K-265.364200
HF Energy-265.356788
Nuclear repulsion energy178.732011
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 HF/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' 3871 3494 66.45      
2 A' 3281 2961 21.54      
3 A' 3229 2915 4.27      
4 A' 3219 2905 21.17      
5 A' 1963 1771 254.41      
6 A' 1668 1506 10.42      
7 A' 1624 1466 26.42      
8 A' 1589 1434 12.57      
9 A' 1527 1378 59.83      
10 A' 1442 1302 11.53      
11 A' 1243 1122 226.68      
12 A' 1181 1066 132.59      
13 A' 1063 959 5.20      
14 A' 859 776 9.24      
15 A' 662 598 29.43      
16 A' 497 449 32.00      
17 A' 271 245 3.13      
18 A" 3290 2969 21.85      
19 A" 3258 2940 0.16      
20 A" 1669 1506 7.67      
21 A" 1422 1284 0.61      
22 A" 1244 1123 1.44      
23 A" 904 816 29.80      
24 A" 683 616 151.41      
25 A" 560 506 54.02      
26 A" 217 196 0.00      
27 A" 73 66 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 21253.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19183.6 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 HF/3-21G*
ABC
0.33948 0.12848 0.09648

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.560 0.000
C2 -0.605 -0.814 0.000
C3 0.474 -1.900 0.000
O4 -0.966 1.515 0.000
O5 1.171 0.834 0.000
H6 -1.248 -0.890 0.870
H7 -1.248 -0.890 -0.870
H8 0.021 -2.884 0.000
H9 1.106 -1.808 -0.874
H10 1.106 -1.808 0.874
H11 -0.590 2.407 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50112.50561.35871.20232.10102.10103.44382.75622.75621.9393
C21.50111.53122.35692.42231.08411.08412.16242.16302.16303.2213
C32.50561.53123.70682.82172.17772.17771.08281.08221.08224.4372
O41.35872.35693.70682.24302.57252.57254.50834.01304.01300.9685
O51.20232.42232.82172.24303.09443.09443.89142.78442.78442.3610
H62.10101.08412.17772.57253.09441.73922.51843.06962.52613.4727
H72.10101.08412.17772.57253.09441.73922.51842.52613.06963.4727
H83.44382.16241.08284.50833.89142.51842.51841.75941.75945.3263
H92.75622.16301.08224.01302.78443.06962.52611.75941.74854.6274
H102.75622.16301.08224.01302.78442.52613.06961.75941.74854.6274
H111.93933.22134.43720.96852.36103.47273.47275.32634.62744.6274

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 111.440 C1 C2 H6 107.630
C1 C2 H7 107.630 C1 O4 H11 111.779
C2 C1 O4 110.905 C2 C1 O5 126.935
C2 C3 H8 110.462 C2 C3 H9 110.541
C2 C3 H10 110.541 C3 C2 H6 111.611
C3 C2 H7 111.611 O4 C1 O5 122.160
H6 C2 H7 106.672 H8 C3 H9 108.722
H8 C3 H10 108.722 H9 C3 H10 107.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.872      
2 C -0.555      
3 C -0.579      
4 O -0.719      
5 O -0.607      
6 H 0.262      
7 H 0.262      
8 H 0.207      
9 H 0.224      
10 H 0.224      
11 H 0.410      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.476 -0.326 0.000 1.512
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.083 -0.531 0.000
y -0.531 -24.862 0.000
z 0.000 0.000 -29.270
Traceless
 xyz
x -9.017 -0.531 0.000
y -0.531 7.815 0.000
z 0.000 0.000 1.202
Polar
3z2-r22.405
x2-y2-11.221
xy-0.531
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.097 -0.050 0.000
y -0.050 5.318 0.000
z 0.000 0.000 3.506


<r2> (average value of r2) Å2
<r2> 123.396
(<r2>)1/2 11.108