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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-51.374019
Energy at 298.15K-51.381393
HF Energy-51.374019
Nuclear repulsion energy99.911035
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/CEP-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' 4102 3684 104.20      
2 A' 3303 2966 58.28      
3 A' 3254 2922 15.96      
4 A' 3233 2903 49.55      
5 A' 2006 1802 434.57      
6 A' 1629 1463 15.59      
7 A' 1602 1439 7.64      
8 A' 1574 1414 34.24      
9 A' 1534 1377 43.75      
10 A' 1426 1281 1.28      
11 A' 1307 1174 331.32      
12 A' 1181 1060 32.69      
13 A' 1077 967 1.63      
14 A' 884 794 6.73      
15 A' 659 592 34.02      
16 A' 494 443 21.55      
17 A' 262 235 2.86      
18 A" 3321 2983 72.69      
19 A" 3293 2957 4.48      
20 A" 1621 1455 4.86      
21 A" 1395 1253 0.01      
22 A" 1209 1085 1.78      
23 A" 871 782 24.03      
24 A" 691 621 129.43      
25 A" 558 501 30.38      
26 A" 233 209 0.01      
27 A" 59 53 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 21387.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 19206.0 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 HF/CEP-31G*
ABC
0.34226 0.12605 0.09535

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.578 0.000
C2 -0.608 -0.817 0.000
C3 0.452 -1.929 0.000
O4 -0.944 1.534 0.000
O5 1.170 0.843 0.000
H6 -1.257 -0.884 0.873
H7 -1.257 -0.884 -0.873
H8 -0.036 -2.904 0.000
H9 1.090 -1.859 -0.881
H10 1.090 -1.859 0.881
H11 -0.500 2.379 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.52172.54721.34351.19972.11652.11653.48262.81162.81161.8694
C21.52171.53582.37472.43251.09011.09012.16422.17792.17793.1982
C32.54721.53583.73332.86362.18532.18531.09101.08951.08954.4120
O41.34352.37473.73332.22432.58912.58914.53004.05304.05300.9554
O51.19972.43252.86362.22433.10433.10433.93712.84392.84392.2689
H62.11651.09012.18532.58913.10431.74562.51713.08792.54193.4617
H72.11651.09012.18532.58913.10431.74562.51712.54193.08793.4617
H83.48262.16421.09104.53003.93712.51712.51711.77061.77065.3041
H92.81162.17791.08954.05302.84393.08792.54191.77061.76124.6120
H102.81162.17791.08954.05302.84392.54193.08791.77061.76124.6120
H111.86943.19824.41200.95542.26893.46173.46175.30414.61204.6120

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 112.839 C1 C2 H6 107.106
C1 C2 H7 107.106 C1 O4 H11 107.612
C2 C1 O4 111.801 C2 C1 O5 126.312
C2 C3 H8 109.789 C2 C3 H9 110.973
C2 C3 H10 110.973 C3 C2 H6 111.524
C3 C2 H7 111.524 O4 C1 O5 121.887
H6 C2 H7 106.381 H8 C3 H9 108.587
H8 C3 H10 108.587 H9 C3 H10 107.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.012      
2 C -0.017      
3 C -0.350      
4 O -0.450      
5 O -0.238      
6 H 0.116      
7 H 0.116      
8 H 0.129      
9 H 0.121      
10 H 0.121      
11 H 0.463      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.721 -0.444 0.000 1.777
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.679 -0.533 0.000
y -0.533 -25.117 0.000
z 0.000 0.000 -29.225
Traceless
 xyz
x -8.508 -0.533 0.000
y -0.533 7.335 0.000
z 0.000 0.000 1.173
Polar
3z2-r22.345
x2-y2-10.562
xy-0.533
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.569 -0.092 0.000
y -0.092 5.774 0.000
z 0.000 0.000 4.076


<r2> (average value of r2) Å2
<r2> 103.305
(<r2>)1/2 10.164