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

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-268.322480
Energy at 298.15K-268.329582
HF Energy-268.322480
Nuclear repulsion energy178.576262
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 B3PW91/6-31G(2df,p)
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' 3785 3639 52.42      
2 A' 3144 3022 18.10      
3 A' 3062 2944 17.46      
4 A' 3054 2936 12.09      
5 A' 1856 1784 248.20      
6 A' 1494 1437 11.81      
7 A' 1450 1394 14.81      
8 A' 1417 1362 37.04      
9 A' 1407 1353 25.71      
10 A' 1310 1259 1.25      
11 A' 1177 1132 226.50      
12 A' 1090 1048 46.62      
13 A' 1013 974 3.59      
14 A' 824 792 12.53      
15 A' 614 590 20.60      
16 A' 466 448 18.95      
17 A' 246 237 2.97      
18 A" 3149 3027 16.78      
19 A" 3090 2971 3.51      
20 A" 1488 1430 6.03      
21 A" 1274 1225 0.12      
22 A" 1103 1060 0.46      
23 A" 810 779 20.46      
24 A" 669 643 78.54      
25 A" 522 502 21.08      
26 A" 202 194 0.01      
27 A" 38 36 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19876.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 19109.0 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 B3PW91/6-31G(2df,p)
ABC
0.34003 0.12771 0.09612

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.572 0.000
C2 -0.599 -0.812 0.000
C3 0.452 -1.911 0.000
O4 -0.959 1.524 0.000
O5 1.175 0.836 0.000
H6 -1.262 -0.884 0.871
H7 -1.262 -0.884 -0.871
H8 -0.024 -2.896 0.000
H9 1.095 -1.838 -0.880
H10 1.095 -1.838 0.880
H11 -0.489 2.370 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50832.52441.35061.20372.11442.11443.46842.79002.79001.8629
C21.50831.52102.36322.42071.09681.09682.16212.16752.16753.1835
C32.52441.52103.71352.84032.17972.17971.09341.09291.09294.3834
O41.35062.36323.71352.24152.57822.57824.51764.03664.03660.9673
O51.20372.42072.84032.24153.10643.10643.91912.81582.81582.2633
H62.11441.09682.17972.57823.10641.74222.51813.08752.54263.4555
H72.11441.09682.17972.57823.10641.74222.51812.54263.08753.4555
H83.46842.16211.09344.51763.91912.51812.51811.77381.77385.2863
H92.79002.16751.09294.03662.81583.08752.54261.77381.76104.5815
H102.79002.16751.09294.03662.81582.54263.08751.77381.76104.5815
H111.86293.18354.38340.96732.26333.45553.45555.28634.58154.5815

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 112.891 C1 C2 H6 107.460
C1 C2 H7 107.460 C1 O4 H11 105.773
C2 C1 O4 111.388 C2 C1 O5 126.030
C2 C3 H8 110.515 C2 C3 H9 110.984
C2 C3 H10 110.984 C3 C2 H6 111.721
C3 C2 H7 111.721 O4 C1 O5 122.581
H6 C2 H7 105.160 H8 C3 H9 108.448
H8 C3 H10 108.448 H9 C3 H10 107.349
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.451      
2 C -0.351      
3 C -0.441      
4 O -0.402      
5 O -0.354      
6 H 0.163      
7 H 0.163      
8 H 0.139      
9 H 0.158      
10 H 0.158      
11 H 0.315      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.476 -0.239 0.000 1.495
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.757 -0.556 0.000
y -0.556 -24.822 0.000
z 0.000 0.000 -28.754
Traceless
 xyz
x -6.969 -0.556 0.000
y -0.556 6.434 0.000
z 0.000 0.000 0.535
Polar
3z2-r21.070
x2-y2-8.935
xy-0.556
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.009 -0.124 0.000
y -0.124 6.757 0.000
z 0.000 0.000 4.491


<r2> (average value of r2) Å2
<r2> 123.160
(<r2>)1/2 11.098