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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-268.296394
Energy at 298.15K-268.303513
HF Energy-268.296394
Nuclear repulsion energy178.190177
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*
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' 3722 3561 48.09      
2 A' 3155 3018 20.58      
3 A' 3077 2944 18.86      
4 A' 3066 2933 12.56      
5 A' 1867 1786 258.07      
6 A' 1525 1459 12.02      
7 A' 1485 1420 14.59      
8 A' 1444 1382 10.34      
9 A' 1429 1368 56.49      
10 A' 1325 1268 1.41      
11 A' 1192 1141 245.90      
12 A' 1102 1054 45.92      
13 A' 1024 980 2.62      
14 A' 828 793 12.68      
15 A' 615 589 21.09      
16 A' 468 447 21.34      
17 A' 249 239 2.93      
18 A" 3162 3025 19.74      
19 A" 3102 2967 4.55      
20 A" 1520 1455 6.95      
21 A" 1292 1236 0.09      
22 A" 1118 1069 0.42      
23 A" 819 784 23.05      
24 A" 681 651 98.32      
25 A" 523 500 21.23      
26 A" 211 201 0.01      
27 A" 38 36 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20019.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19153.0 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*
ABC
0.33825 0.12731 0.09576

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.571 0.000
C2 -0.602 -0.813 0.000
C3 0.449 -1.915 0.000
O4 -0.958 1.528 0.000
O5 1.180 0.837 0.000
H6 -1.263 -0.886 0.873
H7 -1.263 -0.886 -0.873
H8 -0.030 -2.899 0.000
H9 1.092 -1.843 -0.882
H10 1.092 -1.843 0.882
H11 -0.484 2.379 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50922.52581.35401.20942.11682.11683.47032.79252.79251.8711
C21.50921.52192.36782.42811.09781.09782.16292.16952.16953.1937
C32.52581.52193.71872.84682.17972.17971.09471.09381.09384.3932
O41.35402.36783.71872.24692.58472.58474.52314.04264.04260.9739
O51.20942.42812.84682.24693.11433.11433.92692.82252.82252.2684
H62.11681.09782.17972.58473.11431.74562.51723.08912.54253.4677
H72.11681.09782.17972.58473.11431.74562.51722.54253.08913.4677
H83.47032.16291.09474.52313.92692.51722.51721.77521.77525.2971
H92.79252.16951.09384.04262.82253.08912.54251.77521.76344.5916
H102.79252.16951.09384.04262.82252.54253.08911.77521.76344.5916
H111.87113.19374.39320.97392.26843.46773.46775.29714.59164.5916

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 112.875 C1 C2 H6 107.527
C1 C2 H7 107.527 C1 O4 H11 105.830
C2 C1 O4 111.467 C2 C1 O5 126.181
C2 C3 H8 110.441 C2 C3 H9 111.012
C2 C3 H10 111.012 C3 C2 H6 111.592
C3 C2 H7 111.592 O4 C1 O5 122.352
H6 C2 H7 105.325 H8 C3 H9 108.418
H8 C3 H10 108.418 H9 C3 H10 107.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.586      
2 C -0.410      
3 C -0.507      
4 O -0.580      
5 O -0.464      
6 H 0.204      
7 H 0.204      
8 H 0.170      
9 H 0.188      
10 H 0.188      
11 H 0.421      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.455 -0.220 0.000 1.472
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.176 -0.469 0.000
y -0.469 -24.672 0.000
z 0.000 0.000 -28.930
Traceless
 xyz
x -7.375 -0.469 0.000
y -0.469 6.881 0.000
z 0.000 0.000 0.494
Polar
3z2-r20.987
x2-y2-9.504
xy-0.469
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.822 -0.082 0.000
y -0.082 6.351 0.000
z 0.000 0.000 4.149


<r2> (average value of r2) Å2
<r2> 123.641
(<r2>)1/2 11.119