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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-266.819988
Energy at 298.15K-266.827104
HF Energy-266.819988
Nuclear repulsion energy177.089888
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 B3PW91/3-21G
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' 3520 3383 16.07      
2 A' 3151 3029 15.72      
3 A' 3076 2957 6.92      
4 A' 3076 2957 15.63      
5 A' 1798 1728 168.07      
6 A' 1557 1497 11.65      
7 A' 1507 1448 27.65      
8 A' 1466 1409 18.57      
9 A' 1414 1359 44.65      
10 A' 1341 1289 0.90      
11 A' 1147 1102 137.82      
12 A' 1083 1041 152.40      
13 A' 1027 988 6.66      
14 A' 811 780 10.37      
15 A' 609 585 15.76      
16 A' 465 447 29.09      
17 A' 251 241 3.01      
18 A" 3154 3031 16.45      
19 A" 3109 2989 0.87      
20 A" 1556 1496 9.79      
21 A" 1316 1265 0.31      
22 A" 1143 1098 0.02      
23 A" 836 804 22.99      
24 A" 667 641 119.68      
25 A" 531 511 34.40      
26 A" 193 185 0.00      
27 A" 37 36 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 19920.1 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 19147.2 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 B3PW91/3-21G
ABC
0.32823 0.12792 0.09531

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.558 0.000
C2 -0.608 -0.821 0.000
C3 0.477 -1.899 0.000
O4 -0.991 1.518 0.000
O5 1.192 0.839 0.000
H6 -1.260 -0.901 0.879
H7 -1.260 -0.901 -0.879
H8 0.030 -2.898 0.000
H9 1.115 -1.797 -0.883
H10 1.115 -1.797 0.883
H11 -0.558 2.413 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50782.50341.37941.22472.11952.11953.45692.75222.75221.9365
C21.50781.52952.37002.44901.09761.09762.17292.16892.16893.2346
C32.50341.52953.71892.83012.18802.18801.09471.09461.09464.4345
O41.37942.37003.71892.28652.58762.58764.53254.02594.02590.9950
O51.22472.44902.83012.28653.13313.13313.91402.78162.78162.3534
H62.11951.09762.18802.58763.13311.75852.53503.09102.53923.5001
H72.11951.09762.18802.58763.13311.75852.53502.53923.09103.5001
H83.45692.17291.09474.53253.91402.53502.53501.78071.78075.3437
H92.75222.16891.09464.02592.78163.09102.53921.78071.76654.6159
H102.75222.16891.09464.02592.78162.53923.09101.78071.76654.6159
H111.93653.23464.43450.99502.35343.50013.50015.34374.61594.6159

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 111.019 C1 C2 H6 107.837
C1 C2 H7 107.837 C1 O4 H11 108.200
C2 C1 O4 110.262 C2 C1 O5 127.035
C2 C3 H8 110.701 C2 C3 H9 110.387
C2 C3 H10 110.387 C3 C2 H6 111.727
C3 C2 H7 111.727 O4 C1 O5 122.703
H6 C2 H7 106.462 H8 C3 H9 108.849
H8 C3 H10 108.849 H9 C3 H10 107.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.643      
2 C -0.541      
3 C -0.611      
4 O -0.569      
5 O -0.485      
6 H 0.259      
7 H 0.259      
8 H 0.212      
9 H 0.230      
10 H 0.230      
11 H 0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.286 -0.072 0.000 1.288
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.682 -0.485 0.000
y -0.485 -24.325 0.000
z 0.000 0.000 -29.032
Traceless
 xyz
x -8.004 -0.485 0.000
y -0.485 7.533 0.000
z 0.000 0.000 0.471
Polar
3z2-r20.942
x2-y2-10.358
xy-0.485
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.367 -0.116 0.000
y -0.116 5.956 0.000
z 0.000 0.000 3.631


<r2> (average value of r2) Å2
<r2> 124.153
(<r2>)1/2 11.142