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

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-268.422579
Energy at 298.15K-268.429679
HF Energy-268.422579
Nuclear repulsion energy178.179297
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 B3LYP/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' 3753 3622 47.17      
2 A' 3125 3016 20.95      
3 A' 3053 2946 18.12      
4 A' 3042 2935 12.42      
5 A' 1841 1777 243.84      
6 A' 1501 1448 9.24      
7 A' 1458 1407 12.09      
8 A' 1418 1368 2.09      
9 A' 1408 1359 45.93      
10 A' 1314 1268 2.21      
11 A' 1171 1130 227.90      
12 A' 1083 1045 59.45      
13 A' 1011 975 1.61      
14 A' 816 788 10.79      
15 A' 612 591 19.88      
16 A' 465 448 18.29      
17 A' 249 240 2.83      
18 A" 3130 3020 20.07      
19 A" 3071 2963 4.72      
20 A" 1494 1442 4.97      
21 A" 1278 1234 0.07      
22 A" 1109 1070 0.46      
23 A" 811 783 17.43      
24 A" 666 642 79.98      
25 A" 522 503 20.51      
26 A" 204 197 0.01      
27 A" 36 35 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19819.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19125.9 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 B3LYP/6-31G(2df,p)
ABC
0.33881 0.12697 0.09560

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.574 0.000
C2 -0.598 -0.815 0.000
C3 0.458 -1.917 0.000
O4 -0.965 1.526 0.000
O5 1.175 0.841 0.000
H6 -1.260 -0.889 0.871
H7 -1.260 -0.889 -0.871
H8 -0.017 -2.901 0.000
H9 1.101 -1.842 -0.881
H10 1.101 -1.842 0.881
H11 -0.502 2.377 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51252.53241.35511.20452.11852.11853.47552.79732.79731.8717
C21.51251.52622.36922.42591.09671.09672.16592.17202.17203.1936
C32.53241.52623.72472.84882.18332.18331.09331.09281.09284.3997
O41.35512.36923.72472.24632.58422.58424.52744.04774.04770.9688
O51.20452.42592.84882.24633.11123.11123.92722.82452.82452.2743
H62.11851.09672.18332.58423.11121.74282.52083.09062.54603.4644
H72.11851.09672.18332.58423.11121.74282.52082.54603.09063.4644
H83.47552.16591.09334.52743.92722.52082.52081.77401.77405.3008
H92.79732.17201.09284.04772.82453.09062.54601.77401.76124.5986
H102.79732.17201.09284.04772.82452.54603.09061.77401.76124.5986
H111.87173.19364.39970.96882.27433.46443.46445.30084.59864.5986

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 112.894 C1 C2 H6 107.502
C1 C2 H7 107.502 C1 O4 H11 106.106
C2 C1 O4 111.307 C2 C1 O5 126.094
C2 C3 H8 110.457 C2 C3 H9 110.975
C2 C3 H10 110.975 C3 C2 H6 111.648
C3 C2 H7 111.648 O4 C1 O5 122.599
H6 C2 H7 105.231 H8 C3 H9 108.476
H8 C3 H10 108.476 H9 C3 H10 107.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.420      
2 C -0.290      
3 C -0.371      
4 O -0.376      
5 O -0.335      
6 H 0.136      
7 H 0.136      
8 H 0.113      
9 H 0.134      
10 H 0.134      
11 H 0.299      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.457 -0.251 0.000 1.478
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.990 -0.586 0.000
y -0.586 -25.104 0.000
z 0.000 0.000 -28.908
Traceless
 xyz
x -6.984 -0.586 0.000
y -0.586 6.345 0.000
z 0.000 0.000 0.639
Polar
3z2-r21.277
x2-y2-8.886
xy-0.586
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.998 -0.130 0.000
y -0.130 6.790 0.000
z 0.000 0.000 4.474


<r2> (average value of r2) Å2
<r2> 123.847
(<r2>)1/2 11.129