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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-268.353038
Energy at 298.15K-268.360165
HF Energy-268.353038
Nuclear repulsion energy178.499258
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 mPW1PW91/6-31+G**
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' 3823 3639 69.35      
2 A' 3168 3015 18.09      
3 A' 3085 2936 19.05      
4 A' 3080 2932 12.44      
5 A' 1856 1767 318.19      
6 A' 1509 1436 14.24      
7 A' 1466 1395 16.88      
8 A' 1437 1368 22.41      
9 A' 1420 1351 63.15      
10 A' 1309 1246 6.22      
11 A' 1189 1131 245.48      
12 A' 1104 1051 49.42      
13 A' 1025 976 3.13      
14 A' 833 793 11.65      
15 A' 618 588 19.89      
16 A' 471 448 21.61      
17 A' 248 237 2.97      
18 A" 3174 3021 17.66      
19 A" 3119 2969 2.40      
20 A" 1502 1430 9.01      
21 A" 1286 1224 0.07      
22 A" 1112 1059 0.28      
23 A" 817 777 19.95      
24 A" 662 630 96.92      
25 A" 523 498 26.94      
26 A" 208 198 0.00      
27 A" 37 36 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20040.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 19074.7 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 mPW1PW91/6-31+G**
ABC
0.34002 0.12750 0.09599

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.570 0.000
C2 -0.599 -0.810 0.000
C3 0.444 -1.915 0.000
O4 -0.953 1.526 0.000
O5 1.179 0.836 0.000
H6 -1.259 -0.878 0.871
H7 -1.259 -0.878 -0.871
H8 -0.041 -2.894 0.000
H9 1.087 -1.850 -0.880
H10 1.087 -1.850 0.880
H11 -0.495 2.379 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50452.52461.35021.20872.10762.10763.46392.79472.79471.8756
C21.50451.51922.36352.42291.09561.09562.15662.16692.16693.1911
C32.52461.51923.71442.84772.17652.17651.09231.09171.09174.3958
O41.35022.36353.71442.24112.57572.57574.51314.04154.04150.9679
O51.20872.42292.84772.24113.10543.10543.92432.82772.82772.2768
H62.10761.09562.17652.57573.10541.74242.51113.08482.53963.4572
H72.10761.09562.17652.57573.10541.74242.51112.53963.08483.4572
H83.46392.15661.09234.51313.92432.51112.51111.77121.77125.2923
H92.79472.16691.09174.04152.82773.08482.53961.77121.76004.5999
H102.79472.16691.09174.04152.82772.53963.08481.77121.76004.5999
H111.87563.19114.39580.96792.27683.45723.45725.29234.59994.5999

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 113.215 C1 C2 H6 107.257
C1 C2 H7 107.257 C1 O4 H11 106.859
C2 C1 O4 111.656 C2 C1 O5 126.157
C2 C3 H8 110.271 C2 C3 H9 111.127
C2 C3 H10 111.127 C3 C2 H6 111.658
C3 C2 H7 111.658 O4 C1 O5 122.187
H6 C2 H7 105.346 H8 C3 H9 108.389
H8 C3 H10 108.389 H9 C3 H10 107.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.358      
2 C -0.185      
3 C -0.594      
4 O -0.439      
5 O -0.453      
6 H 0.200      
7 H 0.200      
8 H 0.168      
9 H 0.186      
10 H 0.186      
11 H 0.371      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.607 -0.440 0.000 1.667
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.329 -0.561 0.000
y -0.561 -25.328 0.000
z 0.000 0.000 -29.639
Traceless
 xyz
x -7.846 -0.561 0.000
y -0.561 7.156 0.000
z 0.000 0.000 0.690
Polar
3z2-r21.381
x2-y2-10.001
xy-0.561
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.765 -0.109 0.000
y -0.109 7.046 0.000
z 0.000 0.000 4.859


<r2> (average value of r2) Å2
<r2> 123.916
(<r2>)1/2 11.132