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

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3
 hartrees
Energy at 0K-268.211243
Energy at 298.15K-268.204474
HF Energy-266.846548
Nuclear repulsion energy179.785186
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 HF/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' 4056 3821 108.78      
2 A' 3287 3097 34.78      
3 A' 3226 3039 6.92      
4 A' 3220 3034 34.90      
5 A' 2034 1917 375.12      
6 A' 1645 1550 13.66      
7 A' 1613 1520 11.18      
8 A' 1582 1491 23.71      
9 A' 1557 1467 52.79      
10 A' 1443 1359 5.30      
11 A' 1314 1238 314.12      
12 A' 1189 1120 33.48      
13 A' 1084 1022 1.19      
14 A' 889 838 10.21      
15 A' 670 632 34.38      
16 A' 502 473 21.80      
17 A' 270 254 3.10      
18 A" 3301 3110 35.08      
19 A" 3254 3066 6.54      
20 A" 1639 1544 4.52      
21 A" 1406 1325 0.12      
22 A" 1225 1154 2.58      
23 A" 889 837 24.94      
24 A" 707 666 125.93      
25 A" 561 529 28.86      
26 A" 234 220 0.00      
27 A" 64 60 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21430.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 20191.8 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 MP2=FULL/6-31G*
ABC
0.33505 0.12805 0.09591

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.566 0.000
C2 -0.606 -0.811 0.000
C3 0.448 -1.907 0.000
O4 -0.963 1.528 0.000
O5 1.189 0.829 0.000
H6 -1.263 -0.883 0.873
H7 -1.263 -0.883 -0.873
H8 -0.027 -2.891 0.000
H9 1.087 -1.830 -0.881
H10 1.087 -1.830 0.881
H11 -0.481 2.380 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50472.51321.36091.21782.11132.11133.45702.77442.77441.8768
C21.50471.52012.36602.43131.09541.09542.15862.16332.16333.1938
C32.51321.52013.71302.83412.17702.17701.09251.09131.09134.3865
O41.36092.36603.71302.26292.58122.58124.51654.03124.03120.9793
O51.21782.43132.83412.26293.11553.11553.91312.80212.80212.2798
H62.11131.09542.17702.58123.11551.74642.51463.08202.53423.4671
H72.11131.09542.17702.58123.11551.74642.51462.53423.08203.4671
H83.45702.15861.09254.51653.91312.51462.51461.77311.77315.2904
H92.77442.16331.09134.03122.80213.08202.53421.77311.76184.5779
H102.77442.16331.09134.03122.80212.53423.08201.77311.76184.5779
H111.87683.19384.38650.97932.27983.46713.46715.29044.57794.5779

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 112.995 C1 C2 H6 107.129
C1 C2 H7 107.129 C1 O4 H11 107.594
C2 C1 O4 112.136 C2 C1 O5 126.428
C2 C3 H8 110.063 C2 C3 H9 111.112
C2 C3 H10 111.112 C3 C2 H6 111.692
C3 C2 H7 111.692 O4 C1 O5 121.436
H6 C2 H7 105.788 H8 C3 H9 108.399
H8 C3 H10 108.399 H9 C3 H10 107.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability