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

using model chemistry: CISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-267.602570
Energy at 298.15K-267.609927
HF Energy-266.908655
Nuclear repulsion energy179.589507
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 CISD/6-311G*
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' 3973 3677 61.59      
2 A' 3233 2991 26.83      
3 A' 3165 2928 6.51      
4 A' 3157 2922 26.81      
5 A' 1955 1809 325.34      
6 A' 1582 1464 17.69      
7 A' 1550 1435 13.69      
8 A' 1519 1406 22.81      
9 A' 1496 1385 55.43      
10 A' 1395 1291 1.95      
11 A' 1267 1172 299.69      
12 A' 1154 1067 34.20      
13 A' 1063 984 2.12      
14 A' 869 804 10.66      
15 A' 652 603 28.56      
16 A' 491 454 22.30      
17 A' 264 244 2.64      
18 A" 3242 3000 28.45      
19 A" 3199 2960 4.10      
20 A" 1576 1458 8.22      
21 A" 1355 1253 0.14      
22 A" 1179 1091 1.19      
23 A" 858 794 24.13      
24 A" 698 646 119.58      
25 A" 548 507 28.78      
26 A" 230 212 0.00      
27 A" 56 52 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20862.8 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 19304.3 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 CISD/6-311G*
ABC
0.34540 0.12861 0.09702

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.571 0.000
C2 -0.597 -0.809 0.000
C3 0.454 -1.905 0.000
O4 -0.949 1.516 0.000
O5 1.163 0.834 0.000
H6 -1.252 -0.880 0.868
H7 -1.252 -0.880 -0.868
H8 -0.019 -2.884 0.000
H9 1.092 -1.834 -0.876
H10 1.092 -1.834 0.876
H11 -0.513 2.365 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50402.51771.33951.19262.10382.10383.45512.78272.78271.8658
C21.50401.51882.35192.40851.08911.08912.15382.16132.16133.1754
C32.51771.51883.69812.82992.17082.17081.08701.08591.08594.3784
O41.33952.35193.69812.21972.56672.56674.49744.01954.01950.9544
O51.19262.40852.82992.21973.08603.08603.90172.80902.80902.2699
H62.10381.08912.17082.56673.08601.73592.50733.07282.53023.4396
H72.10381.08912.17082.56673.08601.73592.50732.53023.07283.4396
H83.45512.15381.08704.49743.90172.50732.50731.76211.76215.2722
H92.78272.16131.08594.01952.80903.07282.53021.76211.75134.5797
H102.78272.16131.08594.01952.80902.53023.07281.76211.75134.5797
H111.86583.17544.37840.95442.26993.43963.43965.27224.57974.5797

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 112.792 C1 C2 H6 107.362
C1 C2 H7 107.362 C1 O4 H11 107.672
C2 C1 O4 111.476 C2 C1 O5 126.152
C2 C3 H8 110.393 C2 C3 H9 111.060
C2 C3 H10 111.060 C3 C2 H6 111.628
C3 C2 H7 111.628 O4 C1 O5 122.372
H6 C2 H7 105.681 H8 C3 H9 108.368
H8 C3 H10 108.368 H9 C3 H10 107.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability