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

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-267.809958
Energy at 298.15K-267.817083
HF Energy-266.942590
Nuclear repulsion energy178.357394
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 QCISD/TZVP
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' 3817 3646 57.64      
2 A' 3154 3013 24.08      
3 A' 3086 2948 7.61      
4 A' 3078 2940 22.55      
5 A' 1845 1762 267.79      
6 A' 1527 1459 9.75      
7 A' 1495 1428 8.51      
8 A' 1461 1396 6.00      
9 A' 1441 1377 48.86      
10 A' 1343 1283 1.22      
11 A' 1198 1145 245.77      
12 A' 1110 1060 71.54      
13 A' 1030 984 1.00      
14 A' 834 796 7.34      
15 A' 628 600 20.21      
16 A' 473 452 19.74      
17 A' 258 246 2.01      
18 A" 3161 3020 26.75      
19 A" 3123 2983 2.90      
20 A" 1519 1451 5.62      
21 A" 1301 1243 0.01      
22 A" 1134 1084 0.55      
23 A" 825 788 9.12      
24 A" 630 601 95.11      
25 A" 509 486 32.32      
26 A" 226 216 0.00      
27 A" 12 11 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20106.7 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 19207.9 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 QCISD/TZVP
ABC
0.33912 0.12737 0.09586

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.571 0.000
C2 -0.599 -0.814 0.000
C3 0.456 -1.913 0.000
O4 -0.963 1.526 0.000
O5 1.176 0.837 0.000
H6 -1.251 -0.887 0.875
H7 -1.251 -0.887 -0.875
H8 -0.024 -2.893 0.000
H9 1.095 -1.838 -0.881
H10 1.095 -1.838 0.881
H11 -0.502 2.376 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50932.52481.35681.20562.11042.11043.46352.78882.78881.8740
C21.50931.52322.36872.42461.09321.09322.15662.16662.16663.1920
C32.52481.52323.72022.84222.17542.17541.09131.09051.09054.3945
O41.35682.36873.72022.24742.58242.58244.51764.04124.04120.9670
O51.20562.42462.84222.24743.10253.10253.91792.81782.81782.2769
H62.11041.09322.17542.58243.10251.74962.50923.08062.53143.4599
H72.11041.09322.17542.58243.10251.74962.50922.53143.08063.4599
H83.46352.15661.09134.51763.91792.50922.50921.77161.77165.2905
H92.78882.16661.09054.04122.81783.08062.53141.77161.76164.5921
H102.78882.16661.09054.04122.81782.53143.08061.77161.76164.5921
H111.87403.19204.39450.96702.27693.45993.45995.29054.59214.5921

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 112.731 C1 C2 H6 107.294
C1 C2 H7 107.294 C1 O4 H11 106.280
C2 C1 O4 111.361 C2 C1 O5 126.166
C2 C3 H8 110.044 C2 C3 H9 110.899
C2 C3 H10 110.899 C3 C2 H6 111.437
C3 C2 H7 111.437 O4 C1 O5 122.473
H6 C2 H7 106.308 H8 C3 H9 108.581
H8 C3 H10 108.581 H9 C3 H10 107.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability