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

using model chemistry: MP2/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/aug-cc-pVTZ
 hartrees
Energy at 0K-267.947869
Energy at 298.15K-267.955065
HF Energy-266.953595
Nuclear repulsion energy178.593530
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 MP2/aug-cc-pVTZ
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' 3751 3574 75.02      
2 A' 3177 3027 13.59      
3 A' 3090 2945 12.40      
4 A' 3087 2942 10.88      
5 A' 1805 1720 248.27      
6 A' 1522 1450 9.30      
7 A' 1476 1407 14.44      
8 A' 1430 1363 2.78      
9 A' 1415 1349 62.48      
10 A' 1304 1243 6.54      
11 A' 1168 1113 212.48      
12 A' 1100 1048 100.44      
13 A' 1026 978 1.35      
14 A' 829 790 6.82      
15 A' 612 584 17.43      
16 A' 469 447 19.93      
17 A' 251 240 2.56      
18 A" 3181 3031 13.26      
19 A" 3134 2986 1.13      
20 A" 1516 1445 7.16      
21 A" 1297 1236 0.04      
22 A" 1119 1066 0.11      
23 A" 815 777 11.80      
24 A" 650 619 83.43      
25 A" 524 499 23.28      
26 A" 220 210 0.01      
27 A" 56 53 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20012.0 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 19069.4 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/aug-cc-pVTZ
ABC
0.33813 0.12843 0.09636

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.566 0.000
C2 -0.603 -0.811 0.000
C3 0.450 -1.904 0.000
O4 -0.961 1.525 0.000
O5 1.182 0.827 0.000
H6 -1.257 -0.878 0.871
H7 -1.257 -0.878 -0.871
H8 -0.023 -2.885 0.000
H9 1.088 -1.826 -0.878
H10 1.088 -1.826 0.878
H11 -0.488 2.372 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50262.51061.35771.21042.10332.10333.45022.77032.77031.8712
C21.50261.51832.36282.42261.09131.09132.15362.15892.15893.1847
C32.51061.51833.70812.82792.17402.17401.08831.08781.08784.3780
O41.35772.36283.70812.25332.57322.57324.50814.02454.02450.9699
O51.21042.42262.82792.25333.10103.10103.90242.79662.79662.2749
H62.10331.09132.17402.57323.10101.74182.51153.07492.52923.4516
H72.10331.09132.17402.57323.10101.74182.51152.52923.07493.4516
H83.45022.15361.08834.50813.90242.51152.51151.76741.76745.2771
H92.77032.15891.08784.02452.79663.07492.52921.76741.75604.5693
H102.77032.15891.08784.02452.79662.52923.07491.76741.75604.5693
H111.87123.18474.37800.96992.27493.45163.45165.27714.56934.5693

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 112.415 C1 C2 H6 107.296
C1 C2 H7 107.296 C1 O4 H11 105.804
C2 C1 O4 111.292 C2 C1 O5 126.151
C2 C3 H8 110.326 C2 C3 H9 110.780
C2 C3 H10 110.780 C3 C2 H6 111.788
C3 C2 H7 111.788 O4 C1 O5 122.557
H6 C2 H7 105.889 H8 C3 H9 108.621
H8 C3 H10 108.621 H9 C3 H10 107.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability