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All results from a given calculation for C3H4O2 (2-Propenoic acid)

using model chemistry: MP2/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 MP2/TZVP
 hartrees
Energy at 0K-266.553696
Energy at 298.15K-266.558120
HF Energy-265.747865
Nuclear repulsion energy162.632367
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/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' 3796 3599 85.40      
2 A' 3317 3144 1.93      
3 A' 3258 3088 1.19      
4 A' 3213 3046 2.40      
5 A' 1807 1713 258.55      
6 A' 1685 1597 26.41      
7 A' 1472 1396 23.97      
8 A' 1378 1306 61.46      
9 A' 1327 1258 1.42      
10 A' 1221 1157 171.82      
11 A' 1044 989 92.99      
12 A' 845 801 8.28      
13 A' 589 558 41.37      
14 A' 538 510 4.50      
15 A' 290 275 0.59      
16 A" 999 947 34.22      
17 A" 876 831 41.57      
18 A" 762 722 23.28      
19 A" 553 524 98.51      
20 A" 444 421 7.38      
21 A" 34 32 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 14723.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 13956.7 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 MP2/TZVP
ABC
0.35781 0.14629 0.10384

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.336 0.326 0.000
H2 1.753 1.201 0.000
O3 -0.467 1.686 0.000
C4 0.000 0.566 0.000
C5 -0.813 -0.666 0.000
H6 -1.880 -0.491 0.000
C7 -0.297 -1.897 0.000
H8 0.771 -2.059 0.000
H9 -0.940 -2.766 0.000

Atom - Atom Distances (Å)
  O1 H2 O3 C4 C5 H6 C7 H8 H9
O10.96952.25931.35792.36693.31822.75812.45093.8392
H20.96952.27311.86463.17344.00773.71473.40484.7946
O32.25932.27311.21332.37762.59503.58673.94494.4771
C41.35791.86461.21331.47652.15672.48092.73673.4624
C52.36693.17342.37761.47651.08161.33382.10932.1035
H63.31824.00772.59502.15671.08162.11683.08042.4617
C72.75813.71473.58672.48091.33382.11681.08091.0811
H82.45093.40483.94492.73672.10933.08041.08091.8513
H93.83924.79464.47713.46242.10352.46171.08111.8513

picture of 2-Propenoic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C4 O3 122.872 O1 C4 C5 113.175
H2 O1 C4 105.256 O3 C4 C5 123.954
C4 C5 H6 114.052 C4 C5 C7 123.881
C5 C7 H8 121.385 C5 C7 H9 120.805
H6 C5 C7 122.067 H8 C7 H9 117.810
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability