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All results from a given calculation for C4H6O2 (2-Propenoic acid, methyl ester)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-305.169538
Energy at 298.15K-305.175888
HF Energy-304.577929
Nuclear repulsion energy220.688074
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/SDD
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 3275 3161 11.81      
2 A 3218 3106 3.22      
3 A 3216 3104 18.65      
4 A 3174 3064 30.80      
5 A 3153 3044 6.97      
6 A 3058 2951 34.65      
7 A 1656 1599 26.55      
8 A 1633 1577 112.90      
9 A 1533 1480 7.93      
10 A 1521 1468 8.99      
11 A 1486 1434 24.91      
12 A 1466 1415 42.84      
13 A 1329 1283 19.88      
14 A 1194 1153 32.61      
15 A 1170 1130 432.27      
16 A 1156 1116 0.82      
17 A 1091 1053 9.32      
18 A 1007 972 48.67      
19 A 953 920 18.92      
20 A 903 872 31.27      
21 A 804 776 19.45      
22 A 773 746 26.77      
23 A 642 620 7.17      
24 A 504 487 0.23      
25 A 456 441 0.92      
26 A 317 306 16.74      
27 A 209 201 5.35      
28 A 188 181 11.21      
29 A 123 119 0.39      
30 A 86 83 3.10      

Unscaled Zero Point Vibrational Energy (zpe) 20647.4 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 19931.0 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/SDD
ABC
0.31982 0.07296 0.06010

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.084 -0.947 -0.010
H2 2.511 0.516 0.905
H3 2.504 0.530 -0.897
C4 2.391 -0.098 -0.000
O5 1.037 -0.744 0.000
O6 0.055 1.386 0.000
C7 -0.065 0.130 -0.000
H8 -1.244 -1.744 0.001
C9 -1.345 -0.657 0.000
H10 -3.492 -0.605 -0.000
H11 -2.628 1.059 -0.001
C12 -2.561 -0.033 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.81771.81781.09602.05693.82303.32824.40094.43876.58466.05385.7188
H21.81771.80201.10022.13922.75792.75734.47494.13086.17315.24625.1815
H31.81781.80201.10022.13952.74472.75004.47484.12666.16765.23625.1746
C41.09601.10021.10021.50012.76722.46663.99063.77795.90475.15054.9528
O52.05692.13922.13951.50012.34501.40662.49102.38394.53104.08433.6680
O63.82302.75792.74472.76722.34501.26133.38922.47684.06762.70302.9765
C73.32822.75732.75002.46661.40661.26132.21471.50303.50482.72592.5017
H84.40094.47494.47483.99062.49103.38922.21471.09202.52003.12612.1597
C94.43874.13084.12663.77792.38392.47681.50301.09202.14722.14221.3669
H106.58466.17316.16765.90474.53104.06763.50482.52002.14721.87471.0923
H116.05385.24625.23625.15054.08432.70302.72593.12612.14221.87471.0937
C125.71885.18155.17464.95283.66802.97652.50172.15971.36691.09231.0937

picture of 2-Propenoic acid, methyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 111.718 H1 C4 H3 111.732
H1 C4 O5 103.714 H2 C4 H3 109.964
H2 C4 O5 109.758 H3 C4 O5 109.782
C4 O5 C7 116.084 O5 C7 O6 122.945
O5 C7 C9 109.992 O6 C7 C9 127.063
C7 C9 H8 116.278 C7 C9 C12 121.240
H8 C9 C12 122.482 C9 C12 H10 121.245
C9 C12 H11 120.658 H10 C12 H11 118.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability