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

using model chemistry: MP2/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-57.635866
Energy at 298.15K-57.642478
HF Energy-56.818048
Nuclear repulsion energy121.847542
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/CEP-31G*
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 3310 3142 6.86      
2 A 3251 3087 4.45      
3 A 3246 3081 22.52      
4 A 3221 3058 27.44      
5 A 3199 3037 6.87      
6 A 3110 2953 40.64      
7 A 1792 1702 193.70      
8 A 1701 1615 18.78      
9 A 1518 1441 9.85      
10 A 1512 1435 6.84      
11 A 1493 1418 15.57      
12 A 1451 1377 79.67      
13 A 1335 1267 114.49      
14 A 1243 1180 325.89      
15 A 1214 1153 33.54      
16 A 1189 1129 0.46      
17 A 1077 1023 6.80      
18 A 1032 980 47.86      
19 A 1032 979 19.70      
20 A 926 879 31.61      
21 A 867 823 14.71      
22 A 819 777 26.93      
23 A 662 628 5.22      
24 A 534 507 0.08      
25 A 469 446 1.33      
26 A 344 326 15.48      
27 A 223 212 4.07      
28 A 202 192 5.41      
29 A 167 159 1.73      
30 A 94 90 3.06      

Unscaled Zero Point Vibrational Energy (zpe) 21115.4 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 20046.9 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 MP2/CEP-31G*
ABC
0.33140 0.07596 0.06254

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.028 -0.893 0.002
H2 -2.391 0.548 -0.898
H3 -2.390 0.549 0.900
C4 -2.290 -0.079 0.001
O5 -0.999 -0.749 0.001
O6 -0.045 1.340 -0.002
C7 0.065 0.110 -0.001
H8 1.291 -1.758 -0.006
C9 1.354 -0.666 -0.002
H10 3.499 -0.546 0.002
H11 2.570 1.095 0.006
C12 2.549 0.001 0.002

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.81471.81461.09842.03383.72603.25124.40414.38716.53535.94045.6480
H21.81471.79841.10122.10472.63382.65164.43514.03756.05785.07305.0517
H31.81461.79841.10122.10482.63432.65204.43774.03816.05665.06985.0502
C41.09841.10121.10121.45482.65612.36283.95503.69085.80755.00034.8401
O52.03382.10472.10481.45482.29641.36742.50202.35404.50204.01743.6265
O63.72602.63382.63432.65612.29641.23473.37302.44484.01372.62652.9191
C73.25122.65162.65202.36281.36741.23472.23391.50403.49552.69192.4866
H84.40414.43514.43773.95502.50203.37302.23391.09372.51833.12612.1623
C94.38714.03754.03813.69082.35402.44481.50401.09372.14822.14001.3689
H106.53536.05786.05665.80754.50204.01373.49552.51832.14821.88501.0954
H115.94045.07305.06985.00034.01742.62652.69193.12612.14001.88501.0942
C125.64805.05175.05024.84013.62652.91912.48662.16231.36891.09541.0942

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 111.176 H1 C4 H3 111.173
H1 C4 O5 104.739 H2 C4 H3 109.486
H2 C4 O5 110.093 H3 C4 O5 110.095
C4 O5 C7 113.658 O5 C7 O6 123.816
O5 C7 C9 110.040 O6 C7 C9 126.144
C7 C9 H8 117.755 C7 C9 C12 119.819
H8 C9 C12 122.427 C9 C12 H10 120.923
C9 C12 H11 120.242 H10 C12 H11 118.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability