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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-305.140998
Energy at 298.15K-305.147441
HF Energy-304.531304
Nuclear repulsion energy222.526705
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 MP2/6-31G
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 3280 3138 7.31      
2 A 3232 3092 13.05      
3 A 3225 3086 2.15      
4 A 3190 3052 21.48      
5 A 3179 3042 4.02      
6 A 3095 2961 21.72      
7 A 1692 1618 26.19      
8 A 1680 1607 88.61      
9 A 1567 1499 6.51      
10 A 1554 1487 6.71      
11 A 1511 1446 23.63      
12 A 1492 1428 33.31      
13 A 1355 1297 26.35      
14 A 1214 1161 422.50      
15 A 1205 1153 22.73      
16 A 1178 1127 0.97      
17 A 1116 1068 5.92      
18 A 1020 976 44.89      
19 A 980 938 19.45      
20 A 969 928 24.14      
21 A 830 795 13.29      
22 A 778 744 27.20      
23 A 664 635 6.83      
24 A 503 481 0.97      
25 A 471 451 0.96      
26 A 332 317 17.32      
27 A 217 208 4.90      
28 A 185 177 10.64      
29 A 114 109 0.09      
30 A 85 81 2.34      

Unscaled Zero Point Vibrational Energy (zpe) 20956.8 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 20051.5 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 MP2/6-31G
ABC
0.32637 0.07428 0.06122

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.071 -0.919 -0.002
H2 2.479 0.533 0.895
H3 2.477 0.535 -0.894
C4 2.367 -0.087 -0.000
O5 1.032 -0.746 0.000
O6 0.057 1.366 0.000
C7 -0.064 0.118 0.000
H8 -1.251 -1.737 0.001
C9 -1.338 -0.652 0.000
H10 -3.471 -0.576 -0.000
H11 -2.594 1.066 -0.001
C12 -2.535 -0.023 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.80641.80641.09052.04673.78263.30194.39884.41726.55146.00275.6773
H21.80641.78981.09462.12842.71322.72724.45694.09556.11855.17885.1233
H31.80641.78981.09452.12842.71122.72604.45684.09476.11745.17685.1219
C41.09051.09461.09451.48892.72872.43913.97643.74775.85865.09284.9021
O52.04672.12842.12841.48892.32611.39512.48872.37174.50634.05313.6393
O63.78262.71322.71122.72872.32611.25393.36762.45334.02762.66782.9404
C73.30192.72722.72602.43911.39511.25392.20261.48893.47772.70182.4752
H84.39884.45694.45683.97642.48873.36762.20261.08872.50553.10802.1421
C94.41724.09554.09473.74772.37172.45331.48891.08872.13462.12781.3523
H106.55146.11856.11745.85864.50634.02763.47772.50552.13461.86181.0880
H116.00275.17885.17685.09284.05312.66782.70183.10802.12781.86181.0898
C125.67735.12335.12194.90213.63932.94042.47522.14211.35231.08801.0898

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 111.525 H1 C4 H3 111.530
H1 C4 O5 103.953 H2 C4 H3 109.689
H2 C4 O5 110.008 H3 C4 O5 110.009
C4 O5 C7 115.461 O5 C7 O6 122.739
O5 C7 C9 110.598 O6 C7 C9 126.663
C7 C9 H8 116.553 C7 C9 C12 121.115
H8 C9 C12 122.332 C9 C12 H10 121.657
C9 C12 H11 120.845 H10 C12 H11 117.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability