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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-306.384489
Energy at 298.15K-306.391129
Nuclear repulsion energy228.197804
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 mPW1PW91/6-31G*
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 3299 3129 2.70      
2 A 3243 3075 3.65      
3 A 3215 3048 17.27      
4 A 3204 3039 4.36      
5 A 3181 3016 19.32      
6 A 3099 2939 28.76      
7 A 1849 1753 176.91      
8 A 1737 1647 31.02      
9 A 1529 1450 8.26      
10 A 1519 1440 7.42      
11 A 1502 1424 30.30      
12 A 1458 1382 80.21      
13 A 1356 1286 129.26      
14 A 1267 1201 315.27      
15 A 1225 1162 16.71      
16 A 1194 1132 0.58      
17 A 1093 1037 4.37      
18 A 1072 1016 12.80      
19 A 1038 984 30.82      
20 A 1007 955 19.08      
21 A 891 845 10.09      
22 A 832 789 30.71      
23 A 677 642 5.28      
24 A 535 508 0.16      
25 A 480 455 1.34      
26 A 343 325 17.41      
27 A 222 211 3.97      
28 A 204 194 4.25      
29 A 139 132 0.19      
30 A 100 95 3.26      

Unscaled Zero Point Vibrational Energy (zpe) 21253.4 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 20154.6 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 mPW1PW91/6-31G*
ABC
0.34485 0.07817 0.06450

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.021 -0.888 -0.001
H2 2.403 0.540 0.888
H3 2.402 0.542 -0.887
C4 2.286 -0.085 0.000
O5 1.013 -0.724 0.000
O6 0.063 1.318 -0.000
C7 -0.041 0.113 -0.000
H8 -1.239 -1.729 -0.000
C9 -1.311 -0.647 -0.000
H10 -3.423 -0.540 0.000
H11 -2.506 1.078 0.000
C12 -2.478 -0.007 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79231.79241.08882.01453.69023.22094.34234.33876.45275.86585.5694
H21.79231.77521.09202.07802.62102.63484.38223.99895.99085.01694.9913
H31.79241.77521.09202.07802.61902.63374.38193.99825.98995.01564.9903
C41.08881.09201.09201.42472.62872.33513.89023.64095.72674.93074.7651
O52.01452.07802.07801.42472.25261.34542.46642.32544.43933.95323.5643
O63.69022.62102.61902.62872.25261.21033.31442.39823.95012.57982.8662
C73.22092.63482.63372.33511.34541.21032.19761.48023.44432.64732.4406
H84.34234.38224.38193.89022.46643.31442.19761.08472.48623.07992.1220
C94.33873.99893.99823.64092.32542.39821.48021.08472.11412.09831.3313
H106.45275.99085.98995.72674.43933.95013.44432.48622.11411.86001.0844
H115.86585.01695.01564.93073.95322.57982.64733.07992.09831.86001.0853
C125.56944.99134.99034.76513.56432.86622.44062.12201.33131.08441.0853

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 110.540 H1 C4 H3 110.544
H1 C4 O5 105.765 H2 C4 H3 108.741
H2 C4 O5 110.621 H3 C4 O5 110.621
C4 O5 C7 114.874 O5 C7 O6 123.538
O5 C7 C9 110.672 O6 C7 C9 125.789
C7 C9 H8 117.074 C7 C9 C12 120.379
H8 C9 C12 122.546 C9 C12 H10 121.792
C9 C12 H11 120.180 H10 C12 H11 118.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.190      
2 H 0.195      
3 H 0.195      
4 C -0.288      
5 O -0.470      
6 O -0.497      
7 C 0.624      
8 H 0.192      
9 C -0.183      
10 H 0.187      
11 H 0.210      
12 C -0.355      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.070 -1.495 -0.000 1.496
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.430 0.699 -0.001
y 0.699 -37.836 0.001
z -0.001 0.001 -35.546
Traceless
 xyz
x 11.261 0.699 -0.001
y 0.699 -7.348 0.001
z -0.001 0.001 -3.913
Polar
3z2-r2-7.825
x2-y212.406
xy0.699
xz-0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 175.668
(<r2>)1/2 13.254