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

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-304.713350
Energy at 298.15K-304.720298
Nuclear repulsion energy230.181011
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 HF/6-31G(2df,p)
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 3403 3081 3.53      
2 A 3360 3042 3.97      
3 A 3310 2997 7.01      
4 A 3301 2989 27.36      
5 A 3285 2974 28.57      
6 A 3204 2901 36.93      
7 A 1983 1795 253.79      
8 A 1849 1674 48.30      
9 A 1625 1471 3.60      
10 A 1612 1460 5.96      
11 A 1612 1460 38.58      
12 A 1555 1408 118.59      
13 A 1447 1310 203.57      
14 A 1368 1239 369.84      
15 A 1325 1200 51.27      
16 A 1292 1170 3.14      
17 A 1165 1055 1.79      
18 A 1142 1034 24.74      
19 A 1135 1027 19.97      
20 A 1126 1019 21.57      
21 A 949 859 10.30      
22 A 935 847 41.35      
23 A 725 657 10.24      
24 A 582 527 0.45      
25 A 505 457 2.44      
26 A 369 335 18.39      
27 A 239 216 4.71      
28 A 203 184 4.13      
29 A 159 144 0.59      
30 A 95 86 3.10      

Unscaled Zero Point Vibrational Energy (zpe) 22428.5 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 20309.0 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 HF/6-31G(2df,p)
ABC
0.35630 0.07859 0.06517

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.996 -0.908 -0.002
H2 -2.417 0.520 -0.880
H3 -2.418 0.517 0.882
C4 -2.284 -0.095 -0.000
O5 -1.006 -0.695 0.000
O6 -0.056 1.301 -0.000
C7 0.035 0.120 -0.000
H8 1.236 -1.713 -0.000
C9 1.312 -0.641 -0.000
H10 3.400 -0.547 0.000
H11 2.506 1.062 0.000
C12 2.467 -0.012 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.77391.77391.08032.00153.67713.20024.30794.31616.40585.84385.5361
H21.77391.76181.08202.05982.63772.63554.37104.00375.97915.03024.9915
H31.77391.76181.08202.05982.64032.63704.37134.00465.98025.03214.9928
C41.08031.08201.08201.41242.62942.32923.87463.63785.70234.92824.7526
O52.00152.05982.05981.41242.21001.32152.46222.31844.40803.92653.5395
O63.67712.63772.64032.62942.21001.18443.27882.37563.91902.57312.8446
C73.20022.63552.63702.32921.32151.18442.19121.48683.43052.64462.4361
H84.30794.37104.37133.87462.46223.27882.19121.07402.45743.05122.0992
C94.31614.00374.00463.63782.31842.37561.48681.07402.08992.07991.3154
H106.40585.97915.98025.70234.40803.91903.43052.45742.08991.84081.0751
H115.84385.03025.03214.92823.92652.57312.64463.05122.07991.84081.0748
C125.53614.99154.99284.75263.53952.84462.43612.09921.31541.07511.0748

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 110.249 H1 C4 H3 110.243
H1 C4 O5 106.055 H2 C4 H3 109.005
H2 C4 O5 110.635 H3 C4 O5 110.633
C4 O5 C7 116.815 O5 C7 O6 123.657
O5 C7 C9 111.151 O6 C7 C9 125.192
C7 C9 H8 116.743 C7 C9 C12 120.642
H8 C9 C12 122.615 C9 C12 H10 121.585
C9 C12 H11 120.625 H10 C12 H11 117.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.155      
2 H 0.156      
3 H 0.156      
4 C -0.193      
5 O -0.425      
6 O -0.483      
7 C 0.611      
8 H 0.166      
9 C -0.190      
10 H 0.168      
11 H 0.191      
12 C -0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.042 -1.644 -0.001 1.645
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.515 -0.585 0.001
y -0.585 -38.479 0.001
z 0.001 0.001 -35.646
Traceless
 xyz
x 11.548 -0.585 0.001
y -0.585 -7.899 0.001
z 0.001 0.001 -3.649
Polar
3z2-r2-7.298
x2-y212.964
xy-0.585
xz0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.806 0.554 0.000
y 0.554 6.543 0.000
z 0.000 0.000 4.267


<r2> (average value of r2) Å2
<r2> 174.351
(<r2>)1/2 13.204