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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-306.347843
Energy at 298.15K-306.354443
Nuclear repulsion energy227.656041
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 B3PW91/6-31G*
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 3279 3137 3.06      
2 A 3222 3082 3.78      
3 A 3194 3056 17.01      
4 A 3185 3047 4.67      
5 A 3160 3023 20.33      
6 A 3080 2946 29.91      
7 A 1829 1750 173.19      
8 A 1722 1647 29.20      
9 A 1521 1455 8.12      
10 A 1509 1444 7.13      
11 A 1492 1427 25.94      
12 A 1449 1387 73.42      
13 A 1345 1286 105.86      
14 A 1252 1198 331.42      
15 A 1216 1163 21.82      
16 A 1185 1134 0.53      
17 A 1087 1040 3.67      
18 A 1058 1012 13.31      
19 A 1031 986 29.34      
20 A 996 953 19.57      
21 A 882 843 10.05      
22 A 824 788 29.23      
23 A 672 643 4.99      
24 A 531 508 0.16      
25 A 476 456 1.32      
26 A 339 325 17.02      
27 A 220 211 3.97      
28 A 203 194 4.24      
29 A 135 129 0.17      
30 A 100 95 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 21094.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 20181.4 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 B3PW91/6-31G*
ABC
0.34292 0.07779 0.06417

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.026 -0.894 -0.002
H2 -2.410 0.541 -0.888
H3 -2.412 0.537 0.890
C4 -2.293 -0.087 -0.000
O5 -1.015 -0.725 0.000
O6 -0.063 1.324 -0.000
C7 0.042 0.115 0.000
H8 1.239 -1.731 -0.000
C9 1.313 -0.647 -0.000
H10 3.428 -0.548 -0.000
H11 2.518 1.077 0.000
C12 2.485 -0.010 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79521.79511.09052.01823.70113.22914.34604.34586.46305.88335.5810
H21.79521.77801.09362.08282.62892.64194.38884.00736.00465.03565.0049
H31.79511.77801.09372.08272.63212.64364.38904.00846.00605.03805.0066
C41.09051.09361.09371.42852.63852.34293.89543.64875.73914.94904.7779
O52.01822.08282.08271.42852.25921.34972.46782.32894.44613.96523.5717
O63.70112.62892.63212.63852.25921.21303.32012.40313.96092.59232.8754
C73.22912.64192.64362.34291.34971.21302.20021.48223.45072.65622.4464
H84.34604.38884.38903.89542.46783.32012.20021.08642.48783.08452.1243
C94.34584.00734.00843.64872.32892.40311.48221.08642.11732.10251.3336
H106.46306.00466.00605.73914.44613.96093.45072.48782.11731.86231.0860
H115.88335.03565.03804.94903.96522.59232.65623.08452.10251.86231.0868
C125.58105.00495.00664.77793.57172.87542.44642.12431.33361.08601.0868

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 110.551 H1 C4 H3 110.543
H1 C4 O5 105.706 H2 C4 H3 108.758
H2 C4 O5 110.638 H3 C4 O5 110.634
C4 O5 C7 114.954 O5 C7 O6 123.575
O5 C7 C9 110.562 O6 C7 C9 125.863
C7 C9 H8 117.030 C7 C9 C12 120.545
H8 C9 C12 122.425 C9 C12 H10 121.761
C9 C12 H11 120.263 H10 C12 H11 117.976
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.187     0.112
2 H 0.192     0.090
3 H 0.192     0.090
4 C -0.284     -0.091
5 O -0.462     -0.376
6 O -0.492     -0.524
7 C 0.614     0.819
8 H 0.187     0.181
9 C -0.174     -0.395
10 H 0.183     0.164
11 H 0.206     0.145
12 C -0.350     -0.216


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.089 -1.494 -0.000 1.497
CHELPG        
AIM        
ESP -0.107 -1.489 -0.000 1.492


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.462 -0.699 0.001
y -0.699 -37.837 0.000
z 0.001 0.000 -35.536
Traceless
 xyz
x 11.225 -0.699 0.001
y -0.699 -7.338 0.000
z 0.001 0.000 -3.887
Polar
3z2-r2-7.774
x2-y212.376
xy-0.699
xz0.001
yz0.000


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> 176.454
(<r2>)1/2 13.284