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

using model chemistry: B3LYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/3-21G*
 hartrees
Energy at 0K-304.781149
Energy at 298.15K-304.787658
Nuclear repulsion energy225.250239
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 B3LYP/3-21G*
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 3262 3138 3.82      
2 A 3232 3109 0.68      
3 A 3182 3062 13.41      
4 A 3168 3048 2.95      
5 A 3134 3015 22.16      
6 A 3070 2954 21.12      
7 A 1748 1682 88.78      
8 A 1698 1634 30.71      
9 A 1563 1503 10.11      
10 A 1544 1485 8.90      
11 A 1494 1437 28.16      
12 A 1478 1422 33.13      
13 A 1354 1303 27.25      
14 A 1200 1154 400.85      
15 A 1186 1141 15.99      
16 A 1161 1117 0.04      
17 A 1111 1069 3.79      
18 A 1052 1012 26.63      
19 A 1030 991 34.18      
20 A 990 953 15.91      
21 A 835 804 7.74      
22 A 833 801 33.83      
23 A 666 640 4.88      
24 A 544 523 0.08      
25 A 482 464 0.70      
26 A 329 316 22.06      
27 A 213 205 3.95      
28 A 213 205 4.76      
29 A 115 110 5.63      
30 A 65 62 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 20976.4 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 20179.3 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 B3LYP/3-21G*
ABC
0.33391 0.07644 0.06294

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.054 -0.896 -0.000
H2 2.448 0.546 0.889
H3 2.447 0.547 -0.887
C4 2.333 -0.080 0.000
O5 1.015 -0.744 0.000
O6 0.053 1.342 -0.001
C7 -0.065 0.118 -0.000
H8 -1.230 -1.733 -0.002
C9 -1.326 -0.655 -0.001
H10 -3.443 -0.536 0.001
H11 -2.510 1.072 0.002
C12 -2.493 -0.014 0.001

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79951.79951.08872.04493.74403.28034.36574.38726.50725.90265.6175
H21.79951.77581.09292.12252.67592.69964.41744.05916.05465.06435.0515
H31.79951.77581.09302.12252.67422.69884.41694.05876.05455.06415.0513
C41.08871.09291.09301.47582.68772.40683.92833.70465.79434.97914.8274
O52.04492.12252.12251.47582.29661.38192.45372.34314.46283.96563.5837
O63.74402.67592.67422.68772.29661.22913.33132.42663.96802.57732.8845
C73.28032.69962.69882.40681.38191.22912.18711.47933.44052.62472.4319
H84.36574.41744.41693.92832.45373.33132.18711.08182.51533.08292.1330
C94.38724.05914.05873.70462.34312.42661.47931.08182.11992.09401.3317
H106.50726.05466.05455.79434.46283.96803.44052.51532.11991.85881.0836
H115.90265.06435.06414.97913.96562.57732.62473.08292.09401.85881.0859
C125.61755.05155.05134.82743.58372.88452.43192.13301.33171.08361.0859

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 111.151 H1 C4 H3 111.145
H1 C4 O5 104.759 H2 C4 H3 108.660
H2 C4 O5 110.555 H3 C4 O5 110.553
C4 O5 C7 114.713 O5 C7 O6 123.078
O5 C7 C9 109.903 O6 C7 C9 127.019
C7 C9 H8 116.433 C7 C9 C12 119.698
H8 C9 C12 123.869 C9 C12 H10 122.403
C9 C12 H11 119.682 H10 C12 H11 117.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.210      
2 H 0.215      
3 H 0.215      
4 C -0.340      
5 O -0.516      
6 O -0.501      
7 C 0.655      
8 H 0.215      
9 C -0.250      
10 H 0.203      
11 H 0.223      
12 C -0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.179 -1.191 0.001 1.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.315 0.946 -0.001
y 0.946 -38.432 0.005
z -0.001 0.005 -36.028
Traceless
 xyz
x 11.915 0.946 -0.001
y 0.946 -7.760 0.005
z -0.001 0.005 -4.155
Polar
3z2-r2-8.310
x2-y213.117
xy0.946
xz-0.001
yz0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.169 -0.539 -0.004
y -0.539 6.205 0.003
z -0.004 0.003 3.066


<r2> (average value of r2) Å2
<r2> 179.510
(<r2>)1/2 13.398