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

using model chemistry: wB97X-D/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 wB97X-D/3-21G*
 hartrees
Energy at 0K-304.683018
Energy at 298.15K 
HF Energy-304.683018
Nuclear repulsion energy226.140239
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 wB97X-D/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 3295 3123 1.88      
2 A 3267 3096 0.31      
3 A 3222 3054 11.29      
4 A 3197 3030 2.00      
5 A 3177 3011 18.02      
6 A 3103 2941 18.33      
7 A 1795 1701 105.78      
8 A 1735 1644 26.90      
9 A 1564 1482 11.45      
10 A 1551 1470 11.63      
11 A 1510 1431 38.74      
12 A 1489 1411 42.21      
13 A 1370 1298 50.85      
14 A 1246 1181 412.84      
15 A 1202 1140 3.27      
16 A 1176 1115 0.01      
17 A 1124 1066 4.36      
18 A 1063 1008 0.17      
19 A 1049 994 75.10      
20 A 1022 969 12.80      
21 A 856 812 9.05      
22 A 850 806 39.66      
23 A 680 644 4.95      
24 A 543 515 0.03      
25 A 490 465 0.61      
26 A 336 318 22.64      
27 A 218 206 4.85      
28 A 204 193 5.90      
29 A 109 104 5.59      
30 A 43i 41i 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21199.3 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 20092.7 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 wB97X-D/3-21G*
ABC
0.33732 0.07698 0.06343

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.055 -0.910 -0.002
H2 -2.473 0.538 -0.884
H3 -2.475 0.535 0.886
C4 -2.339 -0.090 -0.000
O5 -1.016 -0.719 -0.000
O6 -0.037 1.338 0.000
C7 0.066 0.119 0.000
H8 1.237 -1.735 -0.000
C9 1.326 -0.658 -0.000
H10 3.433 -0.551 -0.000
H11 2.513 1.065 0.000
C12 2.489 -0.020 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79241.79231.08882.04713.76323.28544.36994.38746.49755.90735.6146
H21.79241.77021.09272.11772.71292.72134.43994.07966.07075.09145.0713
H31.79231.77021.09272.11772.71542.72244.44004.08056.07205.09335.0727
C41.08881.09271.09271.46412.70872.41323.93553.70775.78994.98684.8279
O52.04712.11772.11771.46412.27891.36852.47162.34284.45263.95463.5745
O63.76322.71292.71542.70872.27891.22423.32712.41683.95132.56432.8680
C73.28542.72132.72242.41321.36851.22422.19261.47983.43342.62382.4272
H84.36994.43994.44003.93552.47163.32712.19261.08122.49513.07742.1237
C94.38744.07964.08053.70772.34282.41681.47981.08122.11022.09221.3267
H106.49756.07076.07205.78994.45263.95133.43342.49512.11021.86011.0834
H115.90735.09145.09334.98683.95462.56432.62383.07742.09221.86011.0853
C125.61465.07135.07274.82793.57452.86802.42722.12371.32671.08341.0853

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 110.494 H1 C4 H3 110.488
H1 C4 O5 105.676 H2 C4 H3 108.191
H2 C4 O5 111.005 H3 C4 O5 111.001
C4 O5 C7 116.804 O5 C7 O6 122.935
O5 C7 C9 110.618 O6 C7 C9 126.447
C7 C9 H8 116.922 C7 C9 C12 119.633
H8 C9 C12 123.445 C9 C12 H10 121.894
C9 C12 H11 119.987 H10 C12 H11 118.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.233      
2 H 0.235      
3 H 0.235      
4 C -0.390      
5 O -0.543      
6 O -0.515      
7 C 0.686      
8 H 0.249      
9 C -0.294      
10 H 0.230      
11 H 0.251      
12 C -0.377      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.203 -1.220 -0.000 1.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.805 -0.954 0.000
y -0.954 -38.308 -0.001
z 0.000 -0.001 -36.014
Traceless
 xyz
x 12.356 -0.954 0.000
y -0.954 -7.899 -0.001
z 0.000 -0.001 -4.457
Polar
3z2-r2-8.914
x2-y213.503
xy-0.954
xz0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.725 0.580 0.000
y 0.580 6.136 0.001
z 0.000 0.001 3.058


<r2> (average value of r2) Å2
<r2> 178.223
(<r2>)1/2 13.350