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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-306.421299
Energy at 298.15K-306.427931
Nuclear repulsion energy228.034016
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 B3PW91/6-311G*
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 3251 3130 4.59      
2 A 3200 3080 4.79      
3 A 3177 3059 20.35      
4 A 3155 3038 6.69      
5 A 3139 3022 24.84      
6 A 3062 2948 31.80      
7 A 1814 1746 196.01      
8 A 1709 1645 27.55      
9 A 1512 1456 9.28      
10 A 1498 1442 9.78      
11 A 1483 1428 26.62      
12 A 1439 1385 74.09      
13 A 1336 1286 85.50      
14 A 1239 1193 302.35      
15 A 1213 1168 82.98      
16 A 1185 1141 0.41      
17 A 1085 1045 2.54      
18 A 1046 1007 14.81      
19 A 1027 989 32.54      
20 A 993 956 23.57      
21 A 880 847 11.03      
22 A 832 801 31.46      
23 A 673 648 4.65      
24 A 532 512 0.03      
25 A 476 458 1.50      
26 A 340 327 16.71      
27 A 221 213 3.93      
28 A 204 197 4.39      
29 A 137 132 0.16      
30 A 100 97 3.43      

Unscaled Zero Point Vibrational Energy (zpe) 20978.4 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 20195.9 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 B3PW91/6-311G*
ABC
0.34497 0.07788 0.06431

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.020 -0.899 -0.000
H2 2.414 0.534 0.888
H3 2.414 0.534 -0.888
C4 2.293 -0.089 0.000
O5 1.012 -0.720 0.000
O6 0.062 1.321 -0.000
C7 -0.042 0.119 -0.000
H8 -1.236 -1.727 -0.000
C9 -1.312 -0.644 -0.000
H10 -3.423 -0.553 0.000
H11 -2.521 1.073 0.000
C12 -2.482 -0.012 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79141.79141.08812.01563.69843.22644.33574.33936.45175.88105.5730
H21.79141.77551.09152.08042.63502.64474.38484.00786.00375.04345.0065
H31.79141.77551.09152.08042.63452.64444.38474.00766.00345.04315.0063
C41.08811.09151.09151.42812.63962.34433.89083.64775.73484.95234.7762
O52.01562.08042.08041.42812.25141.34722.46332.32544.43803.96193.5654
O63.69842.63502.63452.63962.25141.20633.31202.39713.95642.59442.8720
C73.22642.64472.64442.34431.34721.20632.19821.48163.44712.65612.4440
H84.33574.38484.38473.89082.46333.31202.19821.08532.48133.07972.1191
C94.33934.00784.00763.64772.32542.39711.48161.08532.11262.09941.3297
H106.45176.00376.00345.73484.43803.95643.44712.48132.11261.85931.0849
H115.88105.04345.04314.95233.96192.59442.65613.07972.09941.85931.0857
C125.57305.00655.00634.77623.56542.87202.44402.11911.32971.08491.0857

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 110.552 H1 C4 H3 110.554
H1 C4 O5 105.663 H2 C4 H3 108.845
H2 C4 O5 110.605 H3 C4 O5 110.605
C4 O5 C7 115.249 O5 C7 O6 123.604
O5 C7 C9 110.492 O6 C7 C9 125.904
C7 C9 H8 116.981 C7 C9 C12 120.668
H8 C9 C12 122.351 C9 C12 H10 121.741
C9 C12 H11 120.385 H10 C12 H11 117.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.229      
2 H 0.235      
3 H 0.235      
4 C -0.478      
5 O -0.318      
6 O -0.362      
7 C 0.446      
8 H 0.225      
9 C -0.314      
10 H 0.230      
11 H 0.245      
12 C -0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.130 -1.505 0.000 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.799 0.700 -0.000
y 0.700 -38.362 0.001
z -0.000 0.001 -36.132
Traceless
 xyz
x 11.448 0.700 -0.000
y 0.700 -7.396 0.001
z -0.000 0.001 -4.051
Polar
3z2-r2-8.103
x2-y212.563
xy0.700
xz-0.000
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> 176.461
(<r2>)1/2 13.284