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

using model chemistry: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-302.377351
Energy at 298.15K-302.383334
Nuclear repulsion energy222.452246
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 B1B95/STO-3G
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 3570 3152 1.88      
2 A 3482 3074 0.22      
3 A 3480 3073 4.29      
4 A 3440 3037 2.19      
5 A 3412 3013 26.01      
6 A 3284 2900 4.63      
7 A 1874 1655 52.14      
8 A 1826 1612 15.31      
9 A 1650 1457 8.71      
10 A 1628 1437 4.70      
11 A 1564 1381 1.76      
12 A 1538 1358 30.20      
13 A 1391 1229 21.74      
14 A 1265 1117 227.76      
15 A 1230 1086 2.11      
16 A 1183 1044 0.63      
17 A 1116 986 3.52      
18 A 1108 979 9.45      
19 A 1103 974 10.39      
20 A 1026 906 15.03      
21 A 875 773 3.28      
22 A 781 689 13.63      
23 A 646 571 3.39      
24 A 489 432 0.60      
25 A 462 408 0.16      
26 A 311 275 8.31      
27 A 195 172 1.34      
28 A 188 166 3.23      
29 A 102 90 0.56      
30 A 81 71 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 22148.7 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 19557.3 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 B1B95/STO-3G
ABC
0.31863 0.07525 0.06160

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.099 -0.856 -0.001
H2 2.421 0.555 0.897
H3 2.421 0.556 -0.896
C4 2.311 -0.084 -0.000
O5 1.031 -0.804 -0.000
O6 0.112 1.368 0.000
C7 -0.045 0.130 0.000
H8 -1.279 -1.731 0.000
C9 -1.355 -0.637 0.000
H10 -3.486 -0.545 0.000
H11 -2.580 1.090 -0.000
C12 -2.532 -0.006 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.80421.80421.10312.06873.72423.29504.46404.45966.59186.00275.6950
H21.80421.79301.10662.14072.60742.65854.44044.06026.07495.10885.0652
H31.80421.79301.10662.14072.60652.65814.44044.05996.07455.10815.0647
C41.10311.10661.10661.46842.63532.36573.94923.70765.81475.02954.8438
O52.06872.14072.14071.46842.35841.42432.48862.39204.52374.07683.6513
O63.72422.60742.60652.63532.35841.24873.39712.48454.07492.70612.9801
C73.29502.65852.65812.36571.42431.24872.23241.51773.50602.71022.4908
H84.46404.44044.44043.94922.48863.39712.23241.09722.50543.10632.1326
C94.45964.06024.05993.70762.39202.48451.51771.09722.13222.11631.3353
H106.59186.07496.07455.81474.52374.07493.50602.50542.13221.86911.0953
H116.00275.10885.10815.02954.07682.70612.71023.10632.11631.86911.0965
C125.69505.06525.06474.84383.65132.98012.49082.13261.33531.09531.0965

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 109.464 H1 C4 H3 109.468
H1 C4 O5 106.252 H2 C4 H3 108.215
H2 C4 O5 111.703 H3 C4 O5 111.704
C4 O5 C7 109.725 O5 C7 O6 123.706
O5 C7 C9 108.742 O6 C7 C9 127.552
C7 C9 H8 116.308 C7 C9 C12 121.497
H8 C9 C12 122.195 C9 C12 H10 122.315
C9 C12 H11 120.661 H10 C12 H11 117.025
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.094      
2 H 0.092      
3 H 0.092      
4 C -0.135      
5 O -0.172      
6 O -0.216      
7 C 0.207      
8 H 0.095      
9 C -0.097      
10 H 0.090      
11 H 0.096      
12 C -0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.143 -0.748 0.000 0.762
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.463 0.702 0.000
y 0.702 -34.815 -0.001
z 0.000 -0.001 -32.629
Traceless
 xyz
x 7.259 0.702 0.000
y 0.702 -5.269 -0.001
z 0.000 -0.001 -1.990
Polar
3z2-r2-3.980
x2-y28.352
xy0.702
xz0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.144 -0.414 0.000
y -0.414 4.117 -0.000
z 0.000 -0.000 1.543


<r2> (average value of r2) Å2
<r2> 181.625
(<r2>)1/2 13.477