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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-306.252500
Energy at 298.15K-306.259049
Nuclear repulsion energy225.120759
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 3290 3151 4.61      
2 A 3240 3103 2.46      
3 A 3221 3085 12.27      
4 A 3188 3053 3.93      
5 A 3177 3042 19.30      
6 A 3085 2955 22.61      
7 A 1731 1657 98.00      
8 A 1716 1643 73.28      
9 A 1534 1469 9.04      
10 A 1521 1456 11.39      
11 A 1494 1431 46.85      
12 A 1473 1411 41.12      
13 A 1355 1298 44.23      
14 A 1235 1183 386.73      
15 A 1206 1155 0.14      
16 A 1170 1120 0.18      
17 A 1110 1063 8.77      
18 A 1046 1001 20.38      
19 A 1040 996 48.02      
20 A 1007 965 19.71      
21 A 854 818 9.52      
22 A 823 788 31.24      
23 A 671 642 5.81      
24 A 528 506 0.60      
25 A 477 457 0.92      
26 A 328 314 18.41      
27 A 215 206 5.94      
28 A 205 196 7.48      
29 A 107 103 4.01      
30 A 101 96 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 21071.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 20180.5 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
0.33490 0.07597 0.06266

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 3.048 -0.916 -0.001
H2 2.458 0.529 0.891
H3 2.457 0.532 -0.889
C4 2.338 -0.092 0.000
O5 1.022 -0.727 0.000
O6 0.051 1.350 -0.000
C7 -0.063 0.117 -0.000
H8 -1.228 -1.728 -0.001
C9 -1.321 -0.647 -0.000
H10 -3.440 -0.577 0.000
H11 -2.561 1.059 0.001
C12 -2.506 -0.025 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79811.79811.08802.03463.75713.27764.35214.37706.49665.94645.6249
H21.79811.77971.09232.10552.69462.70524.41324.05706.06675.12475.0739
H31.79811.77971.09232.10552.69262.70414.41294.05636.06615.12365.0731
C41.08801.09231.09231.46122.70342.40993.92353.70105.79855.03234.8447
O52.03462.10552.10551.46122.29211.37422.46272.34444.46454.00343.5972
O63.75712.69462.69262.70342.29211.23773.33242.42253.98732.62772.9032
C73.27762.70522.70412.40991.37421.23772.18201.47213.44792.66992.4476
H84.35214.41324.41293.92352.46273.33242.18201.08452.49333.08942.1287
C94.37704.05704.05633.70102.34442.42251.47211.08452.12022.10941.3384
H106.49666.06676.06615.79854.46453.98733.44792.49332.12021.85791.0847
H115.94645.12475.12365.03234.00342.62772.66993.08942.10941.85791.0862
C125.62495.07395.07314.84473.59722.90322.44762.12871.33841.08471.0862

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 111.117 H1 C4 H3 111.120
H1 C4 O5 104.957 H2 C4 H3 109.106
H2 C4 O5 110.246 H3 C4 O5 110.247
C4 O5 C7 116.369 O5 C7 O6 122.610
O5 C7 C9 110.852 O6 C7 C9 126.538
C7 C9 H8 116.356 C7 C9 C12 121.045
H8 C9 C12 122.599 C9 C12 H10 121.736
C9 C12 H11 120.567 H10 C12 H11 117.697
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 0.189      
2 H 0.194      
3 H 0.194      
4 C -0.237      
5 O -0.522      
6 O -0.450      
7 C 0.494      
8 H 0.193      
9 C -0.112      
10 H 0.171      
11 H 0.200      
12 C -0.316      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.091 -1.470 0.000 1.473
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.326 1.075 -0.001
y 1.075 -39.234 0.003
z -0.001 0.003 -35.911
Traceless
 xyz
x 13.247 1.075 -0.001
y 1.075 -9.115 0.003
z -0.001 0.003 -4.132
Polar
3z2-r2-8.264
x2-y214.908
xy1.075
xz-0.001
yz0.003


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> 180.202
(<r2>)1/2 13.424