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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-304.697011
Energy at 298.15K-304.703609
Nuclear repulsion energy226.228423
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 mPW1PW91/3-21G
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 3290 3141 2.15      
2 A 3260 3112 0.41      
3 A 3212 3067 11.36      
4 A 3190 3046 2.58      
5 A 3165 3022 18.39      
6 A 3092 2952 18.93      
7 A 1779 1698 100.39      
8 A 1719 1641 27.25      
9 A 1566 1495 11.03      
10 A 1548 1478 11.04      
11 A 1502 1434 36.67      
12 A 1481 1413 40.70      
13 A 1362 1300 45.27      
14 A 1233 1177 392.78      
15 A 1197 1142 3.74      
16 A 1172 1119 0.00      
17 A 1116 1066 4.46      
18 A 1060 1011 22.16      
19 A 1044 997 50.19      
20 A 1021 975 13.13      
21 A 852 814 8.58      
22 A 846 808 38.00      
23 A 675 644 4.73      
24 A 548 523 0.01      
25 A 488 466 0.63      
26 A 331 316 23.07      
27 A 215 205 4.43      
28 A 214 205 5.22      
29 A 116 111 5.99      
30 A 80 76 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21188.1 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 20226.2 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 mPW1PW91/3-21G
ABC
0.33683 0.07722 0.06357

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.044 -0.888 -0.000
H2 -2.430 0.550 -0.887
H3 -2.430 0.550 0.887
C4 -2.319 -0.078 -0.000
O5 -1.012 -0.741 -0.000
O6 -0.055 1.333 0.000
C7 0.063 0.113 0.000
H8 1.230 -1.733 0.001
C9 1.321 -0.656 0.000
H10 3.433 -0.525 -0.000
H11 2.490 1.078 -0.001
C12 2.482 -0.008 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79791.79791.08782.03753.72383.26394.35664.37086.48745.87285.5954
H21.79791.77371.09212.11282.65282.68134.40394.03826.02635.02665.0220
H31.79791.77371.09212.11272.65292.68124.40334.03796.02635.02705.0220
C41.08781.09211.09211.46572.66702.38893.91583.68505.76934.94554.8010
O52.03752.11282.11271.46572.28411.37242.45142.33404.45023.94583.5696
O63.72382.65282.65292.66702.28411.22593.32482.41863.95272.55822.8698
C73.26392.68132.68122.38891.37241.22592.18421.47443.43052.61202.4222
H84.35664.40394.40333.91582.45143.32482.18421.08122.51283.08022.1316
C94.37084.03824.03793.68502.33402.41861.47441.08122.11662.09091.3296
H106.48746.02636.02635.76934.45023.95273.43052.51282.11661.85961.0829
H115.87285.02665.02704.94553.94582.55822.61203.08022.09091.85961.0855
C125.59545.02205.02204.80103.56962.86982.42222.13161.32961.08291.0855

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 111.134 H1 C4 H3 111.128
H1 C4 O5 104.903 H2 C4 H3 108.598
H2 C4 O5 110.536 H3 C4 O5 110.529
C4 O5 C7 114.607 O5 C7 O6 122.959
O5 C7 C9 110.093 O6 C7 C9 126.948
C7 C9 H8 116.609 C7 C9 C12 119.413
H8 C9 C12 123.977 C9 C12 H10 122.311
C9 C12 H11 119.594 H10 C12 H11 118.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.235      
2 H 0.239      
3 H 0.239      
4 C -0.403      
5 O -0.535      
6 O -0.515      
7 C 0.679      
8 H 0.250      
9 C -0.294      
10 H 0.231      
11 H 0.252      
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
  -0.156 -1.205 0.000 1.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.897 -0.954 -0.001
y -0.954 -38.298 -0.004
z -0.001 -0.004 -36.109
Traceless
 xyz
x 12.307 -0.954 -0.001
y -0.954 -7.795 -0.004
z -0.001 -0.004 -4.512
Polar
3z2-r2-9.024
x2-y213.401
xy-0.954
xz-0.001
yz-0.004


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> 177.877
(<r2>)1/2 13.337