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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-306.412142
Energy at 298.15K-306.418772
Nuclear repulsion energy228.719677
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 mPW1PW91/6-31G(2df,p)
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 3283 3134 1.52      
2 A 3228 3082 3.13      
3 A 3191 3046 14.95      
4 A 3183 3039 3.32      
5 A 3157 3014 16.77      
6 A 3074 2935 27.46      
7 A 1839 1756 169.30      
8 A 1721 1643 27.86      
9 A 1501 1433 5.80      
10 A 1485 1418 7.59      
11 A 1479 1412 40.46      
12 A 1433 1369 78.10      
13 A 1339 1278 120.00      
14 A 1251 1194 300.49      
15 A 1214 1159 19.15      
16 A 1185 1132 0.77      
17 A 1078 1030 3.52      
18 A 1067 1018 11.48      
19 A 1042 995 22.89      
20 A 1013 967 16.29      
21 A 883 843 8.81      
22 A 847 809 25.80      
23 A 673 643 5.72      
24 A 539 514 0.07      
25 A 478 456 1.50      
26 A 340 325 16.86      
27 A 220 210 3.37      
28 A 203 194 3.64      
29 A 124 119 0.20      
30 A 99 94 2.68      

Unscaled Zero Point Vibrational Energy (zpe) 21083.5 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 20128.4 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 mPW1PW91/6-31G(2df,p)
ABC
0.34675 0.07850 0.06479

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.018 -0.886 -0.002
H2 -2.396 0.544 -0.885
H3 -2.398 0.540 0.887
C4 -2.280 -0.085 -0.000
O5 -1.010 -0.723 0.000
O6 -0.065 1.314 0.000
C7 0.040 0.114 0.000
H8 1.235 -1.726 -0.000
C9 1.310 -0.645 -0.000
H10 3.418 -0.536 -0.000
H11 2.495 1.078 0.000
C12 2.474 -0.006 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79151.79141.08882.01503.68253.21714.33554.33486.44605.85265.5619
H21.79151.77221.09192.07632.60992.62714.37283.99145.97984.99934.9800
H31.79141.77221.09192.07622.61352.62904.37303.99275.98145.00204.9820
C41.08881.09191.09191.42172.62022.32843.87943.63355.71634.91494.7545
O52.01502.07632.07621.42172.24561.34242.45872.32104.43213.94073.5565
O63.68252.60992.61352.62022.24561.20443.30592.39293.94382.57062.8610
C73.21712.62712.62902.32841.34241.20442.19411.47973.44062.63802.4370
H84.33554.37284.37303.87942.45873.30592.19411.08362.48633.07412.1194
C94.33483.99143.99273.63352.32102.39291.47971.08362.11122.09131.3276
H106.44605.97985.98145.71634.43213.94383.44062.48632.11121.85971.0832
H115.85264.99935.00204.91493.94072.57062.63803.07412.09131.85971.0845
C125.56194.98004.98204.75453.55652.86102.43702.11941.32761.08321.0845

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 110.475 H1 C4 H3 110.465
H1 C4 O5 106.003 H2 C4 H3 108.495
H2 C4 O5 110.704 H3 C4 O5 110.701
C4 O5 C7 114.752 O5 C7 O6 123.609
O5 C7 C9 110.569 O6 C7 C9 125.822
C7 C9 H8 116.893 C7 C9 C12 120.383
H8 C9 C12 122.724 C9 C12 H10 121.937
C9 C12 H11 119.896 H10 C12 H11 118.167
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.158      
2 H 0.165      
3 H 0.165      
4 C -0.297      
5 O -0.272      
6 O -0.392      
7 C 0.482      
8 H 0.148      
9 C -0.161      
10 H 0.159      
11 H 0.175      
12 C -0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.069 -1.506 -0.000 1.508
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.926 -0.648 0.001
y -0.648 -37.525 0.000
z 0.001 0.000 -35.274
Traceless
 xyz
x 10.474 -0.648 0.001
y -0.648 -6.925 0.000
z 0.001 0.000 -3.549
Polar
3z2-r2-7.097
x2-y211.600
xy-0.648
xz0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.798 0.454 -0.000
y 0.454 6.873 0.000
z -0.000 0.000 4.385


<r2> (average value of r2) Å2
<r2> 174.979
(<r2>)1/2 13.228