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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-306.356083
Energy at 298.15K-306.362676
Nuclear repulsion energy227.698153
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 3276 3139 2.48      
2 A 3218 3084 3.35      
3 A 3187 3055 16.50      
4 A 3176 3044 4.17      
5 A 3152 3021 19.53      
6 A 3069 2942 30.07      
7 A 1829 1753 170.99      
8 A 1718 1647 28.97      
9 A 1505 1442 7.02      
10 A 1491 1429 7.24      
11 A 1479 1417 32.65      
12 A 1437 1377 75.61      
13 A 1338 1282 114.61      
14 A 1247 1195 320.34      
15 A 1208 1158 15.33      
16 A 1178 1129 0.49      
17 A 1080 1035 3.57      
18 A 1055 1011 13.29      
19 A 1029 986 28.21      
20 A 998 956 18.34      
21 A 880 843 9.85      
22 A 824 789 28.59      
23 A 671 643 5.08      
24 A 531 509 0.18      
25 A 476 456 1.34      
26 A 338 324 17.34      
27 A 220 211 3.91      
28 A 203 195 4.24      
29 A 125 119 0.14      
30 A 100 96 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 21017.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 20143.2 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 B3PW91/6-31G**
ABC
0.34311 0.07783 0.06421

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 3.027 -0.891 -0.001
H2 2.410 0.540 0.888
H3 2.410 0.541 -0.887
C4 2.292 -0.086 -0.000
O5 1.014 -0.726 0.000
O6 0.063 1.323 -0.000
C7 -0.042 0.114 -0.000
H8 -1.241 -1.731 -0.000
C9 -1.314 -0.647 -0.000
H10 -3.427 -0.545 -0.000
H11 -2.511 1.078 0.000
C12 -2.484 -0.008 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79381.79381.08992.01973.69983.22964.34984.34786.46385.87785.5813
H21.79381.77541.09312.08352.62932.64284.39044.00846.00375.02995.0043
H31.79381.77541.09312.08352.62822.64214.39024.00796.00315.02915.0037
C41.08991.09311.09311.42902.63732.34253.89663.64905.73764.94224.7764
O52.01972.08352.08351.42902.25901.34972.46862.32934.44523.96013.5709
O63.69982.62932.62822.63732.25901.21293.31982.40303.95812.58542.8733
C73.22962.64282.64212.34251.34971.21292.20011.48223.44892.65052.4449
H84.34984.39044.39023.89662.46863.31982.20011.08592.48743.08222.1240
C94.34784.00844.00793.64902.32932.40301.48221.08592.11602.09971.3331
H106.46386.00376.00315.73764.44523.95813.44892.48742.11601.86321.0853
H115.87785.02995.02914.94223.96012.58542.65053.08222.09971.86321.0863
C125.58135.00435.00374.77643.57092.87332.44492.12401.33311.08531.0863

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 110.510 H1 C4 H3 110.512
H1 C4 O5 105.827 H2 C4 H3 108.599
H2 C4 O5 110.696 H3 C4 O5 110.694
C4 O5 C7 114.893 O5 C7 O6 123.562
O5 C7 C9 110.585 O6 C7 C9 125.853
C7 C9 H8 117.055 C7 C9 C12 120.464
H8 C9 C12 122.482 C9 C12 H10 121.749
C9 C12 H11 120.072 H10 C12 H11 118.179
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 0.144      
2 H 0.154      
3 H 0.154      
4 C -0.154      
5 O -0.472      
6 O -0.493      
7 C 0.607      
8 H 0.144      
9 C -0.137      
10 H 0.141      
11 H 0.164      
12 C -0.254      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.097 -1.482 -0.000 1.485
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.503 0.723 -0.000
y 0.723 -37.842 0.001
z -0.000 0.001 -35.507
Traceless
 xyz
x 11.172 0.723 -0.000
y 0.723 -7.337 0.001
z -0.000 0.001 -3.834
Polar
3z2-r2-7.669
x2-y212.339
xy0.723
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> 176.371
(<r2>)1/2 13.280