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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at G4
 hartrees
Energy at 0K-306.310613
Energy at 298.15K-306.302978
HF Energy-306.492502
Nuclear repulsion energy227.673952
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 B3LYP/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 3252 3138 2.54      
2 A 3198 3087 3.91      
3 A 3159 3048 18.48      
4 A 3158 3048 2.01      
5 A 3124 3015 19.21      
6 A 3051 2944 28.60      
7 A 1804 1741 161.97      
8 A 1698 1639 26.50      
9 A 1497 1445 5.54      
10 A 1481 1430 6.16      
11 A 1474 1423 23.64      
12 A 1434 1384 61.78      
13 A 1329 1283 68.99      
14 A 1229 1186 325.03      
15 A 1207 1164 67.95      
16 A 1180 1138 1.02      
17 A 1078 1040 1.94      
18 A 1039 1003 21.00      
19 A 1034 998 15.47      
20 A 1006 971 13.95      
21 A 869 838 8.52      
22 A 837 808 23.80      
23 A 667 643 5.52      
24 A 536 517 0.22      
25 A 475 458 1.53      
26 A 338 327 16.08      
27 A 220 212 3.35      
28 A 201 194 3.50      
29 A 124 120 0.16      
30 A 100 97 2.71      

Unscaled Zero Point Vibrational Energy (zpe) 20899.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 20167.8 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 B3LYP/6-31G(2df,p)
ABC
0.34366 0.07763 0.06409

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.027 -0.900 -0.002
H2 -2.418 0.537 -0.886
H3 -2.420 0.534 0.889
C4 -2.297 -0.091 -0.000
O5 -1.013 -0.723 0.000
O6 -0.063 1.324 -0.000
C7 0.043 0.120 0.000
H8 1.232 -1.724 -0.000
C9 1.315 -0.643 -0.000
H10 3.427 -0.554 -0.000
H11 2.524 1.070 0.000
C12 2.487 -0.014 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79421.79411.09002.02243.70593.23524.33844.34976.46375.89025.5851
H21.79421.77501.09312.08542.63622.64834.38414.01376.01145.04835.0145
H31.79411.77501.09312.08542.63972.65034.38434.01496.01295.05095.0164
C41.09001.09311.09311.43152.64432.34923.88863.65375.74274.95834.7845
O52.02242.08542.08541.43152.25661.35112.45782.32884.44293.96503.5708
O63.70592.63622.63972.64432.25661.20823.31162.40133.96292.59872.8794
C73.23522.64832.65032.34921.35111.20822.19461.48343.45072.65642.4479
H84.33844.38414.38433.88862.45783.31162.19461.08432.48753.07862.1212
C94.34974.01374.01493.65372.32882.40131.48341.08432.11412.09691.3303
H106.46376.01146.01295.74274.44293.96293.45072.48752.11411.85871.0841
H115.89025.04835.05094.95833.96502.59872.65643.07862.09691.85871.0850
C125.58515.01455.01644.78453.57082.87942.44792.12121.33031.08411.0850

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 110.298 H1 C4 H3 110.284
H1 C4 O5 106.103 H2 C4 H3 108.543
H2 C4 O5 110.805 H3 C4 O5 110.807
C4 O5 C7 115.841 O5 C7 O6 124.164
O5 C7 C9 110.405 O6 C7 C9 125.431
C7 C9 H8 116.698 C7 C9 C12 120.797
H8 C9 C12 122.505 C9 C12 H10 121.854
C9 C12 H11 120.407 H10 C12 H11 117.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.132      
2 H 0.141      
3 H 0.141      
4 C -0.239      
5 O -0.236      
6 O -0.370      
7 C 0.437      
8 H 0.113      
9 C -0.114      
10 H 0.129      
11 H 0.144      
12 C -0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.086 -1.508 -0.000 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 176.815
(<r2>)1/2 13.297