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

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-56.838688
Energy at 298.15K-56.845597
Nuclear repulsion energy123.967815
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 HF/CEP-121G*
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 3424 3093 7.17      
2 A 3379 3053 5.41      
3 A 3336 3014 36.82      
4 A 3323 3002 10.58      
5 A 3319 2999 40.48      
6 A 3230 2918 50.24      
7 A 1942 1754 315.39      
8 A 1821 1645 50.70      
9 A 1632 1474 7.74      
10 A 1625 1468 4.84      
11 A 1614 1458 20.11      
12 A 1554 1404 130.72      
13 A 1439 1300 209.21      
14 A 1363 1231 387.28      
15 A 1324 1196 72.30      
16 A 1290 1165 4.06      
17 A 1163 1051 3.44      
18 A 1130 1021 47.17      
19 A 1122 1013 26.06      
20 A 1106 999 23.74      
21 A 943 852 11.99      
22 A 909 821 48.37      
23 A 718 648 9.27      
24 A 570 515 0.05      
25 A 499 450 2.52      
26 A 365 330 18.21      
27 A 236 213 5.49      
28 A 205 185 4.62      
29 A 163 147 1.16      
30 A 95 86 3.79      

Unscaled Zero Point Vibrational Energy (zpe) 22416.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 20250.8 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 HF/CEP-121G*
ABC
0.35049 0.07741 0.06417

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.984 -0.911 -0.003
H2 -2.402 0.521 -0.882
H3 -2.404 0.516 0.885
C4 -2.275 -0.094 -0.000
O5 -0.986 -0.704 0.001
O6 -0.031 1.311 -0.000
C7 0.063 0.118 -0.000
H8 1.275 -1.722 -0.001
C9 1.350 -0.648 -0.000
H10 3.446 -0.556 0.000
H11 2.558 1.062 0.001
C12 2.515 -0.014 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.77741.77741.08102.00913.69533.21554.33574.34206.43945.88295.5715
H21.77741.76711.08262.06962.65012.64814.39604.02756.01075.06705.0236
H31.77741.76711.08272.06922.65512.65094.39664.02936.01285.07055.0262
C41.08101.08261.08271.42622.64782.34733.90553.66735.73934.96994.7907
O52.00912.06962.06921.42622.22921.33182.47952.33644.43373.95943.5678
O63.69532.65012.65512.64782.22921.19643.30202.39723.94602.60122.8698
C73.21552.64812.65092.34731.33181.19642.20361.49853.44962.66842.4559
H84.33574.39604.39663.90552.47953.30202.20361.07592.46383.06542.1105
C94.34204.02754.02933.66732.33642.39721.49851.07592.09762.09431.3265
H106.43946.01076.01285.73934.43373.94603.44962.46382.09761.84531.0771
H115.88295.06705.07054.96993.95942.60122.66843.06542.09431.84531.0767
C125.57155.02365.02624.79073.56782.86982.45592.11051.32651.07711.0767

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 110.469 H1 C4 H3 110.458
H1 C4 O5 105.685 H2 C4 H3 109.393
H2 C4 O5 110.411 H3 C4 O5 110.382
C4 O5 C7 116.617 O5 C7 O6 123.615
O5 C7 C9 111.134 O6 C7 C9 125.251
C7 C9 H8 116.776 C7 C9 C12 120.640
H8 C9 C12 122.585 C9 C12 H10 121.191
C9 C12 H11 120.904 H10 C12 H11 117.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.183      
2 H 0.178      
3 H 0.178      
4 C -0.269      
5 O -0.319      
6 O -0.430      
7 C 0.412      
8 H 0.239      
9 C -0.144      
10 H 0.196      
11 H 0.232      
12 C -0.457      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.006 -1.681 -0.001 1.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.948 -0.609 0.004
y -0.609 -39.312 0.003
z 0.004 0.003 -36.475
Traceless
 xyz
x 12.945 -0.609 0.004
y -0.609 -8.600 0.003
z 0.004 0.003 -4.345
Polar
3z2-r2-8.690
x2-y214.364
xy-0.609
xz0.004
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.893 0.696 0.000
y 0.696 6.779 0.001
z 0.000 0.001 4.572


<r2> (average value of r2) Å2
<r2> 142.998
(<r2>)1/2 11.958