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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-56.687835
Energy at 298.15K-56.694670
Nuclear repulsion energy122.380872
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 3409 3111 9.34      
2 A 3376 3081 2.90      
3 A 3336 3044 26.34      
4 A 3303 3014 36.28      
5 A 3295 3007 6.43      
6 A 3195 2916 41.80      
7 A 1815 1656 203.76      
8 A 1803 1645 115.93      
9 A 1632 1489 8.82      
10 A 1622 1480 9.55      
11 A 1599 1459 35.75      
12 A 1561 1424 99.95      
13 A 1436 1310 85.64      
14 A 1349 1231 520.23      
15 A 1304 1190 17.76      
16 A 1272 1160 3.23      
17 A 1178 1075 16.91      
18 A 1167 1065 33.01      
19 A 1112 1015 52.34      
20 A 1080 986 30.01      
21 A 906 827 11.07      
22 A 896 818 55.44      
23 A 708 646 12.61      
24 A 566 516 1.22      
25 A 494 451 1.50      
26 A 344 314 21.17      
27 A 224 205 8.65      
28 A 201 184 9.32      
29 A 129 118 0.29      
30 A 102 93 6.17      

Unscaled Zero Point Vibrational Energy (zpe) 22206.8 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 20263.7 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
0.34093 0.07519 0.06232

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 3.007 -0.941 -0.001
H2 2.463 0.505 0.884
H3 2.462 0.506 -0.884
C4 2.328 -0.103 -0.000
O5 0.999 -0.694 0.000
O6 0.009 1.344 0.000
C7 -0.088 0.119 0.000
H8 -1.256 -1.722 0.000
C9 -1.358 -0.654 0.000
H10 -3.463 -0.595 -0.000
H11 -2.610 1.038 -0.000
C12 -2.544 -0.036 -0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.78031.78031.07822.02313.76963.27084.33384.37436.47855.95565.6240
H21.78031.76841.08192.08882.74082.72714.42424.09006.09165.17785.1134
H31.78031.76841.08192.08882.73932.72634.42394.08936.09075.17655.1124
C41.07821.08191.08191.45442.73382.42563.93253.72695.81135.06854.8723
O52.02312.08882.08881.45442.26591.35692.47822.35724.46244.00323.6033
O63.76962.74082.73932.73382.26591.22883.31672.42113.97632.63702.9019
C73.27082.72712.72632.42561.35691.22882.18071.48743.44982.68502.4613
H84.33384.42424.42393.93252.47823.31672.18071.07262.47733.07422.1215
C94.37434.09004.08933.72692.35722.42111.48741.07262.10522.10511.3373
H106.47856.09166.09075.81134.46243.97633.44982.47732.10521.84221.0755
H115.95565.17785.17655.06854.00322.63702.68503.07422.10511.84221.0759
C125.62405.11345.11244.87233.60332.90192.46132.12151.33731.07551.0759

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 111.011 H1 C4 H3 111.014
H1 C4 O5 105.065 H2 C4 H3 109.628
H2 C4 O5 110.021 H3 C4 O5 110.023
C4 O5 C7 119.226 O5 C7 O6 122.323
O5 C7 C9 111.858 O6 C7 C9 125.819
C7 C9 H8 115.871 C7 C9 C12 121.139
H8 C9 C12 122.990 C9 C12 H10 121.125
C9 C12 H11 121.080 H10 C12 H11 117.795
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 0.175      
2 H 0.172      
3 H 0.172      
4 C -0.201      
5 O -0.382      
6 O -0.321      
7 C 0.195      
8 H 0.213      
9 C -0.009      
10 H 0.157      
11 H 0.199      
12 C -0.371      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.059 -1.765 -0.001 1.766
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.649 1.098 -0.001
y 1.098 -41.338 0.000
z -0.001 0.000 -36.879
Traceless
 xyz
x 15.460 1.098 -0.001
y 1.098 -11.073 0.000
z -0.001 0.000 -4.386
Polar
3z2-r2-8.773
x2-y217.689
xy1.098
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.027 -0.693 0.000
y -0.693 6.783 0.000
z 0.000 0.000 4.284


<r2> (average value of r2) Å2
<r2> 146.619
(<r2>)1/2 12.109