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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-306.360912
Energy at 298.15K-306.367334
Nuclear repulsion energy228.008270
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 B1B95/6-31+G**
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 3281 3138 2.04      
2 A 3226 3086 2.97      
3 A 3199 3060 13.96      
4 A 3179 3041 3.72      
5 A 3161 3023 16.48      
6 A 3077 2943 30.69      
7 A 1815 1736 218.59      
8 A 1718 1643 27.21      
9 A 1495 1430 7.54      
10 A 1475 1411 9.76      
11 A 1466 1403 54.44      
12 A 1431 1368 70.40      
13 A 1335 1277 136.68      
14 A 1246 1192 314.40      
15 A 1198 1146 10.88      
16 A 1171 1120 0.78      
17 A 1077 1030 3.80      
18 A 1053 1007 14.02      
19 A 1023 978 36.10      
20 A 1006 963 21.66      
21 A 879 841 11.27      
22 A 830 794 29.10      
23 A 668 639 5.33      
24 A 530 507 0.04      
25 A 472 452 1.52      
26 A 327 313 16.00      
27 A 209 200 4.93      
28 A 201 192 5.06      
29 A 98 94 3.50      
30 A 49 47 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20945.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 20036.8 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 B1B95/6-31+G**
ABC
0.34499 0.07796 0.06436

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.023 -0.889 -0.002
H2 -2.402 0.542 -0.887
H3 -2.404 0.539 0.889
C4 -2.291 -0.084 -0.000
O5 -1.014 -0.724 -0.000
O6 -0.063 1.318 0.000
C7 0.043 0.110 0.000
H8 1.241 -1.729 -0.000
C9 1.313 -0.647 -0.000
H10 3.423 -0.542 -0.000
H11 2.506 1.080 0.000
C12 2.481 -0.005 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79321.79311.08782.01633.69213.22444.34684.34356.45575.86895.5749
H21.79321.77571.09142.07762.61932.63644.38414.00105.99135.01644.9935
H31.79311.77571.09142.07762.62192.63784.38424.00185.99245.01844.9949
C41.08781.09141.09141.42832.63242.34163.89663.64825.73244.93594.7728
O52.01632.07762.07761.42832.25231.34582.46922.32864.44063.95453.5680
O63.69212.61932.62192.63242.25231.21273.31492.39963.95152.58012.8683
C73.22442.63642.63782.34161.34581.21272.19541.47943.44282.64702.4414
H84.34684.38414.38423.89662.46923.31492.19541.08442.48383.08002.1230
C94.34354.00104.00183.64822.32862.39961.47941.08442.11222.09821.3323
H106.45575.99135.99245.73244.44063.95153.44282.48382.11221.86281.0838
H115.86895.01645.01844.93593.95452.58012.64703.08002.09821.86281.0853
C125.57494.99354.99494.77283.56802.86832.44142.12301.33231.08381.0853

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 110.747 H1 C4 H3 110.739
H1 C4 O5 105.719 H2 C4 H3 108.885
H2 C4 O5 110.367 H3 C4 O5 110.366
C4 O5 C7 115.119 O5 C7 O6 123.278
O5 C7 C9 110.929 O6 C7 C9 125.793
C7 C9 H8 116.975 C7 C9 C12 120.432
H8 C9 C12 122.593 C9 C12 H10 121.566
C9 C12 H11 120.078 H10 C12 H11 118.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.160      
2 H 0.174      
3 H 0.174      
4 C -0.202      
5 O -0.292      
6 O -0.488      
7 C 0.186      
8 H 0.164      
9 C 0.141      
10 H 0.158      
11 H 0.183      
12 C -0.360      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.094 -1.568 -0.001 1.571
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.901 -0.736 0.000
y -0.736 -39.102 -0.001
z 0.000 -0.001 -36.501
Traceless
 xyz
x 11.900 -0.736 0.000
y -0.736 -7.901 -0.001
z 0.000 -0.001 -3.999
Polar
3z2-r2-7.999
x2-y213.201
xy-0.736
xz0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.318 0.553 -0.000
y 0.553 7.653 0.000
z -0.000 0.000 5.344


<r2> (average value of r2) Å2
<r2> 176.524
(<r2>)1/2 13.286