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All results from a given calculation for C4H8O2 (Ethyl acetate)

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 CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-307.591134
Energy at 298.15K 
HF Energy-307.591134
Nuclear repulsion energy243.559365
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' 3200 3062 6.54      
2 A' 3151 3014 22.52      
3 A' 3081 2947 11.09      
4 A' 3080 2947 8.20      
5 A' 3071 2938 16.02      
6 A' 1849 1769 233.97      
7 A' 1542 1475 5.91      
8 A' 1523 1457 2.31      
9 A' 1495 1431 13.48      
10 A' 1450 1387 5.72      
11 A' 1424 1362 69.39      
12 A' 1403 1342 11.14      
13 A' 1300 1243 410.86      
14 A' 1152 1102 19.62      
15 A' 1098 1051 85.90      
16 A' 1023 978 5.68      
17 A' 964 922 4.17      
18 A' 875 838 7.27      
19 A' 644 616 6.43      
20 A' 429 410 0.84      
21 A' 370 354 9.89      
22 A' 194 185 5.27      
23 A" 3158 3021 34.78      
24 A" 3152 3015 4.76      
25 A" 3123 2987 9.54      
26 A" 1512 1447 6.46      
27 A" 1500 1435 9.18      
28 A" 1308 1251 0.52      
29 A" 1190 1139 4.75      
30 A" 1072 1026 8.32      
31 A" 816 781 1.00      
32 A" 607 581 4.88      
33 A" 268 256 1.03      
34 A" 155 149 4.15      
35 A" 66 63 0.00      
36 A" 58 55 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 26149.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25017.5 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
0.28070 0.06985 0.05774

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.029 0.000
C2 -0.906 -0.520 0.000
O3 0.000 0.479 0.000
O4 -0.609 -1.693 0.000
C5 1.379 0.068 0.000
C6 2.229 1.320 0.000
H7 -3.022 -0.795 0.000
H8 -2.468 0.659 0.882
H9 -2.468 0.659 -0.882
H10 1.564 -0.554 0.882
H11 1.564 -0.554 -0.882
H12 3.290 1.050 0.000
H13 2.029 1.929 -0.887
H14 2.029 1.929 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50702.35232.42013.68784.71751.09031.09481.09484.01444.01445.69104.81774.8177
C21.50701.34841.21012.35873.63432.13442.14652.14652.62242.62244.47943.92363.9236
O32.35231.34842.25581.43852.38193.27992.62682.62682.07132.07133.33902.64672.6467
O42.42011.21012.25582.65554.13882.57483.12483.12482.60702.60704.76674.56764.5676
C53.68782.35871.43852.65551.51324.48473.99023.99021.09531.09532.14852.16172.1617
C64.71753.63432.38194.13881.51325.66084.82404.82402.17532.17531.09531.09461.0946
H71.09032.13443.27992.57484.48475.66081.78851.78854.67614.67616.57615.80695.8069
H81.09482.14652.62683.12483.99024.82401.78851.76324.20994.56455.83804.99624.6725
H91.09482.14652.62683.12483.99024.82401.78851.76324.56454.20995.83804.67254.9962
H104.01442.62242.07132.60701.09532.17534.67614.20994.56451.76502.51583.08432.5259
H114.01442.62242.07132.60701.09532.17534.67614.56454.20991.76502.51582.52593.0843
H125.69104.47943.33904.76672.14851.09536.57615.83805.83802.51582.51581.77531.7753
H134.81773.92362.64674.56762.16171.09465.80694.99624.67253.08432.52591.77531.7748
H144.81773.92362.64674.56762.16171.09465.80694.67254.99622.52593.08431.77531.7748

picture of Ethyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 110.819 C1 C2 O4 125.572
C2 C1 H7 109.478 C2 C1 H8 110.166
C2 C1 H9 110.166 C2 O3 C5 115.597
O3 C2 O4 123.609 O3 C5 C6 107.573
O3 C5 H10 108.904 O3 C5 H11 108.904
C5 C6 H12 109.872 C5 C6 H13 110.958
C5 C6 H14 110.958 C6 C5 H10 112.018
C6 C5 H11 112.018 H7 C1 H8 109.869
H7 C1 H9 109.869 H8 C1 H9 107.268
H10 C5 H11 107.356 H12 C6 H13 108.320
H12 C6 H14 108.320 H13 C6 H14 108.328
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 C -0.598      
2 C 0.609      
3 O -0.450      
4 O -0.473      
5 C -0.085      
6 C -0.530      
7 H 0.207      
8 H 0.204      
9 H 0.204      
10 H 0.183      
11 H 0.183      
12 H 0.176      
13 H 0.184      
14 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.304 1.950 0.000 1.974
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.999 -1.001 0.000
y -1.001 -41.869 0.000
z 0.000 0.000 -34.985
Traceless
 xyz
x 8.428 -1.001 0.000
y -1.001 -9.377 0.000
z 0.000 0.000 0.949
Polar
3z2-r21.899
x2-y211.870
xy-1.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.497 0.474 0.000
y 0.474 7.311 0.000
z 0.000 0.000 5.623


<r2> (average value of r2) Å2
<r2> 200.800
(<r2>)1/2 14.170