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

using model chemistry: B3PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-307.609146
Energy at 298.15K 
HF Energy-307.609146
Nuclear repulsion energy243.506442
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/cc-pVDZ
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' 3196 3084 4.30      
2 A' 3144 3034 18.22      
3 A' 3067 2960 2.90      
4 A' 3059 2952 15.25      
5 A' 3054 2948 18.64      
6 A' 1840 1776 244.53      
7 A' 1493 1440 5.77      
8 A' 1470 1419 2.22      
9 A' 1438 1388 14.92      
10 A' 1416 1366 8.03      
11 A' 1383 1335 90.07      
12 A' 1360 1312 28.23      
13 A' 1278 1233 382.93      
14 A' 1135 1096 13.23      
15 A' 1091 1053 91.36      
16 A' 1002 967 10.03      
17 A' 963 929 4.67      
18 A' 867 837 7.13      
19 A' 644 621 6.78      
20 A' 425 411 0.74      
21 A' 369 356 9.78      
22 A' 193 187 4.71      
23 A" 3148 3038 9.46      
24 A" 3148 3038 21.21      
25 A" 3105 2996 12.16      
26 A" 1455 1404 6.70      
27 A" 1444 1393 9.00      
28 A" 1280 1235 0.91      
29 A" 1164 1123 4.57      
30 A" 1048 1011 7.69      
31 A" 804 776 1.32      
32 A" 604 582 3.76      
33 A" 267 258 1.00      
34 A" 153 148 3.86      
35 A" 59 57 0.00      
36 A" 49 47 1.17      

Unscaled Zero Point Vibrational Energy (zpe) 25807.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 24903.7 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 B3PW91/cc-pVDZ
ABC
0.28089 0.06989 0.05780

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.308 0.032 0.000
C2 -0.908 -0.518 0.000
O3 0.000 0.481 0.000
O4 -0.610 -1.689 0.000
C5 1.378 0.066 0.000
C6 2.230 1.313 0.000
H7 -3.027 -0.795 0.000
H8 -2.463 0.667 0.885
H9 -2.463 0.667 -0.885
H10 1.562 -0.562 0.886
H11 1.562 -0.562 -0.886
H12 3.296 1.039 0.000
H13 2.032 1.927 -0.892
H14 2.032 1.927 0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50442.35152.41773.68594.71601.09551.10021.10024.01484.01485.69444.81914.8191
C21.50441.34971.20852.35893.63332.13702.14592.14592.62472.62474.48333.92613.9261
O32.35151.34972.25421.43872.38063.28472.62382.62382.07702.07703.34342.64862.6486
O42.41771.20852.25422.65184.13312.57683.12503.12502.60282.60284.76504.56644.5664
C53.68592.35891.43872.65181.51074.48783.98683.98681.10191.10192.15142.16472.1647
C64.71603.63332.38064.13311.51075.66414.81974.81972.17912.17911.10071.10051.1005
H71.09552.13703.28472.57684.48785.66411.79931.79934.67974.67976.58395.81345.8134
H81.10022.14592.62383.12503.98684.81971.79931.77054.20874.56635.83904.99514.6684
H91.10022.14592.62383.12503.98684.81971.79931.77054.56634.20875.83904.66844.9951
H104.01482.62472.07702.60281.10192.17914.67974.20874.56631.77232.52133.09472.5331
H114.01482.62472.07702.60281.10192.17914.67974.56634.20871.77232.52132.53313.0947
H125.69444.48333.34344.76502.15141.10076.58395.83905.83902.52132.52131.78381.7838
H134.81913.92612.64864.56642.16471.10055.81344.99514.66843.09472.53311.78381.7832
H144.81913.92612.64864.56642.16471.10055.81344.66844.99512.53313.09471.78381.7832

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 110.840 C1 C2 O4 125.693
C2 C1 H7 109.560 C2 C1 H8 109.986
C2 C1 H9 109.986 C2 O3 C5 115.517
O3 C2 O4 123.467 O3 C5 C6 107.612
O3 C5 H10 108.960 O3 C5 H11 108.960
C5 C6 H12 109.954 C5 C6 H13 111.015
C5 C6 H14 111.015 C6 C5 H10 112.091
C6 C5 H11 112.091 H7 C1 H8 110.066
H7 C1 H9 110.066 H8 C1 H9 107.147
H10 C5 H11 107.064 H12 C6 H13 108.268
H12 C6 H14 108.268 H13 C6 H14 108.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.050      
2 C 0.144      
3 O -0.281      
4 O -0.261      
5 C 0.061      
6 C -0.089      
7 H 0.067      
8 H 0.074      
9 H 0.074      
10 H 0.053      
11 H 0.053      
12 H 0.048      
13 H 0.055      
14 H 0.055      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.256 1.883 0.000 1.901
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.393 -1.030 0.000
y -1.030 -41.821 0.000
z 0.000 0.000 -35.158
Traceless
 xyz
x 8.097 -1.030 0.000
y -1.030 -9.045 0.000
z 0.000 0.000 0.948
Polar
3z2-r21.896
x2-y211.428
xy-1.030
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.985 0.502 0.000
y 0.502 7.544 0.000
z 0.000 0.000 5.840


<r2> (average value of r2) Å2
<r2> 200.828
(<r2>)1/2 14.171