return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31G**
 hartrees
Energy at 0K-307.530442
Energy at 298.15K 
HF Energy-307.530442
Nuclear repulsion energy241.884813
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 B97D3/6-31G**
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' 3136 3136 10.49 69.98 0.68 0.81
2 A' 3085 3085 28.58 80.67 0.71 0.83
3 A' 3015 3015 6.39 109.71 0.00 0.01
4 A' 3009 3009 20.30 94.54 0.08 0.15
5 A' 3004 3004 20.56 134.69 0.01 0.01
6 A' 1779 1779 209.99 3.11 0.31 0.47
7 A' 1502 1502 4.23 1.23 0.66 0.80
8 A' 1484 1484 2.13 23.65 0.75 0.86
9 A' 1457 1457 11.66 15.24 0.72 0.84
10 A' 1406 1406 5.43 8.10 0.68 0.81
11 A' 1378 1378 27.21 2.14 0.70 0.83
12 A' 1364 1364 16.68 5.44 0.62 0.77
13 A' 1234 1234 382.88 0.50 0.06 0.11
14 A' 1116 1116 12.40 5.78 0.17 0.30
15 A' 1041 1041 123.95 2.54 0.70 0.83
16 A' 992 992 7.99 1.21 0.22 0.36
17 A' 925 925 7.40 1.84 0.17 0.29
18 A' 839 839 7.94 9.86 0.33 0.50
19 A' 623 623 4.12 8.45 0.32 0.49
20 A' 421 421 0.80 0.50 0.64 0.78
21 A' 361 361 8.85 3.29 0.32 0.48
22 A' 190 190 4.82 0.31 0.64 0.78
23 A" 3092 3092 42.59 29.20 0.75 0.86
24 A" 3086 3086 8.38 61.06 0.75 0.86
25 A" 3052 3052 13.09 83.55 0.75 0.86
26 A" 1473 1473 4.65 19.97 0.75 0.86
27 A" 1463 1463 7.17 16.71 0.75 0.86
28 A" 1271 1271 0.39 11.42 0.75 0.86
29 A" 1158 1158 3.95 1.85 0.75 0.86
30 A" 1038 1038 6.26 0.60 0.75 0.86
31 A" 799 799 0.86 0.18 0.75 0.86
32 A" 585 585 3.99 1.33 0.75 0.86
33 A" 265 265 0.92 0.01 0.75 0.86
34 A" 151 151 3.98 0.02 0.75 0.86
35 A" 55 55 0.13 0.35 0.75 0.86
36 A" 35 35 0.85 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25442.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 25442.3 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 B97D3/6-31G**
ABC
0.27645 0.06890 0.05693

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.322 0.039 0.000
C2 -0.915 -0.524 0.000
O3 0.000 0.487 0.000
O4 -0.622 -1.706 0.000
C5 1.392 0.065 0.000
C6 2.247 1.321 0.000
H7 -3.042 -0.784 0.000
H8 -2.476 0.671 0.884
H9 -2.476 0.671 -0.884
H10 1.573 -0.559 0.886
H11 1.573 -0.559 -0.886
H12 3.310 1.045 0.000
H13 2.048 1.931 -0.890
H14 2.048 1.931 0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51572.36512.43663.71464.74621.09291.09761.09764.03934.03935.72184.84524.8452
C21.51571.36311.21822.38113.66102.14262.15572.15572.64112.64114.50713.94973.9497
O32.36511.36312.27931.45462.39733.29642.63582.63582.08632.08633.35712.65982.6598
O42.43661.21822.27932.68224.17082.58973.14203.14202.63002.63004.79914.59924.5992
C53.71462.38111.45462.68221.51934.51454.01434.01431.09861.09862.15392.16902.1690
C64.74623.66102.39734.17081.51935.69254.84944.84942.18502.18501.09811.09731.0973
H71.09292.14263.29642.58974.51455.69251.79391.79394.70434.70436.61015.83725.8372
H81.09762.15572.63583.14204.01434.84941.79391.76774.23224.58725.86575.02074.6969
H91.09762.15572.63583.14204.01434.84941.79391.76774.58724.23225.86574.69695.0207
H104.03932.64112.08632.63001.09862.18504.70434.23224.58721.77122.52533.09542.5355
H114.03932.64112.08632.63001.09862.18504.70434.58724.23221.77122.52532.53553.0954
H125.72184.50713.35714.79912.15391.09816.61015.86575.86572.52532.52531.78031.7803
H134.84523.94972.65984.59922.16901.09735.83725.02074.69693.09542.53551.78031.7800
H144.84523.94972.65984.59922.16901.09735.83724.69695.02072.53553.09541.78031.7800

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 110.369 C1 C2 O4 125.714
C2 C1 H7 109.374 C2 C1 H8 110.130
C2 C1 H9 110.130 C2 O3 C5 115.320
O3 C2 O4 123.917 O3 C5 C6 107.415
O3 C5 H10 108.794 O3 C5 H11 108.794
C5 C6 H12 109.713 C5 C6 H13 110.951
C5 C6 H14 110.951 C6 C5 H10 112.161
C6 C5 H11 112.161 H7 C1 H8 109.956
H7 C1 H9 109.956 H8 C1 H9 107.274
H10 C5 H11 107.434 H12 C6 H13 108.374
H12 C6 H14 108.374 H13 C6 H14 108.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.403      
2 C 0.562      
3 O -0.444      
4 O -0.454      
5 C 0.034      
6 C -0.358      
7 H 0.146      
8 H 0.146      
9 H 0.146      
10 H 0.126      
11 H 0.126      
12 H 0.118      
13 H 0.128      
14 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.351 1.907 0.000 1.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.135 -0.985 0.000
y -0.985 -41.706 0.000
z 0.000 0.000 -35.072
Traceless
 xyz
x 8.254 -0.985 0.000
y -0.985 -9.102 0.000
z 0.000 0.000 0.848
Polar
3z2-r21.697
x2-y211.571
xy-0.985
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.079 0.553 0.000
y 0.553 7.582 0.000
z 0.000 0.000 5.785


<r2> (average value of r2) Å2
<r2> 203.224
(<r2>)1/2 14.256