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

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-305.922729
Energy at 298.15K 
HF Energy-305.922729
Nuclear repulsion energy241.645305
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 wB97X-D/3-21G*
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' 3217 3049 4.01 62.75 0.69 0.81
2 A' 3172 3006 16.04 66.31 0.72 0.84
3 A' 3107 2945 10.67 61.75 0.14 0.24
4 A' 3106 2943 0.01 123.56 0.01 0.02
5 A' 3095 2933 10.53 86.92 0.02 0.04
6 A' 1809 1715 160.76 1.94 0.56 0.72
7 A' 1582 1499 9.39 0.90 0.73 0.85
8 A' 1570 1488 5.37 30.73 0.75 0.86
9 A' 1534 1454 19.46 19.33 0.75 0.85
10 A' 1474 1397 15.62 5.13 0.69 0.82
11 A' 1454 1378 50.00 4.53 0.71 0.83
12 A' 1433 1358 0.28 4.08 0.72 0.83
13 A' 1279 1212 425.18 0.52 0.40 0.57
14 A' 1161 1101 14.48 6.64 0.16 0.28
15 A' 1086 1029 108.80 2.38 0.66 0.80
16 A' 1038 984 0.62 2.72 0.48 0.65
17 A' 946 896 2.16 1.45 0.54 0.70
18 A' 854 810 8.26 13.61 0.28 0.44
19 A' 639 605 6.21 9.44 0.33 0.50
20 A' 416 395 0.59 0.32 0.59 0.74
21 A' 364 345 13.26 2.70 0.37 0.54
22 A' 189 179 5.53 0.29 0.68 0.81
23 A" 3183 3017 25.22 17.16 0.75 0.86
24 A" 3173 3008 1.88 54.93 0.75 0.86
25 A" 3150 2985 6.78 83.82 0.75 0.86
26 A" 1558 1477 9.25 24.21 0.75 0.86
27 A" 1547 1466 13.12 21.67 0.75 0.86
28 A" 1327 1258 0.03 13.58 0.75 0.86
29 A" 1201 1139 6.07 3.63 0.75 0.86
30 A" 1112 1054 13.36 0.49 0.75 0.86
31 A" 855 810 2.65 0.09 0.75 0.86
32 A" 609 577 4.46 1.45 0.75 0.86
33 A" 259 245 1.75 0.00 0.75 0.86
34 A" 153 145 6.11 0.01 0.75 0.86
35 A" 78 74 0.99 0.14 0.75 0.86
36 A" 45 43 0.45 0.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26386.6 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 25009.2 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 wB97X-D/3-21G*
ABC
0.27200 0.06928 0.05698

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.317 0.057 0.000
C2 -0.928 -0.530 0.000
O3 0.000 0.480 0.000
O4 -0.618 -1.712 0.000
C5 1.409 0.049 0.000
C6 2.233 1.328 0.000
H7 -3.051 -0.748 0.000
H8 -2.446 0.688 0.883
H9 -2.446 0.688 -0.883
H10 1.598 -0.564 0.885
H11 1.598 -0.564 -0.885
H12 3.300 1.088 0.000
H13 2.001 1.922 -0.888
H14 2.001 1.922 0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50832.35552.45253.72654.72461.08891.09331.09334.06134.06135.71144.78674.7867
C21.50831.37121.22162.40753.66652.13462.13762.13762.67612.67614.52703.92113.9211
O32.35551.37122.27691.47382.38893.28882.60892.60892.10362.10363.35602.62122.6212
O42.45251.22162.27692.68494.16752.61723.14343.14342.64762.64764.81574.56584.5658
C53.72652.40751.47382.68491.52164.53104.00664.00661.09291.09292.15782.15522.1552
C64.72463.66652.38894.16751.52165.67744.80474.80472.18332.18331.09381.09261.0926
H71.08892.13463.28882.61724.53105.67741.79101.79104.73584.73586.61155.78255.7825
H81.09332.13762.60893.14344.00664.80471.79101.76654.23294.58755.82774.94314.6150
H91.09332.13762.60893.14344.00664.80471.79101.76654.58754.23295.82774.61504.9431
H104.06132.67612.10362.64761.09292.18334.73584.23294.58751.77072.53213.07942.5177
H114.06132.67612.10362.64761.09292.18334.73584.58754.23291.77072.53212.51773.0794
H125.71144.52703.35604.81572.15781.09386.61155.82775.82772.53212.53211.78061.7806
H134.78673.92112.62124.56582.15521.09265.78254.94314.61503.07942.51771.78061.7753
H144.78673.92112.62124.56582.15521.09265.78254.61504.94312.51773.07941.78061.7753

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 109.682 C1 C2 O4 127.577
C2 C1 H7 109.488 C2 C1 H8 109.463
C2 C1 H9 109.463 C2 O3 C5 115.564
O3 C2 O4 122.741 O3 C5 C6 105.775
O3 C5 H10 109.185 O3 C5 H11 109.185
C5 C6 H12 110.105 C5 C6 H13 109.974
C5 C6 H14 109.974 C6 C5 H10 112.205
C6 C5 H11 112.205 H7 C1 H8 110.312
H7 C1 H9 110.312 H8 C1 H9 107.775
H10 C5 H11 108.211 H12 C6 H13 109.051
H12 C6 H14 109.051 H13 C6 H14 108.656
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.694      
2 C 0.662      
3 O -0.534      
4 O -0.501      
5 C -0.183      
6 C -0.639      
7 H 0.246      
8 H 0.253      
9 H 0.253      
10 H 0.233      
11 H 0.233      
12 H 0.213      
13 H 0.229      
14 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.315 1.765 0.000 1.793
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.694 -1.135 0.000
y -1.135 -42.270 0.000
z 0.000 0.000 -35.140
Traceless
 xyz
x 9.011 -1.135 0.000
y -1.135 -9.853 0.000
z 0.000 0.000 0.842
Polar
3z2-r21.684
x2-y212.576
xy-1.135
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.879 0.460 0.000
y 0.460 6.723 0.000
z 0.000 0.000 5.062


<r2> (average value of r2) Å2
<r2> 202.847
(<r2>)1/2 14.242