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

using model chemistry: wB97X-D/CEP-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 wB97X-D/CEP-31G*
 hartrees
Energy at 0K-59.399814
Energy at 298.15K 
HF Energy-59.399814
Nuclear repulsion energy135.235779
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/CEP-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' 3209 3209 20.76 62.62 0.68 0.81
2 A' 3160 3160 51.80 65.62 0.70 0.82
3 A' 3106 3106 26.59 111.97 0.08 0.15
4 A' 3101 3101 6.79 155.46 0.01 0.02
5 A' 3086 3086 28.08 122.22 0.01 0.03
6 A' 1841 1841 301.84 4.02 0.37 0.54
7 A' 1529 1529 6.80 1.48 0.66 0.80
8 A' 1508 1508 3.22 18.61 0.72 0.83
9 A' 1483 1483 14.25 11.44 0.73 0.85
10 A' 1455 1455 3.10 4.97 0.26 0.42
11 A' 1423 1423 112.79 1.82 0.64 0.78
12 A' 1393 1393 5.88 1.62 0.52 0.69
13 A' 1299 1299 413.30 1.14 0.67 0.80
14 A' 1145 1145 19.85 11.96 0.21 0.34
15 A' 1095 1095 94.27 4.31 0.75 0.86
16 A' 1017 1017 4.49 1.99 0.39 0.56
17 A' 963 963 6.89 3.26 0.37 0.54
18 A' 873 873 8.36 11.31 0.31 0.48
19 A' 637 637 7.38 8.80 0.33 0.50
20 A' 423 423 0.84 0.35 0.68 0.81
21 A' 368 368 10.24 2.78 0.34 0.50
22 A' 195 195 5.52 0.43 0.71 0.83
23 A" 3175 3175 54.80 53.24 0.75 0.86
24 A" 3174 3174 43.30 5.29 0.75 0.86
25 A" 3149 3149 2.61 92.07 0.75 0.86
26 A" 1498 1498 7.00 14.88 0.75 0.86
27 A" 1489 1489 10.88 13.44 0.75 0.86
28 A" 1307 1307 0.60 17.18 0.75 0.86
29 A" 1179 1179 5.12 0.85 0.75 0.86
30 A" 1068 1068 8.06 2.70 0.75 0.86
31 A" 804 804 1.49 0.09 0.75 0.86
32 A" 606 606 5.01 1.78 0.75 0.86
33 A" 267 267 1.26 0.01 0.75 0.86
34 A" 153 153 5.99 0.02 0.75 0.86
35 A" 75 75 0.39 0.23 0.75 0.86
36 A" 19 19 0.57 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26135.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26135.6 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/CEP-31G*
ABC
0.27533 0.06888 0.05688

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.331 0.029 0.000
C2 -0.909 -0.525 0.000
O3 0.000 0.479 0.000
O4 -0.608 -1.707 0.000
C5 1.391 0.065 0.000
C6 2.240 1.340 0.000
H7 -3.044 -0.804 0.000
H8 -2.481 0.660 0.889
H9 -2.481 0.660 -0.889
H10 1.577 -0.555 0.890
H11 1.577 -0.555 -0.890
H12 3.309 1.072 0.000
H13 2.030 1.946 -0.894
H14 2.030 1.946 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.52652.37402.44643.72204.75471.09661.10031.10034.05064.05065.73524.84664.8466
C21.52651.35441.21982.37403.65912.15332.16032.16032.64072.64074.50963.94223.9422
O32.37401.35442.26931.45142.39923.30332.64192.64192.08532.08533.36132.65922.6592
O42.44641.21982.26932.67094.17012.59813.14683.14682.62582.62584.80234.59384.5938
C53.72202.37401.45142.67091.53164.51904.01724.01721.10001.10002.16632.17912.1791
C64.75473.65912.39924.17011.53165.70174.85184.85182.19502.19501.10191.10081.1008
H71.09662.15333.30332.59814.51905.70171.80261.80264.71274.71276.62375.83985.8398
H81.10032.16032.64193.14684.01724.85181.80261.77854.23634.59475.87235.01844.6908
H91.10032.16032.64193.14684.01724.85181.80261.77854.59474.23635.87234.69085.0184
H104.05062.64072.08532.62581.10002.19504.71274.23634.59471.77962.53683.10512.5415
H114.05062.64072.08532.62581.10002.19504.71274.59474.23631.77962.53682.54153.1051
H125.73524.50963.36134.80232.16631.10196.62375.87235.87232.53682.53681.78881.7888
H134.84663.94222.65924.59382.17911.10085.83985.01844.69083.10512.54151.78881.7884
H144.84663.94222.65924.59382.17911.10085.83984.69085.01842.54153.10511.78881.7884

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 110.845 C1 C2 O4 125.580
C2 C1 H7 109.253 C2 C1 H8 109.590
C2 C1 H9 109.590 C2 O3 C5 115.539
O3 C2 O4 123.576 O3 C5 C6 107.053
O3 C5 H10 108.860 O3 C5 H11 108.860
C5 C6 H12 109.607 C5 C6 H13 110.676
C5 C6 H14 110.676 C6 C5 H10 112.003
C6 C5 H11 112.003 H7 C1 H8 110.275
H7 C1 H9 110.275 H8 C1 H9 107.840
H10 C5 H11 107.985 H12 C6 H13 108.594
H12 C6 H14 108.594 H13 C6 H14 108.637
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.275      
2 C -0.182      
3 O -0.124      
4 O -0.135      
5 C -0.239      
6 C -0.266      
7 H 0.171      
8 H 0.150      
9 H 0.150      
10 H 0.164      
11 H 0.164      
12 H 0.139      
13 H 0.142      
14 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.392 2.070 0.000 2.107
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.355 -1.127 0.000
y -1.127 -42.504 0.000
z 0.000 0.000 -34.726
Traceless
 xyz
x 9.260 -1.127 0.000
y -1.127 -10.463 0.000
z 0.000 0.000 1.203
Polar
3z2-r22.406
x2-y213.149
xy-1.127
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.482 0.509 0.000
y 0.509 7.456 0.000
z 0.000 0.000 5.558


<r2> (average value of r2) Å2
<r2> 165.771
(<r2>)1/2 12.875