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

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-307.445294
Energy at 298.15K 
HF Energy-307.445294
Nuclear repulsion energy242.029522
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 PBEPBE/TZVP
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' 3106 3071 5.15 64.44 0.68 0.81
2 A' 3056 3022 19.43 79.37 0.70 0.82
3 A' 2993 2960 2.50 149.45 0.01 0.01
4 A' 2982 2949 17.96 32.49 0.12 0.22
5 A' 2981 2947 13.51 249.13 0.01 0.02
6 A' 1742 1723 242.59 4.52 0.21 0.35
7 A' 1468 1452 7.17 1.34 0.72 0.84
8 A' 1449 1433 3.30 14.73 0.75 0.86
9 A' 1424 1408 14.57 9.15 0.65 0.78
10 A' 1378 1362 6.99 4.46 0.70 0.83
11 A' 1352 1337 35.27 0.47 0.56 0.72
12 A' 1339 1324 21.12 3.98 0.70 0.82
13 A' 1212 1199 368.71 0.52 0.15 0.25
14 A' 1105 1092 6.28 6.68 0.13 0.22
15 A' 1031 1019 123.26 2.71 0.69 0.82
16 A' 979 968 13.08 1.08 0.18 0.31
17 A' 923 913 11.83 2.34 0.10 0.18
18 A' 830 821 8.81 7.71 0.31 0.47
19 A' 623 616 3.30 8.65 0.32 0.48
20 A' 421 416 0.78 0.49 0.62 0.76
21 A' 358 354 8.12 3.74 0.30 0.46
22 A' 188 186 5.17 0.37 0.61 0.76
23 A" 3062 3028 29.13 29.76 0.75 0.86
24 A" 3059 3025 3.62 56.82 0.75 0.86
25 A" 3020 2986 9.05 80.45 0.75 0.86
26 A" 1438 1422 7.72 11.10 0.75 0.86
27 A" 1428 1412 10.66 9.04 0.75 0.86
28 A" 1252 1238 0.60 9.67 0.75 0.86
29 A" 1137 1124 3.66 1.11 0.75 0.86
30 A" 1024 1013 5.22 0.15 0.75 0.86
31 A" 788 779 1.15 0.19 0.75 0.86
32 A" 585 578 3.22 1.47 0.75 0.86
33 A" 260 258 1.01 0.07 0.75 0.86
34 A" 152 151 4.70 0.03 0.75 0.86
35 A" 57 57 0.40 0.38 0.75 0.86
36 A" 28i 28i 0.51 0.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25086.9 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 24805.9 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 PBEPBE/TZVP
ABC
0.27797 0.06888 0.05698

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.321 0.037 0.000
C2 -0.918 -0.521 0.000
O3 0.000 0.486 0.000
O4 -0.624 -1.702 0.000
C5 1.393 0.067 0.000
C6 2.248 1.317 0.000
H7 -3.040 -0.788 0.000
H8 -2.478 0.670 0.885
H9 -2.478 0.670 -0.885
H10 1.575 -0.559 0.887
H11 1.575 -0.559 -0.887
H12 3.312 1.037 0.000
H13 2.055 1.929 -0.892
H14 2.055 1.929 0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50962.36382.42943.71434.74491.09461.09921.09924.03954.03955.72084.84974.8497
C21.50961.36291.21642.38523.66132.13852.15252.15252.64652.64654.50803.95463.9546
O32.36381.36292.27461.45502.39693.29622.63732.63732.08772.08773.35752.66462.6646
O42.42941.21642.27462.68254.16642.58313.13733.13732.63192.63194.79484.59924.5992
C53.71432.38521.45502.68251.51434.51514.01634.01631.10081.10082.14992.16832.1683
C64.74493.66132.39694.16641.51435.69184.85134.85132.18142.18141.09981.09901.0990
H71.09462.13853.29622.58314.51515.69181.79581.79584.70494.70496.60905.84255.8425
H81.09922.15252.63733.13734.01634.85131.79581.77004.23444.59045.86825.02824.7039
H91.09922.15252.63733.13734.01634.85131.79581.77004.59044.23445.86824.70395.0282
H104.03952.64652.08772.63191.10082.18144.70494.23444.59041.77492.52033.09612.5340
H114.03952.64652.08772.63191.10082.18144.70494.59044.23441.77492.52032.53403.0961
H125.72084.50803.35754.79482.14991.09986.60905.86825.86822.52032.52031.78101.7810
H134.84973.95462.66464.59922.16831.09905.84255.02824.70393.09612.53401.78101.7830
H144.84973.95462.66464.59922.16831.09905.84254.70395.02822.53403.09611.78101.7830

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 110.650 C1 C2 O4 125.713
C2 C1 H7 109.374 C2 C1 H8 110.205
C2 C1 H9 110.205 C2 O3 C5 115.617
O3 C2 O4 123.637 O3 C5 C6 107.630
O3 C5 H10 108.749 O3 C5 H11 108.749
C5 C6 H12 109.637 C5 C6 H13 111.144
C5 C6 H14 111.144 C6 C5 H10 112.089
C6 C5 H11 112.089 H7 C1 H8 109.892
H7 C1 H9 109.892 H8 C1 H9 107.249
H10 C5 H11 107.451 H12 C6 H13 108.194
H12 C6 H14 108.194 H13 C6 H14 108.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.389      
2 C 0.184      
3 O -0.150      
4 O -0.274      
5 C -0.125      
6 C -0.330      
7 H 0.152      
8 H 0.143      
9 H 0.143      
10 H 0.135      
11 H 0.135      
12 H 0.122      
13 H 0.127      
14 H 0.127      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.354 1.974 0.000 2.005
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.841 -1.043 0.000
y -1.043 -43.324 0.000
z 0.000 0.000 -36.022
Traceless
 xyz
x 8.832 -1.043 0.000
y -1.043 -9.893 0.000
z 0.000 0.000 1.060
Polar
3z2-r22.121
x2-y212.483
xy-1.043
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.117 0.580 0.000
y 0.580 8.686 0.000
z 0.000 0.000 6.722


<r2> (average value of r2) Å2
<r2> 203.808
(<r2>)1/2 14.276