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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-307.711812
Energy at 298.15K 
HF Energy-307.711812
Nuclear repulsion energy244.502451
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 mPW1PW91/6-311G**
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' 3195 3057 6.60 63.64 0.69 0.82
2 A' 3144 3008 23.63 75.36 0.70 0.83
3 A' 3078 2945 4.34 94.58 0.00 0.00
4 A' 3076 2943 14.55 134.35 0.06 0.11
5 A' 3065 2932 16.39 131.69 0.01 0.01
6 A' 1850 1770 265.40 3.22 0.37 0.54
7 A' 1526 1460 6.73 1.86 0.75 0.86
8 A' 1502 1437 3.15 15.06 0.75 0.86
9 A' 1472 1409 14.58 9.81 0.69 0.82
10 A' 1436 1374 7.66 2.79 0.70 0.82
11 A' 1406 1345 81.44 1.36 0.75 0.86
12 A' 1388 1328 27.79 1.96 0.74 0.85
13 A' 1290 1234 409.02 0.44 0.35 0.52
14 A' 1149 1099 16.27 6.34 0.15 0.26
15 A' 1097 1050 96.68 2.51 0.75 0.86
16 A' 1016 972 8.31 1.28 0.23 0.37
17 A' 968 926 5.20 2.03 0.15 0.26
18 A' 877 839 8.16 6.82 0.33 0.50
19 A' 650 622 6.92 7.51 0.33 0.50
20 A' 431 412 0.82 0.29 0.64 0.78
21 A' 373 357 10.07 2.78 0.32 0.48
22 A' 195 186 5.07 0.36 0.67 0.80
23 A" 3150 3014 40.32 31.13 0.75 0.86
24 A" 3150 3013 1.62 47.37 0.75 0.86
25 A" 3115 2981 7.46 88.66 0.75 0.86
26 A" 1487 1423 8.08 11.02 0.75 0.86
27 A" 1477 1413 10.31 9.77 0.75 0.86
28 A" 1304 1248 1.23 7.82 0.75 0.86
29 A" 1184 1132 4.50 0.60 0.75 0.86
30 A" 1066 1020 7.27 0.14 0.75 0.86
31 A" 812 777 1.00 0.17 0.75 0.86
32 A" 611 585 4.85 1.00 0.75 0.86
33 A" 267 255 1.10 0.03 0.75 0.86
34 A" 155 149 4.53 0.03 0.75 0.86
35 A" 60 57 0.21 0.24 0.75 0.86
36 A" 39 37 0.82 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26030.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 24903.3 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 mPW1PW91/6-311G**
ABC
0.28357 0.07029 0.05816

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.302 0.030 0.000
C2 -0.904 -0.518 0.000
O3 0.000 0.475 0.000
O4 -0.609 -1.683 0.000
C5 1.377 0.066 0.000
C6 2.222 1.315 0.000
H7 -3.013 -0.792 0.000
H8 -2.454 0.658 0.879
H9 -2.454 0.658 -0.879
H10 1.560 -0.554 0.880
H11 1.560 -0.554 -0.880
H12 3.281 1.048 0.000
H13 2.020 1.921 -0.885
H14 2.020 1.921 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50102.34442.40763.67864.70241.08671.09111.09114.00394.00395.67434.79974.7997
C21.50101.34321.20122.35463.62372.12632.13472.13472.61742.61744.46833.90943.9094
O32.34441.34322.24201.43622.37513.26842.61302.61302.06602.06603.33022.63702.6370
O42.40761.20122.24202.64604.12292.56333.10693.10692.59932.59934.75254.54754.5475
C53.67862.35461.43622.64601.50784.47263.97453.97451.09221.09222.14222.15342.1534
C64.70243.62372.37514.12291.50785.64264.80274.80272.16892.16891.09191.09121.0912
H71.08672.12633.26842.56334.47265.64261.78521.78524.66334.66336.55685.78555.7855
H81.09112.13472.61303.10693.97454.80271.78521.75844.19324.54745.81454.97234.6489
H91.09112.13472.61303.10693.97454.80271.78521.75844.54744.19325.81454.64894.9723
H104.00392.61742.06602.59931.09222.16894.66334.19324.54741.76052.51003.07422.5170
H114.00392.61742.06602.59931.09222.16894.66334.54744.19321.76052.51002.51703.0742
H125.67434.46833.33024.75252.14221.09196.55685.81455.81452.51002.51001.77001.7700
H134.79973.90942.63704.54752.15341.09125.78554.97234.64893.07422.51701.77001.7696
H144.79973.90942.63704.54752.15341.09125.78554.64894.97232.51703.07421.77001.7696

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 110.908 C1 C2 O4 125.628
C2 C1 H7 109.464 C2 C1 H8 109.874
C2 C1 H9 109.874 C2 O3 C5 115.770
O3 C2 O4 123.464 O3 C5 C6 107.536
O3 C5 H10 108.837 O3 C5 H11 108.837
C5 C6 H12 109.946 C5 C6 H13 110.879
C5 C6 H14 110.879 C6 C5 H10 112.074
C6 C5 H11 112.074 H7 C1 H8 110.117
H7 C1 H9 110.117 H8 C1 H9 107.371
H10 C5 H11 107.409 H12 C6 H13 108.347
H12 C6 H14 108.347 H13 C6 H14 108.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.332      
2 C 0.329      
3 O -0.332      
4 O -0.362      
5 C -0.060      
6 C -0.347      
7 H 0.151      
8 H 0.148      
9 H 0.148      
10 H 0.137      
11 H 0.137      
12 H 0.125      
13 H 0.130      
14 H 0.130      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.274 1.922 0.000 1.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.406 -1.056 0.000
y -1.056 -42.494 0.000
z 0.000 0.000 -35.336
Traceless
 xyz
x 8.509 -1.056 0.000
y -1.056 -9.623 0.000
z 0.000 0.000 1.114
Polar
3z2-r22.227
x2-y212.088
xy-1.056
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.981 0.482 0.000
y 0.482 7.717 0.000
z 0.000 0.000 5.994


<r2> (average value of r2) Å2
<r2> 199.811
(<r2>)1/2 14.135