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

using model chemistry: TPSSh/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 TPSSh/6-311G*
 hartrees
Energy at 0K-307.792072
Energy at 298.15K 
HF Energy-307.792072
Nuclear repulsion energy243.166172
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 TPSSh/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' 3164 3048 14.02 69.70 0.68 0.81
2 A' 3111 2997 38.05 79.72 0.70 0.82
3 A' 3061 2948 19.00 92.17 0.10 0.18
4 A' 3054 2942 4.27 143.12 0.01 0.02
5 A' 3042 2930 23.87 120.55 0.01 0.02
6 A' 1798 1732 243.02 3.04 0.36 0.53
7 A' 1544 1487 5.39 0.96 0.75 0.86
8 A' 1526 1469 2.71 18.01 0.75 0.86
9 A' 1501 1446 16.21 11.19 0.69 0.82
10 A' 1440 1387 6.46 3.79 0.73 0.85
11 A' 1416 1363 37.44 1.18 0.75 0.86
12 A' 1400 1348 11.88 2.88 0.74 0.85
13 A' 1260 1213 396.99 0.50 0.29 0.45
14 A' 1143 1101 13.56 6.30 0.16 0.27
15 A' 1065 1026 135.62 2.79 0.73 0.84
16 A' 1014 977 7.81 1.66 0.26 0.41
17 A' 943 909 9.96 1.81 0.17 0.29
18 A' 858 826 10.64 8.69 0.32 0.49
19 A' 633 609 5.67 8.56 0.34 0.50
20 A' 417 401 0.72 0.37 0.61 0.76
21 A' 361 348 9.62 3.15 0.31 0.48
22 A' 188 182 4.74 0.37 0.66 0.80
23 A" 3124 3009 61.18 10.75 0.75 0.86
24 A" 3116 3001 11.12 61.64 0.75 0.86
25 A" 3096 2982 2.64 105.85 0.75 0.86
26 A" 1516 1460 7.00 12.77 0.75 0.86
27 A" 1504 1449 9.13 11.39 0.75 0.86
28 A" 1306 1258 0.84 9.21 0.75 0.86
29 A" 1188 1144 3.87 1.12 0.75 0.86
30 A" 1070 1030 5.01 0.22 0.75 0.86
31 A" 807 777 0.51 0.18 0.75 0.86
32 A" 599 577 4.75 1.15 0.75 0.86
33 A" 265 255 1.10 0.03 0.75 0.86
34 A" 155 149 4.48 0.03 0.75 0.86
35 A" 61 59 0.29 0.26 0.75 0.86
36 A" 24 23 0.61 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25884.1 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 24931.6 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 TPSSh/6-311G*
ABC
0.28006 0.06960 0.05754

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.315 0.038 0.000
C2 -0.912 -0.517 0.000
O3 0.000 0.484 0.000
O4 -0.614 -1.689 0.000
C5 1.386 0.058 0.000
C6 2.239 1.310 0.000
H7 -3.030 -0.783 0.000
H8 -2.470 0.667 0.880
H9 -2.470 0.667 -0.880
H10 1.559 -0.562 0.883
H11 1.559 -0.562 -0.883
H12 3.298 1.039 0.000
H13 2.039 1.918 -0.886
H14 2.039 1.918 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50912.35782.42413.70164.72841.08821.09281.09284.01844.01845.70214.82484.8248
C21.50911.35481.20902.36943.64262.13442.14582.14582.62432.62434.48893.92743.9274
O32.35781.35482.25861.45052.38643.28412.62852.62852.07472.07473.34472.64532.6453
O42.42411.20902.25862.65634.13972.58023.12553.12552.60242.60244.77004.56454.5645
C53.70162.36941.45052.65631.51484.49564.00224.00221.09261.09262.14892.16072.1607
C64.72843.64262.38644.13971.51485.66924.83354.83352.17892.17891.09371.09261.0926
H71.08822.13443.28412.58024.49565.66921.78571.78574.67814.67816.58535.81135.8113
H81.09282.14582.62853.12554.00224.83351.78571.76064.21214.56635.84715.00184.6795
H91.09282.14582.62853.12554.00224.83351.78571.76064.56634.21215.84714.67955.0018
H104.01842.62432.07472.60241.09262.17894.67814.21214.56631.76572.52373.08362.5257
H114.01842.62432.07472.60241.09262.17894.67814.56634.21211.76572.52372.52573.0836
H125.70214.48893.34474.77002.14891.09376.58535.84715.84712.52372.52371.77271.7727
H134.82483.92742.64534.56452.16071.09265.81135.00184.67953.08362.52571.77271.7722
H144.82483.92742.64534.56452.16071.09265.81134.67955.00182.52573.08361.77271.7722

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 110.716 C1 C2 O4 125.856
C2 C1 H7 109.459 C2 C1 H8 110.092
C2 C1 H9 110.092 C2 O3 C5 115.227
O3 C2 O4 123.428 O3 C5 C6 107.157
O3 C5 H10 108.521 O3 C5 H11 108.521
C5 C6 H12 109.887 C5 C6 H13 110.892
C5 C6 H14 110.892 C6 C5 H10 112.359
C6 C5 H11 112.359 H7 C1 H8 109.922
H7 C1 H9 109.922 H8 C1 H9 107.330
H10 C5 H11 107.806 H12 C6 H13 108.350
H12 C6 H14 108.350 H13 C6 H14 108.389
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.674      
2 C 0.427      
3 O -0.323      
4 O -0.365      
5 C -0.216      
6 C -0.621      
7 H 0.237      
8 H 0.233      
9 H 0.233      
10 H 0.216      
11 H 0.216      
12 H 0.210      
13 H 0.214      
14 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.323 1.871 0.000 1.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.150 0.505 0.000
y 0.505 7.777 0.000
z 0.000 0.000 5.971


<r2> (average value of r2) Å2
<r2> 201.728
(<r2>)1/2 14.203