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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311G**
 hartrees
Energy at 0K-307.462617
Energy at 298.15K 
HF Energy-307.462617
Nuclear repulsion energy244.479577
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 HSEh1PBE/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' 3190 3063 6.26 64.76 0.69 0.82
2 A' 3139 3015 22.97 77.38 0.70 0.82
3 A' 3072 2951 3.31 107.81 0.00 0.00
4 A' 3068 2947 15.54 123.09 0.07 0.12
5 A' 3059 2938 16.00 135.91 0.00 0.01
6 A' 1848 1775 262.79 3.20 0.37 0.54
7 A' 1520 1460 6.88 1.90 0.75 0.86
8 A' 1496 1437 3.21 15.24 0.75 0.86
9 A' 1466 1408 14.66 9.87 0.69 0.81
10 A' 1432 1376 8.38 2.91 0.70 0.83
11 A' 1401 1345 87.41 1.47 0.75 0.86
12 A' 1382 1328 28.98 1.97 0.74 0.85
13 A' 1288 1237 400.22 0.47 0.34 0.51
14 A' 1147 1101 15.29 6.29 0.15 0.26
15 A' 1096 1053 96.63 2.53 0.75 0.86
16 A' 1013 973 8.74 1.21 0.23 0.38
17 A' 969 930 5.30 2.11 0.14 0.25
18 A' 875 841 7.92 6.65 0.34 0.50
19 A' 650 624 6.83 7.52 0.33 0.50
20 A' 431 414 0.82 0.29 0.63 0.78
21 A' 373 359 10.17 2.80 0.31 0.48
22 A' 196 188 4.99 0.36 0.67 0.80
23 A" 3144 3020 39.83 38.44 0.75 0.86
24 A" 3144 3020 0.56 42.99 0.75 0.86
25 A" 3108 2985 8.10 89.54 0.75 0.86
26 A" 1481 1422 8.30 11.09 0.75 0.86
27 A" 1471 1413 10.56 9.83 0.75 0.86
28 A" 1300 1249 1.24 7.79 0.75 0.86
29 A" 1180 1134 4.49 0.60 0.75 0.86
30 A" 1063 1021 7.24 0.12 0.75 0.86
31 A" 809 777 1.05 0.18 0.75 0.86
32 A" 610 586 4.65 0.99 0.75 0.86
33 A" 267 257 1.09 0.03 0.75 0.86
34 A" 156 150 4.45 0.03 0.75 0.86
35 A" 60 58 0.23 0.24 0.75 0.86
36 A" 37 36 0.83 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25971.0 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 24942.5 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 HSEh1PBE/6-311G**
ABC
0.28343 0.07033 0.05818

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.302 0.032 0.000
C2 -0.905 -0.517 0.000
O3 0.000 0.477 0.000
O4 -0.609 -1.682 0.000
C5 1.376 0.064 0.000
C6 2.223 1.311 0.000
H7 -3.014 -0.791 0.000
H8 -2.454 0.661 0.880
H9 -2.454 0.661 -0.880
H10 1.558 -0.557 0.881
H11 1.558 -0.557 -0.881
H12 3.282 1.044 0.000
H13 2.021 1.918 -0.886
H14 2.021 1.918 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50072.34422.40813.67774.70181.08791.09231.09234.00284.00285.67494.79934.7993
C21.50071.34361.20182.35353.62252.12692.13542.13542.61622.61624.46833.90853.9085
O32.34421.34362.24261.43632.37433.26952.61322.61322.06722.06723.33092.63622.6362
O42.40811.20182.24262.64384.12052.56423.10843.10842.59612.59614.75094.54604.5460
C53.67772.35351.43632.64381.50734.47233.97443.97441.09351.09352.14312.15372.1537
C64.70183.62252.37434.12051.50735.64274.80284.80282.17002.17001.09301.09241.0924
H71.08792.12693.26952.56424.47235.64271.78731.78734.66224.66226.55795.78605.7860
H81.09232.13542.61323.10843.97444.80281.78731.75994.19284.54765.81584.97264.6486
H91.09232.13542.61323.10843.97444.80281.78731.75994.54764.19285.81584.64864.9726
H104.00282.61622.06722.59611.09352.17004.66224.19284.54761.76212.51203.07632.5184
H114.00282.61622.06722.59611.09352.17004.66224.54764.19281.76212.51202.51843.0763
H125.67494.46833.33094.75092.14311.09306.55795.81585.81582.51202.51201.77191.7719
H134.79933.90852.63624.54602.15371.09245.78604.97264.64863.07632.51841.77191.7713
H144.79933.90852.63624.54602.15371.09245.78604.64864.97262.51843.07631.77191.7713

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 110.898 C1 C2 O4 125.655
C2 C1 H7 109.469 C2 C1 H8 109.880
C2 C1 H9 109.880 C2 O3 C5 115.649
O3 C2 O4 123.447 O3 C5 C6 107.500
O3 C5 H10 108.841 O3 C5 H11 108.841
C5 C6 H12 109.990 C5 C6 H13 110.869
C5 C6 H14 110.869 C6 C5 H10 112.117
C6 C5 H11 112.117 H7 C1 H8 110.127
H7 C1 H9 110.127 H8 C1 H9 107.334
H10 C5 H11 107.352 H12 C6 H13 108.345
H12 C6 H14 108.345 H13 C6 H14 108.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.339      
2 C 0.320      
3 O -0.324      
4 O -0.354      
5 C -0.067      
6 C -0.353      
7 H 0.152      
8 H 0.150      
9 H 0.150      
10 H 0.138      
11 H 0.138      
12 H 0.126      
13 H 0.132      
14 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.268 1.913 0.000 1.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.542 -1.060 0.000
y -1.060 -42.562 0.000
z 0.000 0.000 -35.445
Traceless
 xyz
x 8.462 -1.060 0.000
y -1.060 -9.568 0.000
z 0.000 0.000 1.107
Polar
3z2-r22.214
x2-y212.020
xy-1.060
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.040 0.483 0.000
y 0.483 7.750 0.000
z 0.000 0.000 6.028


<r2> (average value of r2) Å2
<r2> 199.823
(<r2>)1/2 14.136