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

using model chemistry: HSEh1PBE/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 HSEh1PBE/TZVP
 hartrees
Energy at 0K-307.489250
Energy at 298.15K 
HF Energy-307.489250
Nuclear repulsion energy244.414892
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/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' 3191 3064 4.86 60.11 0.68 0.81
2 A' 3140 3015 20.09 71.42 0.70 0.82
3 A' 3075 2952 2.41 128.56 0.00 0.01
4 A' 3070 2947 14.88 113.96 0.06 0.12
5 A' 3061 2939 14.57 160.43 0.00 0.01
6 A' 1832 1759 281.30 4.45 0.27 0.43
7 A' 1519 1459 7.60 1.69 0.75 0.86
8 A' 1496 1437 3.38 13.30 0.75 0.85
9 A' 1469 1410 14.46 8.31 0.67 0.80
10 A' 1435 1377 6.17 2.94 0.75 0.86
11 A' 1406 1350 75.56 0.79 0.73 0.85
12 A' 1389 1334 21.58 2.32 0.71 0.83
13 A' 1288 1237 414.02 0.31 0.25 0.40
14 A' 1148 1102 12.08 7.41 0.13 0.22
15 A' 1093 1050 101.67 2.57 0.75 0.86
16 A' 1018 977 7.60 1.21 0.20 0.34
17 A' 966 928 6.36 2.36 0.14 0.25
18 A' 874 839 8.68 6.76 0.32 0.48
19 A' 650 624 5.56 7.70 0.31 0.48
20 A' 435 418 0.89 0.34 0.66 0.80
21 A' 374 359 9.29 2.91 0.29 0.45
22 A' 195 187 5.58 0.32 0.63 0.77
23 A" 3147 3022 31.87 25.59 0.75 0.86
24 A" 3146 3020 2.42 50.14 0.75 0.86
25 A" 3111 2987 6.84 81.08 0.75 0.86
26 A" 1484 1424 8.09 10.33 0.75 0.86
27 A" 1474 1415 10.76 8.38 0.75 0.86
28 A" 1303 1251 0.98 9.24 0.75 0.86
29 A" 1182 1134 4.24 0.69 0.75 0.86
30 A" 1067 1024 6.87 0.20 0.75 0.86
31 A" 813 781 0.88 0.18 0.75 0.86
32 A" 611 587 5.09 1.42 0.75 0.86
33 A" 268 257 1.09 0.08 0.75 0.86
34 A" 156 150 5.00 0.02 0.75 0.86
35 A" 65 62 0.36 0.37 0.75 0.86
36 A" 30 29 0.53 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25989.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 24952.2 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/TZVP
ABC
0.28390 0.07016 0.05808

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.302 0.028 0.000
C2 -0.906 -0.517 0.000
O3 0.000 0.474 0.000
O4 -0.611 -1.684 0.000
C5 1.378 0.069 0.000
C6 2.223 1.316 0.000
H7 -3.013 -0.795 0.000
H8 -2.458 0.656 0.879
H9 -2.458 0.656 -0.879
H10 1.564 -0.550 0.881
H11 1.564 -0.550 -0.881
H12 3.281 1.044 0.000
H13 2.025 1.923 -0.885
H14 2.025 1.923 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.49932.34502.40613.68084.70451.08711.09151.09154.00774.00775.67464.80624.8062
C21.49931.34291.20282.35823.62592.12512.13492.13492.62282.62284.46823.91513.9151
O32.34501.34292.24261.43662.37663.26902.61662.61662.06702.06703.32982.64262.6426
O42.40611.20282.24262.65144.12632.56083.10723.10722.60652.60654.75274.55404.5540
C53.68082.35821.43662.65141.50574.47523.97903.97901.09271.09272.13782.15372.1537
C64.70453.62592.37664.12631.50575.64474.80784.80782.16582.16581.09211.09141.0914
H71.08712.12513.26902.56084.47525.64471.78461.78464.66764.66766.55655.79215.7921
H81.09152.13492.61663.10723.97904.80781.78461.75894.19914.55315.81834.98164.6585
H91.09152.13492.61663.10723.97904.80781.78461.75894.55314.19915.81834.65854.9816
H104.00772.62282.06702.60651.09272.16584.66764.19914.55311.76162.50283.07352.5155
H114.00772.62282.06702.60651.09272.16584.66764.55314.19911.76162.50282.51553.0735
H125.67464.46823.32984.75272.13781.09216.55655.81835.81832.50282.50281.76951.7695
H134.80623.91512.64264.55402.15371.09145.79214.98164.65853.07352.51551.76951.7706
H144.80623.91512.64264.55402.15371.09145.79214.65854.98162.51553.07351.76951.7706

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 111.073 C1 C2 O4 125.513
C2 C1 H7 109.474 C2 C1 H8 109.989
C2 C1 H9 109.989 C2 O3 C5 116.033
O3 C2 O4 123.414 O3 C5 C6 107.729
O3 C5 H10 108.860 O3 C5 H11 108.860
C5 C6 H12 109.730 C5 C6 H13 111.041
C5 C6 H14 111.041 C6 C5 H10 111.945
C6 C5 H11 111.945 H7 C1 H8 110.000
H7 C1 H9 110.000 H8 C1 H9 107.363
H10 C5 H11 107.432 H12 C6 H13 108.260
H12 C6 H14 108.260 H13 C6 H14 108.420
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.401      
2 C 0.257      
3 O -0.182      
4 O -0.321      
5 C -0.108      
6 C -0.333      
7 H 0.155      
8 H 0.145      
9 H 0.145      
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
  0.304 2.033 0.000 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.420 -1.067 0.000
y -1.067 -43.213 0.000
z 0.000 0.000 -35.619
Traceless
 xyz
x 8.996 -1.067 0.000
y -1.067 -10.193 0.000
z 0.000 0.000 1.197
Polar
3z2-r22.393
x2-y212.793
xy-1.067
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.318 0.484 0.000
y 0.484 8.259 0.000
z 0.000 0.000 6.456


<r2> (average value of r2) Å2
<r2> 200.261
(<r2>)1/2 14.151