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

using model chemistry: B2PLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-307.181337
Energy at 298.15K 
HF Energy-306.970951
Nuclear repulsion energy239.784948
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 B2PLYP/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3205 3205 7.70 64.53 0.70 0.82
2 A' 3156 3156 25.40 68.94 0.74 0.85
3 A' 3099 3099 12.19 91.93 0.10 0.18
4 A' 3090 3090 2.33 120.23 0.01 0.01
5 A' 3077 3077 17.25 105.67 0.02 0.05
6 A' 1703 1703 157.84 2.36 0.44 0.61
7 A' 1576 1576 6.50 1.26 0.74 0.85
8 A' 1562 1562 4.67 27.90 0.75 0.86
9 A' 1535 1535 22.86 18.09 0.74 0.85
10 A' 1482 1482 7.98 5.79 0.69 0.82
11 A' 1466 1466 29.16 4.22 0.70 0.82
12 A' 1435 1435 1.68 4.33 0.71 0.83
13 A' 1278 1278 381.69 0.42 0.49 0.66
14 A' 1164 1164 4.92 7.57 0.21 0.34
15 A' 1073 1073 141.04 3.77 0.50 0.66
16 A' 1045 1045 2.80 2.49 0.46 0.63
17 A' 941 941 29.64 1.56 0.34 0.50
18 A' 826 826 10.58 15.83 0.27 0.42
19 A' 633 633 7.14 10.32 0.34 0.51
20 A' 424 424 0.72 0.76 0.64 0.78
21 A' 360 360 9.98 3.95 0.36 0.53
22 A' 185 185 6.08 0.37 0.67 0.80
23 A" 3175 3175 41.07 13.79 0.75 0.86
24 A" 3165 3165 5.58 58.13 0.75 0.86
25 A" 3147 3147 4.54 89.32 0.75 0.86
26 A" 1550 1550 6.92 23.04 0.75 0.86
27 A" 1539 1539 11.07 20.02 0.75 0.86
28 A" 1317 1317 0.01 13.23 0.75 0.86
29 A" 1205 1205 5.66 4.36 0.75 0.86
30 A" 1108 1108 7.88 1.03 0.75 0.86
31 A" 847 847 0.95 0.10 0.75 0.86
32 A" 588 588 6.86 1.69 0.75 0.86
33 A" 259 259 1.88 0.01 0.75 0.86
34 A" 152 152 7.22 0.00 0.75 0.86
35 A" 67 67 0.52 0.24 0.75 0.86
36 A" 46 46 0.63 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26240.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26240.1 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 B2PLYP/6-31G
ABC
0.27171 0.06760 0.05583

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.336 0.010 0.000
C2 -0.933 -0.537 0.000
O3 0.000 0.484 0.000
O4 -0.615 -1.738 0.000
C5 1.431 0.083 0.000
C6 2.237 1.370 0.000
H7 -3.045 -0.818 0.000
H8 -2.495 0.636 0.883
H9 -2.495 0.636 -0.883
H10 1.616 -0.531 0.885
H11 1.616 -0.531 -0.885
H12 3.308 1.140 0.000
H13 2.010 1.968 -0.887
H14 2.010 1.968 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50482.38332.45193.76764.77081.08981.09371.09374.08524.08525.75554.84854.8485
C21.50481.38351.24232.44473.69992.12972.14262.14262.69862.69864.56083.96563.9656
O32.38331.38352.30571.48662.40613.31142.65052.65052.10392.10393.37222.65122.6512
O42.45191.24232.30572.73944.21842.59743.15323.15322.68642.68644.86544.62734.6273
C53.76762.44471.48662.73941.51854.56574.06184.06181.09331.09332.15372.16212.1621
C64.77083.69992.40614.21841.51855.71694.86924.86922.18762.18761.09521.09331.0933
H71.08982.12973.31142.59744.56575.71691.78721.78724.75224.75226.64735.83945.8394
H81.09372.14262.65053.15324.06184.86921.78721.76544.27284.62425.89105.02014.6979
H91.09372.14262.65053.15324.06184.86921.78721.76544.62424.27285.89104.69795.0201
H104.08522.69862.10392.68641.09332.18764.75224.27284.62421.77072.53783.08912.5302
H114.08522.69862.10392.68641.09332.18764.75224.62424.27281.77072.53782.53023.0891
H125.75554.56083.37224.86542.15371.09526.64735.89105.89102.53782.53781.77651.7765
H134.84853.96562.65124.62732.16211.09335.83945.02014.69793.08912.53021.77651.7737
H144.84853.96562.65124.62732.16211.09335.83944.69795.02012.53023.08911.77651.7737

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 111.138 C1 C2 O4 126.128
C2 C1 H7 109.294 C2 C1 H8 110.084
C2 C1 H9 110.084 C2 O3 C5 116.766
O3 C2 O4 122.734 O3 C5 C6 106.384
O3 C5 H10 108.307 O3 C5 H11 108.307
C5 C6 H12 109.915 C5 C6 H13 110.695
C5 C6 H14 110.695 C6 C5 H10 112.756
C6 C5 H11 112.756 H7 C1 H8 109.871
H7 C1 H9 109.871 H8 C1 H9 107.620
H10 C5 H11 108.154 H12 C6 H13 108.527
H12 C6 H14 108.527 H13 C6 H14 108.417
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.460      
2 C 0.535      
3 O -0.532      
4 O -0.437      
5 C -0.015      
6 C -0.419      
7 H 0.177      
8 H 0.180      
9 H 0.180      
10 H 0.166      
11 H 0.166      
12 H 0.143      
13 H 0.158      
14 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.390 1.919 0.000 1.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.802 -0.954 -0.006
y -0.954 -43.809 -0.014
z -0.006 -0.014 -35.844
Traceless
 xyz
x 10.025 -0.954 -0.006
y -0.954 -10.986 -0.014
z -0.006 -0.014 0.961
Polar
3z2-r21.922
x2-y214.007
xy-0.954
xz-0.006
yz-0.014


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.403 0.533 0.000
y 0.533 7.383 0.002
z 0.000 0.002 5.385


<r2> (average value of r2) Å2
<r2> 206.910
(<r2>)1/2 14.384