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

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-307.610457
Energy at 298.15K 
HF Energy-307.610457
Nuclear repulsion energy240.232535
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 B3LYP/6-31G
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' 3188 3067 7.93 67.25 0.68 0.81
2 A' 3135 3016 26.84 72.77 0.73 0.84
3 A' 3077 2960 12.89 92.36 0.10 0.18
4 A' 3071 2954 1.80 129.53 0.01 0.01
5 A' 3058 2942 17.98 109.00 0.02 0.04
6 A' 1730 1665 186.27 2.30 0.41 0.59
7 A' 1558 1499 7.31 1.00 0.69 0.82
8 A' 1544 1485 4.29 28.52 0.75 0.86
9 A' 1514 1457 20.35 17.80 0.73 0.85
10 A' 1465 1409 7.85 6.40 0.67 0.80
11 A' 1447 1392 34.97 5.11 0.68 0.81
12 A' 1422 1368 0.68 4.70 0.72 0.84
13 A' 1272 1224 392.43 0.63 0.45 0.62
14 A' 1153 1110 6.23 6.86 0.21 0.34
15 A' 1065 1025 136.69 3.22 0.55 0.71
16 A' 1037 997 2.15 2.01 0.43 0.60
17 A' 943 907 23.20 1.50 0.28 0.44
18 A' 829 798 8.83 13.95 0.29 0.44
19 A' 633 609 6.60 9.73 0.35 0.52
20 A' 423 407 0.84 0.71 0.62 0.77
21 A' 360 346 10.23 3.80 0.36 0.53
22 A' 184 177 6.19 0.36 0.67 0.80
23 A" 3152 3032 42.96 14.17 0.75 0.86
24 A" 3139 3020 5.74 60.59 0.75 0.86
25 A" 3121 3002 4.50 93.54 0.75 0.86
26 A" 1531 1473 7.44 23.30 0.75 0.86
27 A" 1520 1462 11.66 19.94 0.75 0.86
28 A" 1304 1255 0.03 13.66 0.75 0.86
29 A" 1192 1147 5.83 3.73 0.75 0.86
30 A" 1096 1054 9.48 0.85 0.75 0.86
31 A" 838 806 1.36 0.10 0.75 0.86
32 A" 591 568 6.19 1.61 0.75 0.86
33 A" 255 245 1.84 0.01 0.75 0.86
34 A" 152 146 6.84 0.01 0.75 0.86
35 A" 60 57 0.43 0.29 0.75 0.86
36 A" 44 42 0.90 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26050.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 25060.6 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 B3LYP/6-31G
ABC
0.27330 0.06774 0.05599

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.331 0.009 0.000
C2 -0.931 -0.538 0.000
O3 0.000 0.478 0.000
O4 -0.617 -1.733 0.000
C5 1.428 0.085 0.000
C6 2.234 1.371 0.000
H7 -3.044 -0.816 0.000
H8 -2.491 0.637 0.882
H9 -2.491 0.637 -0.882
H10 1.617 -0.530 0.885
H11 1.617 -0.530 -0.885
H12 3.305 1.140 0.000
H13 2.010 1.971 -0.887
H14 2.010 1.971 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50332.37792.44393.76034.76431.09011.09481.09484.08144.08145.74914.84604.8460
C21.50331.37781.23552.44023.69632.13142.14322.14322.69682.69684.55673.96643.9664
O32.37791.37782.29521.48122.40623.30752.64722.64722.10042.10043.37132.65672.6567
O42.44391.23552.29522.73694.21492.59473.14793.14792.68692.68694.86234.62714.6271
C53.76032.44021.48122.73691.51734.56234.05494.05491.09431.09432.15322.16372.1637
C64.76433.69632.40624.21491.51735.71344.86234.86232.18602.18601.09581.09431.0943
H71.09012.13143.30752.59474.56235.71341.78781.78784.75254.75256.64415.83945.8394
H81.09482.14322.64723.14794.05494.86231.78781.76394.27004.62125.88465.01654.6942
H91.09482.14322.64723.14794.05494.86231.78781.76394.62124.27005.88464.69425.0165
H104.08142.69682.10042.68691.09432.18604.75254.27004.62121.77032.53493.09062.5320
H114.08142.69682.10042.68691.09432.18604.75254.62124.27001.77032.53492.53203.0906
H125.74914.55673.37134.86232.15321.09586.64415.88465.88462.53492.53491.77651.7765
H134.84603.96642.65674.62712.16371.09435.83945.01654.69423.09062.53201.77651.7740
H144.84603.96642.65674.62712.16371.09435.83944.69425.01652.53203.09061.77651.7740

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 111.172 C1 C2 O4 126.053
C2 C1 H7 109.509 C2 C1 H8 110.166
C2 C1 H9 110.166 C2 O3 C5 117.153
O3 C2 O4 122.775 O3 C5 C6 106.729
O3 C5 H10 108.342 O3 C5 H11 108.342
C5 C6 H12 109.923 C5 C6 H13 110.850
C5 C6 H14 110.850 C6 C5 H10 112.651
C6 C5 H11 112.651 H7 C1 H8 109.821
H7 C1 H9 109.821 H8 C1 H9 107.331
H10 C5 H11 107.967 H12 C6 H13 108.417
H12 C6 H14 108.417 H13 C6 H14 108.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.452      
2 C 0.512      
3 O -0.506      
4 O -0.429      
5 C -0.018      
6 C -0.414      
7 H 0.174      
8 H 0.178      
9 H 0.178      
10 H 0.163      
11 H 0.163      
12 H 0.141      
13 H 0.155      
14 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.385 1.996 0.000 2.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.404 -0.967 0.000
y -0.967 -43.414 0.000
z 0.000 0.000 -35.479
Traceless
 xyz
x 10.043 -0.967 0.000
y -0.967 -10.973 0.000
z 0.000 0.000 0.930
Polar
3z2-r21.859
x2-y214.010
xy-0.967
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.497 0.523 0.000
y 0.523 7.368 0.000
z 0.000 0.000 5.407


<r2> (average value of r2) Å2
<r2> 206.220
(<r2>)1/2 14.360