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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-307.504035
Energy at 298.15K 
HF Energy-307.504035
Nuclear repulsion energy237.698861
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 BLYP/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' 3106 3083 10.59 71.79 0.67 0.80
2 A' 3052 3029 30.24 78.12 0.73 0.84
3 A' 2996 2973 15.00 90.80 0.09 0.16
4 A' 2992 2970 2.63 145.70 0.01 0.02
5 A' 2981 2958 20.55 114.12 0.03 0.05
6 A' 1654 1641 156.77 1.83 0.31 0.48
7 A' 1517 1505 6.14 2.41 0.69 0.81
8 A' 1504 1492 3.94 28.32 0.75 0.86
9 A' 1478 1467 20.83 18.73 0.73 0.84
10 A' 1424 1413 5.82 8.32 0.62 0.76
11 A' 1401 1391 22.62 7.82 0.63 0.77
12 A' 1370 1359 4.02 5.56 0.75 0.86
13 A' 1199 1190 311.26 0.97 0.35 0.52
14 A' 1114 1106 4.95 6.22 0.23 0.38
15 A' 1005 997 151.72 3.05 0.40 0.57
16 A' 998 990 2.90 1.75 0.59 0.74
17 A' 889 882 45.68 1.29 0.23 0.38
18 A' 782 776 7.77 14.89 0.29 0.44
19 A' 604 600 3.89 11.00 0.35 0.51
20 A' 409 406 0.70 0.96 0.58 0.73
21 A' 346 343 8.79 4.71 0.36 0.53
22 A' 179 177 5.47 0.38 0.65 0.79
23 A" 3071 3048 48.35 16.13 0.75 0.86
24 A" 3055 3032 8.47 63.49 0.75 0.86
25 A" 3039 3015 5.54 94.25 0.75 0.86
26 A" 1494 1483 6.44 24.60 0.75 0.86
27 A" 1483 1472 10.32 21.02 0.75 0.86
28 A" 1262 1252 0.00 13.33 0.75 0.86
29 A" 1148 1139 4.53 5.25 0.75 0.86
30 A" 1058 1050 7.29 0.83 0.75 0.86
31 A" 815 808 1.51 0.08 0.75 0.86
32 A" 565 561 4.06 1.57 0.75 0.86
33 A" 250 248 1.62 0.01 0.75 0.86
34 A" 148 147 6.10 0.01 0.75 0.86
35 A" 40 39 0.01 0.54 0.75 0.86
36 A" 26 25 1.32 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25225.3 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 25033.6 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 BLYP/6-31G
ABC
0.26748 0.06638 0.05484

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.355 0.032 0.000
C2 -0.948 -0.536 0.000
O3 0.000 0.496 0.000
O4 -0.639 -1.745 0.000
C5 1.445 0.071 0.000
C6 2.275 1.354 0.000
H7 -3.080 -0.792 0.000
H8 -2.512 0.667 0.888
H9 -2.512 0.667 -0.888
H10 1.620 -0.551 0.892
H11 1.620 -0.551 -0.892
H12 3.350 1.103 0.000
H13 2.060 1.962 -0.893
H14 2.060 1.962 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51732.40002.47013.79984.81491.09761.10251.10254.11524.11525.80464.90064.9006
C21.51731.40061.24792.46833.73582.14782.16322.16322.71832.71834.59974.01054.0105
O32.40001.40062.32961.50582.43163.33842.66952.66952.12512.12513.40482.68202.6820
O42.47011.24792.32962.76394.25332.62083.17963.17962.70602.70604.90134.67144.6714
C53.79982.46831.50582.76391.52784.60664.09834.09831.10191.10192.16692.17972.1797
C64.81493.73582.43164.25331.52785.76914.91674.91672.20322.20321.10371.10181.1018
H71.09762.14783.33842.62084.60665.76911.79941.79944.79024.79026.70375.89965.8996
H81.10252.16322.66953.17964.09834.91671.79941.77584.30744.66075.94475.07484.7520
H91.10252.16322.66953.17964.09834.91671.79941.77584.66074.30745.94474.75205.0748
H104.11522.71832.12512.70601.10192.20324.79024.30744.66071.78432.55483.11412.5514
H114.11522.71832.12512.70601.10192.20324.79024.66074.30741.78432.55482.55143.1141
H125.80464.59973.40484.90132.16691.10376.70375.94475.94472.55482.55481.78841.7884
H134.90064.01052.68204.67142.17971.10185.89965.07484.75203.11412.55141.78841.7866
H144.90064.01052.68204.67142.17971.10185.89964.75205.07482.55143.11411.78841.7866

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 110.613 C1 C2 O4 126.304
C2 C1 H7 109.400 C2 C1 H8 110.318
C2 C1 H9 110.318 C2 O3 C5 116.215
O3 C2 O4 123.083 O3 C5 C6 106.553
O3 C5 H10 108.164 O3 C5 H11 108.164
C5 C6 H12 109.811 C5 C6 H13 110.939
C5 C6 H14 110.939 C6 C5 H10 112.819
C6 C5 H11 112.819 H7 C1 H8 109.747
H7 C1 H9 109.747 H8 C1 H9 107.285
H10 C5 H11 108.128 H12 C6 H13 108.365
H12 C6 H14 108.365 H13 C6 H14 108.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.409      
2 C 0.454      
3 O -0.449      
4 O -0.394      
5 C -0.011      
6 C -0.374      
7 H 0.157      
8 H 0.161      
9 H 0.161      
10 H 0.147      
11 H 0.147      
12 H 0.128      
13 H 0.141      
14 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.441 1.914 0.000 1.964
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.643 -0.999 0.000
y -0.999 -43.104 0.000
z 0.000 0.000 -35.617
Traceless
 xyz
x 9.717 -0.999 0.000
y -0.999 -10.474 0.000
z 0.000 0.000 0.757
Polar
3z2-r21.514
x2-y213.461
xy-0.999
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.149 0.618 0.000
y 0.618 7.610 0.000
z 0.000 0.000 5.524


<r2> (average value of r2) Å2
<r2> 210.006
(<r2>)1/2 14.492