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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-307.341925
Energy at 298.15K 
HF Energy-307.341925
Nuclear repulsion energy241.836945
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 PBEPBE/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' 3127 3084 5.51 67.01 0.68 0.81
2 A' 3079 3037 18.71 80.01 0.71 0.83
3 A' 3006 2964 2.63 117.01 0.01 0.01
4 A' 2996 2955 16.14 97.69 0.01 0.02
5 A' 2992 2951 16.45 119.73 0.05 0.09
6 A' 1777 1752 200.02 3.25 0.26 0.41
7 A' 1480 1460 5.50 1.47 0.67 0.81
8 A' 1462 1441 2.32 23.76 0.75 0.86
9 A' 1435 1415 12.20 15.57 0.71 0.83
10 A' 1385 1366 5.54 8.99 0.65 0.79
11 A' 1357 1338 47.94 3.02 0.68 0.81
12 A' 1338 1320 15.23 5.37 0.64 0.78
13 A' 1231 1214 361.02 0.48 0.03 0.05
14 A' 1108 1093 11.36 5.65 0.17 0.30
15 A' 1047 1032 99.51 2.42 0.68 0.81
16 A' 978 965 10.46 0.98 0.19 0.31
17 A' 929 917 5.87 2.08 0.15 0.26
18 A' 836 825 6.22 9.24 0.34 0.51
19 A' 622 614 4.47 8.07 0.33 0.50
20 A' 415 409 0.75 0.45 0.65 0.79
21 A' 358 353 9.24 3.10 0.32 0.49
22 A' 188 185 4.78 0.33 0.65 0.79
23 A" 3083 3041 26.97 35.52 0.75 0.86
24 A" 3079 3036 4.19 59.66 0.75 0.86
25 A" 3034 2992 13.39 73.69 0.75 0.86
26 A" 1451 1432 5.79 20.16 0.75 0.86
27 A" 1440 1420 8.61 16.77 0.75 0.86
28 A" 1250 1233 0.38 11.42 0.75 0.86
29 A" 1143 1127 4.06 1.85 0.75 0.86
30 A" 1022 1008 6.74 0.54 0.75 0.86
31 A" 784 774 1.49 0.20 0.75 0.86
32 A" 580 572 2.99 1.34 0.75 0.86
33 A" 262 258 0.94 0.01 0.75 0.86
34 A" 154 152 3.78 0.02 0.75 0.86
35 A" 49 48 0.19 0.34 0.75 0.86
36 A" 15 14 0.84 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25244.7 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 24898.8 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 PBEPBE/6-31G**
ABC
0.27634 0.06904 0.05702

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.323 0.046 0.000
C2 -0.917 -0.515 0.000
O3 0.000 0.495 0.000
O4 -0.621 -1.700 0.000
C5 1.386 0.058 0.000
C6 2.255 1.303 0.000
H7 -3.044 -0.780 0.000
H8 -2.480 0.681 0.886
H9 -2.480 0.681 -0.886
H10 1.561 -0.573 0.888
H11 1.561 -0.573 -0.888
H12 3.319 1.016 0.000
H13 2.064 1.919 -0.893
H14 2.064 1.919 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51392.36602.43893.70894.74761.09681.10141.10144.03194.03195.72474.85294.8529
C21.51391.36451.22162.37343.65662.14342.15872.15872.63282.63284.50453.95113.9511
O32.36601.36452.28151.45292.39563.30042.64042.64042.08932.08933.35962.66182.6618
O42.43891.22162.28152.66864.15852.59223.14873.14872.61122.61124.78574.59424.5942
C53.70892.37341.45292.66861.51804.50874.01494.01491.10351.10352.15732.17212.1721
C64.74763.65662.39564.15851.51805.69414.85774.85772.18872.18871.10171.10121.1012
H71.09682.14343.30042.59224.50875.69411.79951.79954.69444.69446.61195.84615.8461
H81.10142.15872.64043.14874.01494.85771.79951.77264.23134.58815.87615.03474.7099
H91.10142.15872.64043.14874.01494.85771.79951.77264.58814.23135.87614.70995.0347
H104.03192.63282.08932.61121.10352.18874.69444.23134.58811.77512.53093.10392.5427
H114.03192.63282.08932.61121.10352.18874.69444.58814.23131.77512.53092.54273.1039
H125.72474.50453.35964.78572.15731.10176.61195.87615.87612.53092.53091.78501.7850
H134.85293.95112.66184.59422.17211.10125.84615.03474.70993.10392.54271.78501.7851
H144.85293.95112.66184.59422.17211.10125.84614.70995.03472.54273.10391.78501.7851

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 110.460 C1 C2 O4 125.812
C2 C1 H7 109.338 C2 C1 H8 110.263
C2 C1 H9 110.263 C2 O3 C5 114.760
O3 C2 O4 123.728 O3 C5 C6 107.466
O3 C5 H10 108.862 O3 C5 H11 108.862
C5 C6 H12 109.853 C5 C6 H13 111.048
C5 C6 H14 111.048 C6 C5 H10 112.245
C6 C5 H11 112.245 H7 C1 H8 109.897
H7 C1 H9 109.897 H8 C1 H9 107.159
H10 C5 H11 107.086 H12 C6 H13 108.252
H12 C6 H14 108.252 H13 C6 H14 108.293
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.437      
2 C 0.536      
3 O -0.412      
4 O -0.437      
5 C -0.001      
6 C -0.391      
7 H 0.155      
8 H 0.156      
9 H 0.156      
10 H 0.135      
11 H 0.135      
12 H 0.129      
13 H 0.138      
14 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.312 1.881 0.000 1.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.253 -0.988 0.000
y -0.988 -41.639 0.000
z 0.000 0.000 -35.242
Traceless
 xyz
x 8.188 -0.988 0.000
y -0.988 -8.892 0.000
z 0.000 0.000 0.704
Polar
3z2-r21.409
x2-y211.387
xy-0.988
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.174 0.557 0.000
y 0.557 7.613 0.000
z 0.000 0.000 5.806


<r2> (average value of r2) Å2
<r2> 203.070
(<r2>)1/2 14.250