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

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-307.639336
Energy at 298.15K 
HF Energy-307.639336
Nuclear repulsion energy244.170917
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 mPW1PW91/6-31G**
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' 3218 3062 5.26 64.16 0.69 0.82
2 A' 3169 3015 19.83 73.71 0.71 0.83
3 A' 3094 2944 3.08 94.94 0.00 0.01
4 A' 3091 2941 15.47 104.81 0.07 0.14
5 A' 3083 2933 14.84 116.37 0.01 0.01
6 A' 1867 1776 240.07 3.20 0.35 0.52
7 A' 1535 1461 6.08 1.15 0.71 0.83
8 A' 1514 1441 2.09 22.30 0.75 0.86
9 A' 1485 1413 13.12 14.31 0.73 0.84
10 A' 1447 1377 8.67 4.92 0.73 0.85
11 A' 1419 1350 94.42 3.30 0.74 0.85
12 A' 1396 1328 15.43 3.08 0.61 0.76
13 A' 1309 1245 394.82 0.38 0.26 0.41
14 A' 1154 1098 21.29 6.36 0.16 0.27
15 A' 1107 1053 77.73 2.74 0.75 0.86
16 A' 1021 971 5.40 1.13 0.21 0.35
17 A' 971 924 3.80 2.10 0.19 0.32
18 A' 880 837 6.76 8.41 0.34 0.51
19 A' 649 618 7.07 7.42 0.33 0.49
20 A' 430 409 0.91 0.34 0.69 0.82
21 A' 372 354 10.31 2.51 0.32 0.48
22 A' 194 185 5.35 0.29 0.66 0.80
23 A" 3175 3021 30.40 29.39 0.75 0.86
24 A" 3172 3018 3.42 55.86 0.75 0.86
25 A" 3136 2984 10.28 78.71 0.75 0.86
26 A" 1502 1429 6.24 18.75 0.75 0.86
27 A" 1491 1419 9.01 15.67 0.75 0.86
28 A" 1305 1242 0.68 10.88 0.75 0.86
29 A" 1190 1132 4.81 1.27 0.75 0.86
30 A" 1069 1017 8.50 0.58 0.75 0.86
31 A" 813 774 1.09 0.19 0.75 0.86
32 A" 609 579 5.07 1.32 0.75 0.86
33 A" 269 256 1.04 0.01 0.75 0.86
34 A" 157 149 4.33 0.01 0.75 0.86
35 A" 61 58 0.01 0.33 0.75 0.86
36 A" 48 46 0.96 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26199.6 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 24928.9 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 mPW1PW91/6-31G**
ABC
0.28229 0.07021 0.05805

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.305 0.033 0.000
C2 -0.905 -0.515 0.000
O3 0.000 0.480 0.000
O4 -0.608 -1.686 0.000
C5 1.374 0.064 0.000
C6 2.227 1.310 0.000
H7 -3.016 -0.791 0.000
H8 -2.461 0.661 0.880
H9 -2.461 0.661 -0.880
H10 1.556 -0.558 0.880
H11 1.556 -0.558 -0.880
H12 3.285 1.037 0.000
H13 2.029 1.918 -0.885
H14 2.029 1.918 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50342.34782.41463.67914.70821.08771.09211.09214.00424.00425.67904.80864.8086
C21.50341.34471.20762.35133.62462.12882.13942.13942.61432.61434.46773.91313.9131
O32.34781.34472.24931.43572.37653.27232.61942.61942.06772.06773.33162.64022.6402
O42.41461.20762.24932.64424.12472.56823.11613.11612.59472.59474.75084.55294.5529
C53.67912.35131.43572.64421.50994.47223.97943.97941.09341.09342.14412.15662.1566
C64.70823.62462.37654.12471.50995.64764.81324.81322.17152.17151.09251.09201.0920
H71.08772.12883.27232.56824.47225.64761.78561.78564.66184.66186.56005.79425.7942
H81.09212.13942.61943.11613.97944.81321.78561.75934.19804.55205.82444.98554.6626
H91.09212.13942.61943.11613.97944.81321.78561.75934.55204.19805.82444.66264.9855
H104.00422.61432.06772.59471.09342.17154.66184.19804.55201.76072.51153.07812.5213
H114.00422.61432.06772.59471.09342.17154.66184.55204.19801.76072.51152.52133.0781
H125.67904.46773.33164.75082.14411.09256.56005.82445.82442.51152.51151.77091.7709
H134.80863.91312.64024.55292.15661.09205.79424.98554.66263.07812.52131.77091.7706
H144.80863.91312.64024.55292.15661.09205.79424.66264.98552.52133.07811.77091.7706

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 110.922 C1 C2 O4 125.569
C2 C1 H7 109.441 C2 C1 H8 110.023
C2 C1 H9 110.023 C2 O3 C5 115.452
O3 C2 O4 123.509 O3 C5 C6 107.544
O3 C5 H10 108.930 O3 C5 H11 108.930
C5 C6 H12 109.911 C5 C6 H13 110.943
C5 C6 H14 110.943 C6 C5 H10 112.063
C6 C5 H11 112.063 H7 C1 H8 110.006
H7 C1 H9 110.006 H8 C1 H9 107.318
H10 C5 H11 107.246 H12 C6 H13 108.315
H12 C6 H14 108.315 H13 C6 H14 108.328
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.469      
2 C 0.602      
3 O -0.470      
4 O -0.479      
5 C -0.004      
6 C -0.421      
7 H 0.170      
8 H 0.169      
9 H 0.169      
10 H 0.148      
11 H 0.148      
12 H 0.140      
13 H 0.149      
14 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.278 1.957 0.000 1.976
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.885 -1.021 0.000
y -1.021 -41.833 0.000
z 0.000 0.000 -34.984
Traceless
 xyz
x 8.523 -1.021 0.000
y -1.021 -9.398 0.000
z 0.000 0.000 0.875
Polar
3z2-r21.751
x2-y211.948
xy-1.021
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.499 0.466 0.000
y 0.466 7.324 0.000
z 0.000 0.000 5.660


<r2> (average value of r2) Å2
<r2> 199.830
(<r2>)1/2 14.136