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

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-305.956993
Energy at 298.15K 
HF Energy-305.956993
Nuclear repulsion energy245.875949
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 HF/6-311G**
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' 3298 2996 15.02 65.95 0.67 0.80
2 A' 3240 2943 53.89 64.76 0.62 0.77
3 A' 3214 2920 11.92 111.84 0.16 0.27
4 A' 3192 2900 4.65 126.79 0.01 0.02
5 A' 3172 2882 23.80 117.17 0.01 0.03
6 A' 1995 1812 365.59 3.71 0.69 0.82
7 A' 1652 1500 4.23 3.06 0.72 0.84
8 A' 1617 1469 3.22 13.14 0.73 0.84
9 A' 1587 1442 14.73 8.87 0.74 0.85
10 A' 1569 1426 4.50 3.36 0.26 0.41
11 A' 1536 1396 119.11 1.53 0.72 0.84
12 A' 1515 1376 10.79 0.54 0.74 0.85
13 A' 1409 1280 523.24 0.75 0.75 0.86
14 A' 1239 1126 40.35 7.41 0.17 0.29
15 A' 1182 1074 89.97 3.10 0.57 0.72
16 A' 1096 996 3.99 3.15 0.27 0.42
17 A' 1023 930 4.42 2.12 0.40 0.57
18 A' 948 861 13.05 7.59 0.34 0.50
19 A' 691 628 12.79 7.63 0.31 0.48
20 A' 460 418 1.19 0.24 0.66 0.79
21 A' 397 361 11.30 2.30 0.29 0.45
22 A' 206 187 5.97 0.29 0.68 0.81
23 A" 3267 2968 68.56 5.96 0.75 0.86
24 A" 3255 2957 12.51 59.04 0.75 0.86
25 A" 3236 2940 4.92 106.02 0.75 0.86
26 A" 1601 1454 6.01 10.32 0.75 0.86
27 A" 1595 1449 7.44 10.18 0.75 0.86
28 A" 1416 1286 2.23 7.86 0.75 0.86
29 A" 1287 1169 5.64 0.35 0.75 0.86
30 A" 1170 1063 9.25 0.45 0.75 0.86
31 A" 874 794 0.02 0.18 0.75 0.86
32 A" 666 605 12.56 1.21 0.75 0.86
33 A" 285 259 1.15 0.02 0.75 0.86
34 A" 156 142 5.56 0.01 0.75 0.86
35 A" 90 82 0.02 0.11 0.75 0.86
36 A" 73 67 0.98 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27603.3 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 25077.6 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 HF/6-311G**
ABC
0.28766 0.07059 0.05851

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.293 -0.014 0.000
C2 -0.885 -0.541 0.000
O3 0.000 0.444 0.000
O4 -0.589 -1.686 0.000
C5 1.380 0.093 0.000
C6 2.178 1.377 0.000
H7 -2.989 -0.839 0.000
H8 -2.447 0.607 0.876
H9 -2.447 0.607 -0.876
H10 1.591 -0.509 0.875
H11 1.591 -0.509 -0.875
H12 3.240 1.151 0.000
H13 1.952 1.970 -0.880
H14 1.952 1.970 0.880

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50322.33832.38763.67434.68231.08001.08421.08424.01184.01185.65414.76774.7677
C21.50321.32421.18292.35203.61442.12482.12682.12682.62642.62644.45873.88993.8899
O32.33831.32422.20981.42352.36953.25302.60432.60432.05012.05013.31602.62962.6296
O42.38761.18292.20982.65344.12812.54503.07843.07842.62752.62754.76554.53884.5388
C53.67432.35201.42352.65341.51244.46713.95923.95921.08271.08272.14012.15092.1509
C64.68233.61442.36954.12811.51245.62254.76984.76982.16062.16061.08571.08471.0847
H71.08002.12483.25302.54504.46715.62251.77551.77554.67444.67446.53925.75195.7519
H81.08422.12682.60433.07843.95924.76981.77551.75134.18914.54025.77964.92894.6057
H91.08422.12682.60433.07843.95924.76981.77551.75134.54024.18915.77964.60574.9289
H104.01182.62642.05012.62751.08272.16064.67444.18914.54021.75032.49813.05872.5051
H114.01182.62642.05012.62751.08272.16064.67444.54024.18911.75032.49812.50513.0587
H125.65414.45873.31604.76552.14011.08576.53925.77965.77962.49812.49811.76151.7615
H134.76773.88992.62964.53882.15091.08475.75194.92894.60573.05872.50511.76151.7599
H144.76773.88992.62964.53882.15091.08475.75194.60574.92892.50513.05871.76151.7599

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 111.429 C1 C2 O4 125.040
C2 C1 H7 109.591 C2 C1 H8 109.499
C2 C1 H9 109.499 C2 O3 C5 117.691
O3 C2 O4 123.531 O3 C5 C6 107.581
O3 C5 H10 109.017 O3 C5 H11 109.017
C5 C6 H12 109.822 C5 C6 H13 110.751
C5 C6 H14 110.751 C6 C5 H10 111.657
C6 C5 H11 111.657 H7 C1 H8 110.243
H7 C1 H9 110.243 H8 C1 H9 107.736
H10 C5 H11 107.861 H12 C6 H13 108.508
H12 C6 H14 108.508 H13 C6 H14 108.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.237      
2 C 0.471      
3 O -0.449      
4 O -0.462      
5 C 0.075      
6 C -0.250      
7 H 0.127      
8 H 0.119      
9 H 0.119      
10 H 0.100      
11 H 0.100      
12 H 0.092      
13 H 0.098      
14 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.217 2.099 0.000 2.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.447 -1.024 0.000
y -1.024 -43.603 0.000
z 0.000 0.000 -35.424
Traceless
 xyz
x 9.067 -1.024 0.000
y -1.024 -10.667 0.000
z 0.000 0.000 1.601
Polar
3z2-r23.202
x2-y213.156
xy-1.024
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.960 0.358 0.000
y 0.358 7.242 0.000
z 0.000 0.000 5.736


<r2> (average value of r2) Å2
<r2> 198.962
(<r2>)1/2 14.105