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

using model chemistry: B3LYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-307.825318
Energy at 298.15K 
HF Energy-307.825318
Nuclear repulsion energy243.536720
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/6-311+G(3df,2p)
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' 3152 3048 6.63 58.09 0.66 0.79
2 A' 3099 2997 23.55 68.92 0.68 0.81
3 A' 3047 2947 7.53 80.36 0.01 0.01
4 A' 3046 2945 9.65 185.70 0.03 0.06
5 A' 3034 2934 16.54 161.25 0.01 0.01
6 A' 1793 1734 280.14 7.87 0.26 0.41
7 A' 1522 1472 6.84 1.06 0.75 0.85
8 A' 1501 1451 3.06 7.04 0.75 0.86
9 A' 1474 1426 15.39 5.78 0.62 0.76
10 A' 1426 1379 4.81 1.01 0.74 0.85
11 A' 1407 1360 31.92 0.13 0.73 0.85
12 A' 1394 1348 15.86 1.12 0.47 0.64
13 A' 1262 1220 416.06 1.17 0.63 0.78
14 A' 1135 1098 11.35 7.26 0.11 0.20
15 A' 1066 1031 128.66 1.92 0.75 0.86
16 A' 1012 978 4.47 1.75 0.18 0.30
17 A' 946 914 7.45 1.92 0.16 0.28
18 A' 859 830 9.42 6.98 0.21 0.35
19 A' 638 617 5.11 8.00 0.21 0.35
20 A' 431 417 0.98 0.33 0.64 0.78
21 A' 368 356 8.50 3.47 0.22 0.36
22 A' 193 186 5.71 0.39 0.55 0.71
23 A" 3109 3006 37.36 13.67 0.75 0.86
24 A" 3105 3002 4.62 52.25 0.75 0.86
25 A" 3079 2977 2.75 84.55 0.75 0.86
26 A" 1489 1440 6.80 5.18 0.75 0.86
27 A" 1480 1431 8.13 4.24 0.75 0.86
28 A" 1297 1255 1.05 3.82 0.75 0.86
29 A" 1180 1141 3.50 0.42 0.75 0.86
30 A" 1067 1032 5.83 0.05 0.75 0.86
31 A" 813 786 0.68 0.21 0.75 0.86
32 A" 612 591 5.18 0.34 0.75 0.86
33 A" 261 253 0.97 0.01 0.75 0.86
34 A" 152 147 4.75 0.03 0.75 0.86
35 A" 66 64 0.35 0.22 0.75 0.86
36 A" 45 43 0.36 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25778.1 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 24927.4 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/6-311+G(3df,2p)
ABC
0.28243 0.06941 0.05750

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.312 0.021 0.000
C2 -0.909 -0.525 0.000
O3 0.000 0.470 0.000
O4 -0.615 -1.693 0.000
C5 1.390 0.075 0.000
C6 2.228 1.334 0.000
H7 -3.022 -0.800 0.000
H8 -2.469 0.648 0.878
H9 -2.469 0.648 -0.878
H10 1.577 -0.541 0.880
H11 1.577 -0.541 -0.880
H12 3.286 1.071 0.000
H13 2.027 1.939 -0.884
H14 2.027 1.939 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50592.35502.41223.70214.72591.08531.09001.09004.02664.02665.69574.82534.8253
C21.50591.34761.20432.37553.64632.13082.14022.14022.63672.63674.48823.93333.9333
O32.35501.34762.24901.44492.38973.27762.62612.62612.06952.06953.34082.65472.6547
O42.41221.20432.24902.67334.15312.56713.11253.11252.62812.62814.78124.57774.5777
C53.70212.37551.44492.67331.51264.49743.99833.99831.09021.09022.14192.15922.1592
C64.72593.64632.38974.15311.51265.66684.82704.82702.17112.17111.09061.08991.0899
H71.08532.13083.27762.56714.49745.66681.78121.78124.68924.68926.57945.81125.8112
H81.09002.14022.62613.11253.99834.82701.78121.75584.21664.56835.83684.99794.6771
H91.09002.14022.62613.11253.99834.82701.78121.75584.56834.21665.83684.67714.9979
H104.02662.63672.06952.62811.09022.17114.68924.21664.56831.75972.50873.07642.5205
H114.02662.63672.06952.62811.09022.17114.68924.56834.21661.75972.50872.52053.0764
H125.69574.48823.34084.78122.14191.09066.57945.83685.83682.50872.50871.76691.7669
H134.82533.93332.65474.57772.15921.08995.81124.99794.67713.07642.52051.76691.7677
H144.82533.93332.65474.57772.15921.08995.81124.67714.99792.52053.07641.76691.7677

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 111.117 C1 C2 O4 125.386
C2 C1 H7 109.562 C2 C1 H8 110.037
C2 C1 H9 110.037 C2 O3 C5 116.532
O3 C2 O4 123.497 O3 C5 C6 107.787
O3 C5 H10 108.633 O3 C5 H11 108.633
C5 C6 H12 109.671 C5 C6 H13 111.089
C5 C6 H14 111.089 C6 C5 H10 112.037
C6 C5 H11 112.037 H7 C1 H8 109.936
H7 C1 H9 109.936 H8 C1 H9 107.306
H10 C5 H11 107.621 H12 C6 H13 108.256
H12 C6 H14 108.256 H13 C6 H14 108.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.374      
2 C 0.707      
3 O -0.541      
4 O -0.704      
5 C 0.135      
6 C -0.462      
7 H 0.166      
8 H 0.161      
9 H 0.161      
10 H 0.155      
11 H 0.155      
12 H 0.147      
13 H 0.147      
14 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.332 2.079 0.000 2.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.802 -1.025 0.000
y -1.025 -43.529 0.000
z 0.000 0.000 -35.930
Traceless
 xyz
x 8.928 -1.025 0.000
y -1.025 -10.163 0.000
z 0.000 0.000 1.235
Polar
3z2-r22.470
x2-y212.727
xy-1.025
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.286 0.611 0.000
y 0.611 8.847 0.000
z 0.000 0.000 6.865


<r2> (average value of r2) Å2
<r2> 202.144
(<r2>)1/2 14.218