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

using model chemistry: B3LYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-307.854102
Energy at 298.15K 
HF Energy-307.854102
Nuclear repulsion energy243.592647
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/cc-pVQZ
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' 3154 3055 6.77 60.40 0.65 0.79
2 A' 3102 3005 23.97 71.23 0.68 0.81
3 A' 3050 2954 7.89 78.92 0.00 0.01
4 A' 3048 2953 10.18 183.26 0.03 0.07
5 A' 3036 2942 16.37 173.07 0.00 0.01
6 A' 1792 1736 265.25 4.92 0.31 0.47
7 A' 1522 1474 6.27 1.32 0.74 0.85
8 A' 1499 1453 2.94 8.90 0.75 0.86
9 A' 1473 1427 14.69 6.67 0.65 0.79
10 A' 1428 1383 5.24 1.20 0.75 0.86
11 A' 1408 1364 28.75 0.14 0.75 0.86
12 A' 1394 1351 21.16 1.35 0.54 0.70
13 A' 1262 1222 413.18 0.96 0.49 0.65
14 A' 1137 1102 11.30 6.81 0.11 0.20
15 A' 1066 1033 129.73 1.98 0.75 0.86
16 A' 1013 981 4.63 1.82 0.19 0.32
17 A' 946 916 7.71 1.87 0.14 0.24
18 A' 859 832 9.43 7.22 0.24 0.38
19 A' 638 619 5.24 7.87 0.24 0.39
20 A' 431 418 0.93 0.32 0.63 0.77
21 A' 368 357 8.54 3.29 0.25 0.40
22 A' 193 187 5.48 0.39 0.57 0.73
23 A" 3111 3014 38.23 14.64 0.75 0.86
24 A" 3107 3010 4.68 53.60 0.75 0.86
25 A" 3081 2985 3.22 88.33 0.75 0.86
26 A" 1488 1441 6.41 6.45 0.75 0.86
27 A" 1479 1433 7.72 5.49 0.75 0.86
28 A" 1299 1259 1.08 4.29 0.75 0.86
29 A" 1181 1144 3.60 0.47 0.75 0.86
30 A" 1069 1036 5.78 0.05 0.75 0.86
31 A" 814 789 0.68 0.15 0.75 0.86
32 A" 612 593 5.02 0.56 0.75 0.86
33 A" 261 253 0.98 0.02 0.75 0.86
34 A" 152 148 4.50 0.03 0.75 0.86
35 A" 65 63 0.31 0.20 0.75 0.86
36 A" 46 45 0.45 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25791.7 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 24987.0 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/cc-pVQZ
ABC
0.28255 0.06945 0.05753

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.311 0.021 0.000
C2 -0.908 -0.526 0.000
O3 0.000 0.470 0.000
O4 -0.615 -1.693 0.000
C5 1.390 0.075 0.000
C6 2.227 1.333 0.000
H7 -3.021 -0.800 0.000
H8 -2.467 0.647 0.878
H9 -2.467 0.647 -0.878
H10 1.578 -0.541 0.879
H11 1.578 -0.541 -0.879
H12 3.285 1.071 0.000
H13 2.026 1.938 -0.883
H14 2.026 1.938 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50572.35462.41163.70144.72461.08471.08931.08934.02644.02645.69404.82314.8231
C21.50571.34821.20372.37533.64552.12982.13922.13922.63702.63704.48713.93163.9316
O32.35461.34822.24941.44502.38873.27672.62462.62462.06982.06983.33962.65262.6526
O42.41161.20372.24942.67314.15222.56593.11103.11102.62872.62874.78034.57574.5757
C53.70142.37531.44502.67311.51184.49613.99673.99671.08951.08952.14112.15752.1575
C64.72463.64552.38874.15221.51185.66494.82504.82502.16952.16951.08991.08921.0892
H71.08472.12983.27672.56594.49615.66491.78051.78054.68864.68866.57725.80835.8083
H81.08932.13922.62463.11103.99674.82501.78051.75514.21574.56715.83434.99514.6744
H91.08932.13922.62463.11103.99674.82501.78051.75514.56714.21575.83434.67444.9951
H104.02642.63702.06982.62871.08952.16954.68864.21574.56711.75852.50693.07402.5184
H114.02642.63702.06982.62871.08952.16954.68864.56714.21571.75852.50692.51843.0740
H125.69404.48713.33964.78032.14111.08996.57725.83435.83432.50692.50691.76611.7661
H134.82313.93162.65264.57572.15751.08925.80834.99514.67443.07402.51841.76611.7668
H144.82313.93162.65264.57572.15751.08925.80834.67444.99512.51843.07401.76611.7668

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 111.065 C1 C2 O4 125.394
C2 C1 H7 109.534 C2 C1 H8 110.008
C2 C1 H9 110.008 C2 O3 C5 116.470
O3 C2 O4 123.541 O3 C5 C6 107.758
O3 C5 H10 108.693 O3 C5 H11 108.693
C5 C6 H12 109.695 C5 C6 H13 111.051
C5 C6 H14 111.051 C6 C5 H10 112.001
C6 C5 H11 112.001 H7 C1 H8 109.966
H7 C1 H9 109.966 H8 C1 H9 107.333
H10 C5 H11 107.610 H12 C6 H13 108.279
H12 C6 H14 108.279 H13 C6 H14 108.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.303      
2 C 0.457      
3 O -0.346      
4 O -0.405      
5 C 0.093      
6 C -0.260      
7 H 0.129      
8 H 0.100      
9 H 0.100      
10 H 0.079      
11 H 0.079      
12 H 0.088      
13 H 0.095      
14 H 0.095      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.317 2.039 0.000 2.064
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.832 -1.019 0.000
y -1.019 -43.269 0.000
z 0.000 0.000 -35.845
Traceless
 xyz
x 8.726 -1.019 0.000
y -1.019 -9.931 0.000
z 0.000 0.000 1.205
Polar
3z2-r22.410
x2-y212.438
xy-1.019
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.153 0.591 0.000
y 0.591 8.653 0.000
z 0.000 0.000 6.785


<r2> (average value of r2) Å2
<r2> 201.984
(<r2>)1/2 14.212