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

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-59.303524
Energy at 298.15K 
HF Energy-59.303524
Nuclear repulsion energy133.315763
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/CEP-121G
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' 3149 3068 14.07 67.46 0.70 0.83
2 A' 3090 3011 42.05 77.13 0.72 0.84
3 A' 3027 2950 19.76 120.39 0.07 0.13
4 A' 3021 2944 4.72 163.46 0.00 0.01
5 A' 3002 2926 27.03 126.29 0.02 0.04
6 A' 1662 1620 204.65 2.95 0.39 0.56
7 A' 1531 1492 9.99 1.09 0.74 0.85
8 A' 1516 1478 4.04 23.08 0.74 0.85
9 A' 1494 1455 29.43 14.64 0.68 0.81
10 A' 1441 1404 9.79 3.60 0.75 0.86
11 A' 1427 1390 38.09 2.55 0.74 0.85
12 A' 1398 1362 1.30 3.67 0.69 0.82
13 A' 1247 1215 397.17 0.24 0.60 0.75
14 A' 1132 1103 4.94 9.26 0.15 0.27
15 A' 1052 1026 148.73 4.55 0.67 0.80
16 A' 1017 992 6.75 2.82 0.31 0.47
17 A' 921 898 25.50 2.24 0.32 0.48
18 A' 811 790 11.19 16.07 0.26 0.41
19 A' 611 595 7.68 11.39 0.33 0.50
20 A' 412 402 0.73 0.79 0.62 0.77
21 A' 349 340 9.64 4.53 0.33 0.50
22 A' 179 175 6.72 0.40 0.64 0.78
23 A" 3110 3031 67.91 9.72 0.75 0.86
24 A" 3104 3025 11.16 60.29 0.75 0.86
25 A" 3080 3002 2.02 103.87 0.75 0.86
26 A" 1506 1468 8.38 15.40 0.75 0.86
27 A" 1495 1457 13.12 13.90 0.75 0.86
28 A" 1282 1250 0.29 13.33 0.75 0.86
29 A" 1173 1143 5.08 2.53 0.75 0.86
30 A" 1078 1051 6.63 0.64 0.75 0.86
31 A" 813 792 1.05 0.16 0.75 0.86
32 A" 574 560 6.14 1.66 0.75 0.86
33 A" 248 242 1.91 0.04 0.75 0.86
34 A" 149 145 7.66 0.01 0.75 0.86
35 A" 57 56 0.04 0.43 0.75 0.86
36 A" 46 44 1.31 0.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25602.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 24950.0 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/CEP-121G
ABC
0.26827 0.06642 0.05489

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.358 -0.003 0.000
C2 -0.938 -0.547 0.000
O3 0.000 0.483 0.000
O4 -0.613 -1.755 0.000
C5 1.442 0.094 0.000
C6 2.249 1.396 0.000
H7 -3.063 -0.836 0.000
H8 -2.518 0.625 0.884
H9 -2.518 0.625 -0.884
H10 1.632 -0.520 0.889
H11 1.632 -0.520 -0.889
H12 3.323 1.166 0.000
H13 2.023 1.995 -0.889
H14 2.023 1.995 0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.52052.40732.47243.80144.81491.09161.09611.09614.12004.12005.79984.89614.8961
C21.52051.39281.25072.46503.73282.14462.15672.15672.71932.71934.59244.00244.0024
O32.40731.39282.32001.49392.42773.33492.67272.67272.11142.11143.39252.67762.6776
O42.47241.25072.32002.76444.25692.61653.17383.17382.71202.71204.90134.66924.6692
C53.80142.46501.49392.76441.53214.60034.09274.09271.09661.09662.16482.17812.1781
C64.81493.73282.42774.25691.53215.76234.90984.90982.20052.20051.09821.09611.0961
H71.09162.14463.33492.61654.60035.76231.79231.79234.78874.78876.69255.88825.8882
H81.09612.15672.67273.17384.09274.90981.79231.76844.30494.65585.93265.06384.7431
H91.09612.15672.67273.17384.09274.90981.79231.76844.65584.30495.93264.74315.0638
H104.12002.71932.11142.71201.09662.20054.78874.30494.65581.77812.54793.10502.5454
H114.12002.71932.11142.71201.09662.20054.78874.65584.30491.77812.54792.54543.1050
H125.79984.59243.39254.90132.16481.09826.69255.93265.93262.54792.54791.78071.7807
H134.89614.00242.67764.66922.17811.09615.88825.06384.74313.10502.54541.78071.7784
H144.89614.00242.67764.66922.17811.09615.88824.74315.06382.54543.10501.78071.7784

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 111.369 C1 C2 O4 126.018
C2 C1 H7 109.283 C2 C1 H8 109.970
C2 C1 H9 109.970 C2 O3 C5 117.240
O3 C2 O4 122.613 O3 C5 C6 106.691
O3 C5 H10 108.207 O3 C5 H11 108.207
C5 C6 H12 109.678 C5 C6 H13 110.846
C5 C6 H14 110.846 C6 C5 H10 112.615
C6 C5 H11 112.615 H7 C1 H8 110.027
H7 C1 H9 110.027 H8 C1 H9 107.547
H10 C5 H11 108.326 H12 C6 H13 108.484
H12 C6 H14 108.484 H13 C6 H14 108.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.583      
2 C 0.186      
3 O -0.216      
4 O -0.180      
5 C -0.101      
6 C -0.450      
7 H 0.186      
8 H 0.182      
9 H 0.182      
10 H 0.162      
11 H 0.162      
12 H 0.149      
13 H 0.161      
14 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.371 2.103 0.000 2.136
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.433 -0.953 0.000
y -0.953 -44.594 0.000
z 0.000 0.000 -35.926
Traceless
 xyz
x 10.827 -0.953 0.000
y -0.953 -11.914 0.000
z 0.000 0.000 1.087
Polar
3z2-r22.175
x2-y215.161
xy-0.953
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.339 0.548 0.000
y 0.548 8.179 0.000
z 0.000 0.000 6.181


<r2> (average value of r2) Å2
<r2> 171.045
(<r2>)1/2 13.078