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

using model chemistry: wB97X-D/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-307.631089
Energy at 298.15K 
HF Energy-307.631089
Nuclear repulsion energy243.716742
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 wB97X-D/6-31+G**
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' 3204 3051 5.68 61.36 0.70 0.82
2 A' 3154 3004 23.07 73.96 0.71 0.83
3 A' 3085 2937 19.65 55.27 0.12 0.21
4 A' 3083 2936 0.62 189.09 0.01 0.02
5 A' 3069 2922 18.62 133.29 0.01 0.01
6 A' 1844 1756 306.25 7.51 0.27 0.42
7 A' 1529 1456 6.58 1.96 0.72 0.83
8 A' 1510 1438 3.94 12.51 0.73 0.85
9 A' 1481 1411 14.58 8.62 0.69 0.82
10 A' 1449 1380 6.65 3.08 0.65 0.79
11 A' 1422 1354 107.28 1.15 0.75 0.86
12 A' 1400 1334 9.21 1.61 0.75 0.86
13 A' 1313 1251 420.24 0.73 0.45 0.62
14 A' 1151 1096 18.40 7.32 0.14 0.24
15 A' 1105 1052 81.59 2.66 0.74 0.85
16 A' 1025 976 4.93 1.35 0.22 0.36
17 A' 969 922 4.26 2.44 0.25 0.40
18 A' 881 839 9.04 7.22 0.28 0.43
19 A' 647 616 6.76 7.61 0.27 0.42
20 A' 437 416 1.00 0.33 0.71 0.83
21 A' 376 358 9.61 2.79 0.25 0.40
22 A' 197 188 6.17 0.27 0.61 0.76
23 A" 3163 3012 8.18 61.94 0.75 0.86
24 A" 3162 3011 31.59 13.98 0.75 0.86
25 A" 3133 2983 5.51 86.98 0.75 0.86
26 A" 1498 1427 8.69 10.48 0.75 0.86
27 A" 1488 1417 11.06 8.32 0.75 0.86
28 A" 1310 1248 1.22 8.66 0.75 0.86
29 A" 1188 1131 4.38 0.50 0.75 0.86
30 A" 1075 1023 6.77 0.14 0.75 0.86
31 A" 820 780 0.60 0.29 0.75 0.86
32 A" 615 586 5.74 1.07 0.75 0.86
33 A" 267 255 1.04 0.02 0.75 0.86
34 A" 155 148 5.41 0.02 0.75 0.86
35 A" 69 66 0.39 0.38 0.75 0.86
36 A" 16 15 0.43 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26145.2 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 24898.1 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 wB97X-D/6-31+G**
ABC
0.28141 0.06982 0.05776

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.017 0.000
C2 -0.904 -0.524 0.000
O3 0.000 0.471 0.000
O4 -0.603 -1.696 0.000
C5 1.383 0.076 0.000
C6 2.217 1.338 0.000
H7 -3.015 -0.812 0.000
H8 -2.466 0.643 0.882
H9 -2.466 0.643 -0.882
H10 1.573 -0.540 0.884
H11 1.573 -0.540 -0.884
H12 3.279 1.076 0.000
H13 2.011 1.942 -0.887
H14 2.011 1.942 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50502.35292.41703.69204.71491.08901.09301.09304.01954.01955.68764.81194.8119
C21.50501.34391.21022.36413.63432.13092.13972.13972.62972.62974.47883.91983.9198
O32.35291.34392.24891.43822.38083.27682.62452.62452.06812.06813.33472.64512.6451
O42.41701.21022.24892.66114.14222.56913.11743.11742.61722.61724.77034.56674.5667
C53.69202.36411.43822.66111.51334.48683.98913.98911.09401.09402.14422.16022.1602
C64.71493.63432.38084.14221.51335.65704.81594.81592.17382.17381.09391.09321.0932
H71.08902.13093.27682.56914.48685.65701.78791.78794.68024.68026.57175.79965.7996
H81.09302.13972.62453.11743.98914.81591.78791.76384.20844.56385.82874.98604.6615
H91.09302.13972.62453.11743.98914.81591.78791.76384.56384.20845.82874.66154.9860
H104.01952.62972.06812.61721.09402.17384.68024.20844.56381.76782.51143.08112.5211
H114.01952.62972.06812.61721.09402.17384.68024.56384.20841.76782.51142.52113.0811
H125.68764.47883.33474.77032.14421.09396.57175.82875.82872.51142.51141.77391.7739
H134.81193.91982.64514.56672.16021.09325.79964.98604.66153.08112.52111.77391.7747
H144.81193.91982.64514.56672.16021.09325.79964.66154.98602.52113.08111.77391.7747

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 111.236 C1 C2 O4 125.443
C2 C1 H7 109.414 C2 C1 H8 109.875
C2 C1 H9 109.875 C2 O3 C5 116.326
O3 C2 O4 123.321 O3 C5 C6 107.513
O3 C5 H10 108.755 O3 C5 H11 108.755
C5 C6 H12 109.608 C5 C6 H13 110.919
C5 C6 H14 110.919 C6 C5 H10 111.968
C6 C5 H11 111.968 H7 C1 H8 110.041
H7 C1 H9 110.041 H8 C1 H9 107.575
H10 C5 H11 107.801 H12 C6 H13 108.399
H12 C6 H14 108.399 H13 C6 H14 108.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.532      
2 C 0.462      
3 O -0.321      
4 O -0.470      
5 C 0.033      
6 C -0.589      
7 H 0.194      
8 H 0.190      
9 H 0.190      
10 H 0.167      
11 H 0.167      
12 H 0.164      
13 H 0.172      
14 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.321 2.150 0.000 2.173
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.094 -1.056 0.000
y -1.056 -43.507 0.000
z 0.000 0.000 -35.653
Traceless
 xyz
x 9.486 -1.056 0.000
y -1.056 -10.634 0.000
z 0.000 0.000 1.148
Polar
3z2-r22.296
x2-y213.413
xy-1.056
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.123 0.474 0.000
y 0.474 8.369 0.000
z 0.000 0.000 6.394


<r2> (average value of r2) Å2
<r2> 201.218
(<r2>)1/2 14.185