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

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-307.331461
Energy at 298.15K 
HF Energy-307.331461
Nuclear repulsion energy241.765617
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3125 3073 6.25 67.84 0.67 0.80
2 A' 3077 3026 20.41 80.41 0.70 0.83
3 A' 3007 2957 3.11 110.81 0.01 0.01
4 A' 2998 2949 17.69 70.44 0.02 0.04
5 A' 2996 2947 15.23 142.25 0.04 0.08
6 A' 1778 1749 200.48 3.19 0.26 0.41
7 A' 1496 1471 5.60 1.61 0.67 0.80
8 A' 1478 1453 2.57 24.18 0.75 0.86
9 A' 1453 1429 13.27 15.75 0.71 0.83
10 A' 1398 1375 6.03 9.32 0.66 0.80
11 A' 1371 1348 44.41 3.50 0.66 0.80
12 A' 1353 1331 9.70 5.12 0.66 0.79
13 A' 1237 1216 366.62 0.57 0.04 0.08
14 A' 1115 1097 11.99 5.57 0.18 0.31
15 A' 1051 1033 101.67 2.52 0.68 0.81
16 A' 987 971 10.65 1.01 0.21 0.34
17 A' 932 916 6.27 2.00 0.16 0.28
18 A' 840 826 6.56 9.42 0.34 0.50
19 A' 623 613 4.44 8.01 0.33 0.50
20 A' 416 409 0.72 0.46 0.65 0.79
21 A' 359 353 9.15 3.13 0.32 0.49
22 A' 188 185 4.72 0.31 0.65 0.79
23 A" 3082 3031 29.91 32.49 0.75 0.86
24 A" 3075 3025 4.72 60.62 0.75 0.86
25 A" 3036 2986 12.76 77.07 0.75 0.86
26 A" 1469 1445 6.32 20.64 0.75 0.86
27 A" 1457 1433 9.11 17.30 0.75 0.86
28 A" 1260 1240 0.31 12.05 0.75 0.86
29 A" 1151 1132 4.14 1.97 0.75 0.86
30 A" 1033 1016 6.95 0.66 0.75 0.86
31 A" 791 778 1.41 0.20 0.75 0.86
32 A" 582 573 3.08 1.37 0.75 0.86
33 A" 264 259 0.93 0.01 0.75 0.86
34 A" 154 152 3.76 0.02 0.75 0.86
35 A" 54 53 0.19 0.36 0.75 0.86
36 A" 20 20 0.83 0.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25351.4 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 24933.1 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 PBEPBEultrafine/6-31G*
ABC
0.27601 0.06901 0.05700

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.323 0.044 0.000
C2 -0.916 -0.518 0.000
O3 0.000 0.494 0.000
O4 -0.619 -1.703 0.000
C5 1.386 0.061 0.000
C6 2.253 1.308 0.000
H7 -3.045 -0.784 0.000
H8 -2.482 0.679 0.887
H9 -2.482 0.679 -0.887
H10 1.563 -0.570 0.889
H11 1.563 -0.570 -0.889
H12 3.319 1.023 0.000
H13 2.059 1.924 -0.894
H14 2.059 1.924 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51492.36622.43973.70944.74731.09811.10281.10284.03304.03305.72604.85184.8518
C21.51491.36441.22152.37383.65702.14572.16142.16142.63372.63374.50623.95133.9513
O32.36621.36442.28171.45232.39553.30212.64262.64262.08882.08883.36052.66192.6619
O42.43971.22152.28172.67044.16072.59413.15103.15102.61392.61394.78924.59624.5962
C53.70942.37381.45232.67041.51874.51114.01684.01681.10411.10412.15872.17332.1733
C64.74733.65702.39554.16071.51875.69584.85844.85842.18942.18941.10301.10251.1025
H71.09812.14573.30212.59414.51115.69581.80081.80084.69754.69756.61525.84695.8469
H81.10282.16142.64263.15104.01684.85841.80081.77484.23334.59085.87845.03484.7093
H91.10282.16142.64263.15104.01684.85841.80081.77484.59084.23335.87844.70935.0348
H104.03302.63372.08882.61391.10412.18944.69754.23334.59081.77752.53233.10552.5431
H114.03302.63372.08882.61391.10412.18944.69754.59084.23331.77752.53232.54313.1055
H125.72604.50623.36054.78922.15871.10306.61525.87845.87842.53232.53231.78751.7875
H134.85183.95132.66194.59622.17331.10255.84695.03484.70933.10552.54311.78751.7873
H144.85183.95132.66194.59622.17331.10255.84694.70935.03482.54313.10551.78751.7873

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 110.427 C1 C2 O4 125.806
C2 C1 H7 109.367 C2 C1 H8 110.330
C2 C1 H9 110.330 C2 O3 C5 114.831
O3 C2 O4 123.767 O3 C5 C6 107.449
O3 C5 H10 108.829 O3 C5 H11 108.829
C5 C6 H12 109.841 C5 C6 H13 111.026
C5 C6 H14 111.026 C6 C5 H10 112.218
C6 C5 H11 112.218 H7 C1 H8 109.815
H7 C1 H9 109.815 H8 C1 H9 107.160
H10 C5 H11 107.219 H12 C6 H13 108.279
H12 C6 H14 108.279 H13 C6 H14 108.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.570      
2 C 0.554      
3 O -0.401      
4 O -0.435      
5 C -0.083      
6 C -0.505      
7 H 0.194      
8 H 0.193      
9 H 0.193      
10 H 0.171      
11 H 0.171      
12 H 0.167      
13 H 0.175      
14 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.325 1.879 0.000 1.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.333 -0.980 0.000
y -0.980 -41.688 0.000
z 0.000 0.000 -35.216
Traceless
 xyz
x 8.120 -0.980 0.000
y -0.980 -8.914 0.000
z 0.000 0.000 0.794
Polar
3z2-r21.588
x2-y211.356
xy-0.980
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.054 0.549 0.000
y 0.549 7.541 0.000
z 0.000 0.000 5.732


<r2> (average value of r2) Å2
<r2> 203.194
(<r2>)1/2 14.255