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

using model chemistry: B2PLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-307.588212
Energy at 298.15K 
HF Energy-307.207166
Nuclear repulsion energy243.719336
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 B2PLYP/aug-cc-pVTZ
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' 3184 3060 5.69 54.87 0.67 0.80
2 A' 3134 3012 21.02 64.97 0.69 0.82
3 A' 3076 2956 17.26 17.71 0.22 0.36
4 A' 3075 2955 0.13 259.06 0.01 0.02
5 A' 3061 2941 15.57 179.64 0.00 0.01
6 A' 1776 1707 257.65 9.28 0.25 0.40
7 A' 1533 1473 6.22 1.03 0.74 0.85
8 A' 1513 1454 2.92 6.86 0.75 0.86
9 A' 1486 1428 15.66 5.82 0.60 0.75
10 A' 1436 1380 4.48 0.89 0.75 0.86
11 A' 1416 1361 37.21 0.10 0.71 0.83
12 A' 1401 1347 14.73 0.88 0.43 0.61
13 A' 1270 1221 407.72 1.35 0.61 0.75
14 A' 1145 1100 9.16 8.24 0.10 0.18
15 A' 1078 1036 123.00 2.00 0.74 0.85
16 A' 1020 980 6.79 1.84 0.17 0.29
17 A' 951 914 8.58 2.12 0.14 0.25
18 A' 862 828 10.92 8.31 0.18 0.31
19 A' 639 614 5.77 8.15 0.20 0.33
20 A' 431 414 0.86 0.31 0.67 0.80
21 A' 369 355 8.46 3.50 0.21 0.35
22 A' 194 187 5.60 0.38 0.51 0.68
23 A" 3143 3021 34.02 14.14 0.75 0.86
24 A" 3141 3019 3.65 49.27 0.75 0.86
25 A" 3114 2993 3.06 78.94 0.75 0.86
26 A" 1501 1443 6.33 4.93 0.75 0.86
27 A" 1494 1435 7.77 4.07 0.75 0.86
28 A" 1307 1256 1.05 3.42 0.75 0.86
29 A" 1189 1142 3.45 0.42 0.75 0.86
30 A" 1076 1034 4.87 0.07 0.75 0.86
31 A" 818 786 0.56 0.20 0.75 0.86
32 A" 611 587 5.03 0.33 0.75 0.86
33 A" 264 254 0.98 0.01 0.75 0.86
34 A" 153 147 4.79 0.03 0.75 0.86
35 A" 70 67 0.33 0.20 0.75 0.86
36 A" 44 43 0.31 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25987.2 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 24973.7 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 B2PLYP/aug-cc-pVTZ
ABC
0.28187 0.06977 0.05772

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.030 0.000
C2 -0.910 -0.519 0.000
O3 0.000 0.480 0.000
O4 -0.613 -1.690 0.000
C5 1.385 0.066 0.000
C6 2.230 1.318 0.000
H7 -3.019 -0.790 0.000
H8 -2.461 0.655 0.878
H9 -2.461 0.655 -0.878
H10 1.564 -0.549 0.880
H11 1.564 -0.549 -0.880
H12 3.285 1.048 0.000
H13 2.030 1.922 -0.883
H14 2.030 1.922 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50302.35272.41573.69454.71851.08401.08831.08834.01444.01445.68614.81544.8154
C21.50301.35061.20882.36833.63752.12632.13392.13392.62622.62624.47773.92143.9214
O32.35271.35062.25501.44532.38243.27482.61862.61862.06882.06883.33372.64212.6421
O42.41571.20882.25502.66094.13952.56853.11223.11222.61122.61124.76394.56234.5623
C53.69452.36831.44532.66091.51024.48633.98843.98841.08871.08872.13842.15362.1536
C64.71853.63752.38244.13951.51025.65624.81804.81802.16902.16901.08911.08841.0884
H71.08402.12633.27482.56854.48635.65621.78041.78044.67314.67316.56615.79845.7984
H81.08832.13392.61863.11223.98844.81801.78041.75554.20174.55445.82574.98724.6659
H91.08832.13392.61863.11223.98844.81801.78041.75554.55444.20175.82574.66594.9872
H104.01442.62622.06882.61121.08872.16904.67314.20174.55441.75932.50703.07102.5146
H114.01442.62622.06882.61121.08872.16904.67314.55444.20171.75932.50702.51463.0710
H125.68614.47773.33374.76392.13841.08916.56615.82575.82572.50702.50701.76621.7662
H134.81543.92142.64214.56232.15361.08845.79844.98724.66593.07102.51461.76621.7666
H144.81543.92142.64214.56232.15361.08845.79844.66594.98722.51463.07101.76621.7666

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 110.955 C1 C2 O4 125.597
C2 C1 H7 109.483 C2 C1 H8 109.833
C2 C1 H9 109.833 C2 O3 C5 115.745
O3 C2 O4 123.448 O3 C5 C6 107.413
O3 C5 H10 108.640 O3 C5 H11 108.640
C5 C6 H12 109.646 C5 C6 H13 110.906
C5 C6 H14 110.906 C6 C5 H10 112.127
C6 C5 H11 112.127 H7 C1 H8 110.079
H7 C1 H9 110.079 H8 C1 H9 107.510
H10 C5 H11 107.797 H12 C6 H13 108.405
H12 C6 H14 108.405 H13 C6 H14 108.499
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.553      
2 C 0.300      
3 O -0.167      
4 O -0.621      
5 C -0.107      
6 C -0.831      
7 H 0.304      
8 H 0.222      
9 H 0.222      
10 H 0.266      
11 H 0.266      
12 H 0.269      
13 H 0.216      
14 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.318 2.021 0.000 2.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.947 -1.052 -0.006
y -1.052 -43.482 -0.011
z -0.006 -0.011 -36.004
Traceless
 xyz
x 8.796 -1.052 -0.006
y -1.052 -10.007 -0.011
z -0.006 -0.011 1.211
Polar
3z2-r22.422
x2-y212.535
xy-1.052
xz-0.006
yz-0.011


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.293 0.602 0.000
y 0.602 8.917 0.001
z 0.000 0.001 6.945


<r2> (average value of r2) Å2
<r2> 201.452
(<r2>)1/2 14.193