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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-307.744335
Energy at 298.15K 
HF Energy-307.744335
Nuclear repulsion energy243.311029
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 TPSSh/6-31G(2df,p)
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' 3170 3059 9.54 65.93 0.68 0.81
2 A' 3121 3012 25.94 76.12 0.70 0.83
3 A' 3055 2948 6.37 91.76 0.00 0.01
4 A' 3052 2945 13.99 123.25 0.06 0.11
5 A' 3044 2938 19.29 107.70 0.01 0.02
6 A' 1806 1743 212.68 3.24 0.29 0.44
7 A' 1528 1475 4.31 0.81 0.69 0.81
8 A' 1508 1455 1.94 19.14 0.75 0.86
9 A' 1482 1431 12.13 13.35 0.71 0.83
10 A' 1425 1375 4.12 4.62 0.69 0.82
11 A' 1402 1353 30.66 1.58 0.70 0.82
12 A' 1386 1337 10.62 3.15 0.59 0.74
13 A' 1263 1218 379.99 0.46 0.18 0.30
14 A' 1135 1095 14.24 6.58 0.12 0.22
15 A' 1068 1030 113.26 2.52 0.74 0.85
16 A' 1008 972 7.93 1.37 0.18 0.30
17 A' 942 909 5.38 1.73 0.18 0.30
18 A' 855 825 7.58 9.60 0.29 0.45
19 A' 630 608 5.79 7.80 0.30 0.46
20 A' 412 397 0.74 0.32 0.68 0.81
21 A' 359 346 9.68 2.63 0.28 0.43
22 A' 187 180 4.66 0.31 0.63 0.78
23 A" 3128 3019 39.37 22.77 0.75 0.86
24 A" 3123 3014 6.62 57.54 0.75 0.86
25 A" 3092 2984 7.96 82.77 0.75 0.86
26 A" 1499 1446 4.15 15.96 0.75 0.86
27 A" 1489 1437 5.98 13.35 0.75 0.86
28 A" 1287 1242 0.91 8.54 0.75 0.86
29 A" 1181 1140 3.76 1.31 0.75 0.86
30 A" 1061 1024 5.00 0.29 0.75 0.86
31 A" 797 769 0.65 0.20 0.75 0.86
32 A" 599 579 4.21 0.97 0.75 0.86
33 A" 258 249 0.98 0.00 0.75 0.86
34 A" 154 148 3.66 0.02 0.75 0.86
35 A" 55 53 0.12 0.26 0.75 0.86
36 A" 42 41 0.58 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25800.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 24897.5 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 TPSSh/6-31G(2df,p)
ABC
0.28015 0.06977 0.05766

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.315 0.049 0.000
C2 -0.912 -0.511 0.000
O3 0.000 0.489 0.000
O4 -0.617 -1.684 0.000
C5 1.378 0.051 0.000
C6 2.247 1.295 0.000
H7 -3.031 -0.772 0.000
H8 -2.467 0.679 0.881
H9 -2.467 0.679 -0.881
H10 1.548 -0.573 0.883
H11 1.548 -0.573 -0.883
H12 3.303 1.008 0.000
H13 2.054 1.904 -0.887
H14 2.054 1.904 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51102.35652.42603.69354.72931.08941.09391.09394.01134.01135.69984.82904.8290
C21.51101.35261.20932.35773.63822.13562.14752.14752.61402.61404.48013.92613.9261
O32.35651.35262.25811.44632.38733.28292.62682.62682.07462.07463.34392.64772.6477
O42.42601.20932.25812.64364.13192.58053.12753.12752.58822.58824.75534.56014.5601
C53.69352.35771.44632.64361.51744.48563.99503.99501.09441.09442.14992.16342.1634
C64.72933.63822.38734.13191.51745.66854.83544.83542.18132.18131.09441.09381.0938
H71.08942.13563.28292.58054.48565.66851.78891.78894.66774.66776.57985.81465.8146
H81.09392.14752.62683.12753.99504.83541.78891.76264.20604.56105.84685.00714.6844
H91.09392.14752.62683.12753.99504.83541.78891.76264.56104.20605.84684.68445.0071
H104.01132.61402.07462.58821.09442.18134.66774.20604.56101.76592.52223.08692.5289
H114.01132.61402.07462.58821.09442.18134.66774.56104.20601.76592.52222.52893.0869
H125.69984.48013.34394.75532.14991.09446.57985.84685.84682.52222.52221.77531.7753
H134.82903.92612.64774.56012.16341.09385.81465.00714.68443.08692.52891.77531.7746
H144.82903.92612.64774.56012.16341.09385.81464.68445.00712.52893.08691.77531.7746

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 110.635 C1 C2 O4 125.837
C2 C1 H7 109.350 C2 C1 H8 110.024
C2 C1 H9 110.024 C2 O3 C5 114.741
O3 C2 O4 123.528 O3 C5 C6 107.298
O3 C5 H10 108.686 O3 C5 H11 108.686
C5 C6 H12 109.744 C5 C6 H13 110.848
C5 C6 H14 110.848 C6 C5 H10 112.254
C6 C5 H11 112.254 H7 C1 H8 110.037
H7 C1 H9 110.037 H8 C1 H9 107.349
H10 C5 H11 107.568 H12 C6 H13 108.448
H12 C6 H14 108.448 H13 C6 H14 108.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.536      
2 C 0.477      
3 O -0.274      
4 O -0.381      
5 C -0.077      
6 C -0.448      
7 H 0.169      
8 H 0.168      
9 H 0.168      
10 H 0.146      
11 H 0.146      
12 H 0.144      
13 H 0.149      
14 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.299 1.871 0.000 1.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.224 0.556 0.000
y 0.556 7.617 0.000
z 0.000 0.000 5.975


<r2> (average value of r2) Å2
<r2> 200.976
(<r2>)1/2 14.177