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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-307.402112
Energy at 298.15K 
HF Energy-307.402112
Nuclear repulsion energy243.902034
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 HSEh1PBE/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' 3208 3063 4.49 62.11 0.69 0.82
2 A' 3156 3013 20.01 76.04 0.70 0.83
3 A' 3085 2945 8.31 60.09 0.01 0.01
4 A' 3083 2944 10.50 186.48 0.04 0.07
5 A' 3071 2932 16.91 145.63 0.00 0.01
6 A' 1836 1753 296.37 7.62 0.25 0.40
7 A' 1520 1451 7.10 1.56 0.72 0.84
8 A' 1500 1433 3.52 12.52 0.74 0.85
9 A' 1471 1404 15.08 8.54 0.68 0.81
10 A' 1437 1372 7.88 3.39 0.72 0.84
11 A' 1409 1345 104.19 1.19 0.74 0.85
12 A' 1387 1324 11.43 1.90 0.75 0.86
13 A' 1299 1241 402.29 0.83 0.44 0.62
14 A' 1146 1095 13.76 7.11 0.14 0.24
15 A' 1100 1050 89.41 2.64 0.74 0.85
16 A' 1017 971 6.12 1.05 0.19 0.32
17 A' 970 926 5.14 2.52 0.19 0.32
18 A' 874 834 8.13 7.10 0.29 0.44
19 A' 646 617 6.31 7.63 0.27 0.42
20 A' 432 412 0.96 0.34 0.69 0.82
21 A' 372 355 9.47 2.83 0.25 0.39
22 A' 194 185 6.09 0.29 0.59 0.74
23 A" 3163 3020 31.91 26.45 0.75 0.86
24 A" 3162 3019 1.87 52.97 0.75 0.86
25 A" 3130 2988 6.22 85.30 0.75 0.86
26 A" 1488 1421 8.80 10.10 0.75 0.86
27 A" 1478 1411 11.15 7.84 0.75 0.86
28 A" 1299 1240 1.07 8.21 0.75 0.86
29 A" 1180 1126 4.24 0.56 0.75 0.86
30 A" 1065 1016 6.79 0.07 0.75 0.86
31 A" 810 773 0.88 0.33 0.75 0.86
32 A" 611 584 4.88 0.99 0.75 0.86
33 A" 266 254 1.05 0.02 0.75 0.86
34 A" 157 150 5.21 0.02 0.75 0.86
35 A" 65 62 0.32 0.40 0.75 0.86
36 A" 33 31 0.49 0.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26057.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 24879.7 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 HSEh1PBE/6-31+G**
ABC
0.28214 0.06998 0.05789

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.306 0.026 0.000
C2 -0.906 -0.517 0.000
O3 0.000 0.477 0.000
O4 -0.607 -1.690 0.000
C5 1.379 0.070 0.000
C6 2.224 1.320 0.000
H7 -3.016 -0.801 0.000
H8 -2.464 0.654 0.881
H9 -2.464 0.654 -0.881
H10 1.562 -0.551 0.883
H11 1.562 -0.551 -0.883
H12 3.285 1.050 0.000
H13 2.026 1.928 -0.887
H14 2.026 1.928 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50132.35022.41423.68604.71221.08921.09361.09364.00944.00945.68414.81404.8140
C21.50131.34491.21042.35983.62992.12822.13852.13852.62162.62164.47423.91943.9194
O32.35021.34492.24991.43822.37883.27532.62312.62312.06772.06773.33422.64512.6451
O42.41421.21042.24992.65354.13242.56683.11703.11702.60392.60394.75924.56164.5616
C53.68602.35981.43822.65351.50934.48043.98643.98641.09471.09472.14262.15852.1585
C64.71223.62992.37884.13241.50935.65314.81714.81712.17272.17271.09431.09371.0937
H71.08922.12823.27532.56684.48045.65311.78811.78814.66844.66846.56655.80105.8010
H81.09362.13852.62313.11703.98644.81711.78811.76214.20264.55785.82964.99104.6674
H91.09362.13852.62313.11703.98644.81711.78811.76214.55784.20265.82964.66744.9910
H104.00942.62162.06772.60391.09472.17274.66844.20264.55781.76612.51213.08162.5225
H114.00942.62162.06772.60391.09472.17274.66844.55784.20261.76612.51212.52253.0816
H125.68414.47423.33424.75922.14261.09436.56655.82965.82962.51212.51211.77321.7732
H134.81403.91942.64514.56162.15851.09375.80104.99104.66743.08162.52251.77321.7740
H144.81403.91942.64514.56162.15851.09375.80104.66744.99102.52253.08161.77321.7740

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 111.208 C1 C2 O4 125.478
C2 C1 H7 109.449 C2 C1 H8 110.006
C2 C1 H9 110.006 C2 O3 C5 115.928
O3 C2 O4 123.314 O3 C5 C6 107.599
O3 C5 H10 108.687 O3 C5 H11 108.687
C5 C6 H12 109.734 C5 C6 H13 111.039
C5 C6 H14 111.039 C6 C5 H10 112.119
C6 C5 H11 112.119 H7 C1 H8 110.004
H7 C1 H9 110.004 H8 C1 H9 107.350
H10 C5 H11 107.539 H12 C6 H13 108.276
H12 C6 H14 108.276 H13 C6 H14 108.388
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.562      
2 C 0.447      
3 O -0.285      
4 O -0.455      
5 C 0.006      
6 C -0.628      
7 H 0.200      
8 H 0.197      
9 H 0.197      
10 H 0.176      
11 H 0.176      
12 H 0.172      
13 H 0.180      
14 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.320 2.107 0.000 2.131
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.305 -1.074 0.000
y -1.074 -43.444 0.000
z 0.000 0.000 -35.775
Traceless
 xyz
x 9.305 -1.074 0.000
y -1.074 -10.404 0.000
z 0.000 0.000 1.100
Polar
3z2-r22.199
x2-y213.139
xy-1.074
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.321 0.491 0.000
y 0.491 8.412 0.000
z 0.000 0.000 6.391


<r2> (average value of r2) Å2
<r2> 200.891
(<r2>)1/2 14.174