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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-307.670336
Energy at 298.15K 
HF Energy-307.670336
Nuclear repulsion energy243.867022
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 mPW1PW91/aug-cc-pVDZ
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' 3206 3072 5.57 55.39 0.67 0.81
2 A' 3154 3023 20.84 67.43 0.69 0.82
3 A' 3085 2956 17.49 91.16 0.05 0.09
4 A' 3079 2951 1.36 195.45 0.00 0.01
5 A' 3068 2940 16.81 171.25 0.00 0.01
6 A' 1820 1745 276.92 7.40 0.25 0.39
7 A' 1500 1437 6.98 1.21 0.75 0.86
8 A' 1476 1415 2.93 6.38 0.75 0.86
9 A' 1447 1387 14.95 5.46 0.60 0.75
10 A' 1422 1362 8.65 1.56 0.75 0.86
11 A' 1390 1332 100.99 0.27 0.65 0.79
12 A' 1368 1311 15.28 0.87 0.32 0.49
13 A' 1285 1231 365.79 1.09 0.61 0.76
14 A' 1141 1094 8.98 7.96 0.10 0.19
15 A' 1096 1051 96.41 1.94 0.75 0.86
16 A' 1009 967 9.01 1.11 0.15 0.26
17 A' 967 927 6.02 2.57 0.12 0.21
18 A' 870 833 7.10 6.18 0.21 0.34
19 A' 646 619 6.73 7.41 0.20 0.34
20 A' 429 411 1.00 0.27 0.66 0.79
21 A' 370 355 9.30 3.15 0.21 0.35
22 A' 194 186 5.89 0.39 0.55 0.71
23 A" 3161 3030 34.63 16.74 0.75 0.86
24 A" 3158 3027 3.85 51.19 0.75 0.86
25 A" 3131 3000 4.31 79.16 0.75 0.86
26 A" 1465 1404 6.94 5.00 0.75 0.86
27 A" 1455 1395 8.22 4.19 0.75 0.86
28 A" 1288 1235 1.13 3.65 0.75 0.86
29 A" 1172 1123 3.44 0.31 0.75 0.86
30 A" 1053 1009 6.17 0.08 0.75 0.86
31 A" 806 772 0.95 0.20 0.75 0.86
32 A" 611 585 4.55 0.35 0.75 0.86
33 A" 262 251 0.95 0.02 0.75 0.86
34 A" 156 149 4.62 0.03 0.75 0.86
35 A" 65 63 0.38 0.22 0.75 0.86
36 A" 46 44 0.39 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25925.9 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 24844.8 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 mPW1PW91/aug-cc-pVDZ
ABC
0.28277 0.06993 0.05790

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.308 0.032 0.000
C2 -0.909 -0.512 0.000
O3 0.000 0.480 0.000
O4 -0.613 -1.684 0.000
C5 1.378 0.065 0.000
C6 2.232 1.309 0.000
H7 -3.019 -0.797 0.000
H8 -2.463 0.662 0.884
H9 -2.463 0.662 -0.884
H10 1.556 -0.558 0.885
H11 1.556 -0.558 -0.885
H12 3.292 1.025 0.000
H13 2.040 1.919 -0.890
H14 2.040 1.919 0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50082.35092.41183.68564.71631.09171.09641.09644.00754.00755.68704.82244.8224
C21.50081.34581.20872.35833.63092.12872.13862.13862.61952.61954.47313.92413.9241
O32.35091.34582.24931.43902.38113.27762.62282.62282.06952.06953.33662.65022.6502
O42.41181.20872.24932.64954.12912.56433.11563.11562.59892.59894.75204.56184.5618
C53.68562.35831.43902.64951.50914.47993.98583.98581.09691.09692.14142.16082.1608
C64.71633.63092.38114.12911.50915.65734.82124.82122.17372.17371.09691.09641.0964
H71.09172.12873.27762.56434.47995.65731.79381.79384.66564.66566.56815.81005.8100
H81.09642.13862.62283.11563.98584.82121.79381.76754.19994.55725.83355.00004.6748
H91.09642.13862.62283.11563.98584.82121.79381.76754.55724.19995.83354.67485.0000
H104.00752.61952.06952.59891.09692.17374.66564.19994.55721.77042.51033.08572.5240
H114.00752.61952.06952.59891.09692.17374.66564.55724.19991.77042.51032.52403.0857
H125.68704.47313.33664.75202.14141.09696.56815.83355.83352.51032.51031.77771.7777
H134.82243.92412.65024.56182.16081.09645.81005.00004.67483.08572.52401.77771.7798
H144.82243.92412.65024.56182.16081.09645.81004.67485.00002.52403.08571.77771.7798

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 111.241 C1 C2 O4 125.437
C2 C1 H7 109.380 C2 C1 H8 109.881
C2 C1 H9 109.881 C2 O3 C5 115.706
O3 C2 O4 123.322 O3 C5 C6 107.718
O3 C5 H10 108.636 O3 C5 H11 108.636
C5 C6 H12 109.495 C5 C6 H13 111.072
C5 C6 H14 111.072 C6 C5 H10 112.077
C6 C5 H11 112.077 H7 C1 H8 110.129
H7 C1 H9 110.129 H8 C1 H9 107.420
H10 C5 H11 107.603 H12 C6 H13 108.297
H12 C6 H14 108.297 H13 C6 H14 108.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.280      
2 C 0.480      
3 O -0.573      
4 O -0.539      
5 C 0.922      
6 C 0.359      
7 H -0.082      
8 H -0.025      
9 H -0.025      
10 H -0.260      
11 H -0.260      
12 H -0.086      
13 H -0.095      
14 H -0.095      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.277 2.083 0.000 2.101
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.455 -1.082 0.000
y -1.082 -43.125 0.000
z 0.000 0.000 -35.629
Traceless
 xyz
x 8.922 -1.082 0.000
y -1.082 -10.083 0.000
z 0.000 0.000 1.161
Polar
3z2-r22.322
x2-y212.670
xy-1.082
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.279 0.580 0.000
y 0.580 8.861 0.000
z 0.000 0.000 6.929


<r2> (average value of r2) Å2
<r2> 200.858
(<r2>)1/2 14.172