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

using model chemistry: B3PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-307.701062
Energy at 298.15K 
HF Energy-307.701062
Nuclear repulsion energy243.888664
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 B3PW91/TZVP
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' 3178 3065 5.56 60.77 0.68 0.81
2 A' 3127 3015 21.32 71.71 0.70 0.83
3 A' 3064 2955 2.95 127.88 0.00 0.01
4 A' 3060 2950 14.94 116.07 0.06 0.12
5 A' 3051 2942 15.47 159.33 0.00 0.01
6 A' 1815 1751 277.93 4.53 0.27 0.42
7 A' 1517 1462 7.28 1.57 0.75 0.86
8 A' 1495 1442 3.26 13.54 0.75 0.85
9 A' 1468 1416 14.49 8.48 0.67 0.80
10 A' 1429 1378 5.42 3.06 0.75 0.86
11 A' 1402 1352 56.98 0.61 0.72 0.84
12 A' 1387 1337 20.49 2.63 0.70 0.83
13 A' 1275 1229 418.27 0.31 0.22 0.36
14 A' 1141 1100 11.64 7.28 0.12 0.22
15 A' 1080 1042 109.25 2.55 0.75 0.85
16 A' 1013 977 7.29 1.33 0.20 0.33
17 A' 956 922 7.00 2.23 0.14 0.25
18 A' 867 836 9.19 7.10 0.31 0.47
19 A' 645 622 5.07 7.85 0.31 0.48
20 A' 433 417 0.87 0.36 0.66 0.79
21 A' 370 357 8.94 3.05 0.29 0.46
22 A' 193 186 5.58 0.32 0.62 0.77
23 A" 3135 3023 33.40 23.78 0.75 0.86
24 A" 3133 3021 3.29 51.71 0.75 0.86
25 A" 3100 2989 6.58 81.94 0.75 0.86
26 A" 1483 1430 7.69 10.48 0.75 0.86
27 A" 1473 1421 10.35 8.49 0.75 0.86
28 A" 1299 1252 0.89 9.31 0.75 0.86
29 A" 1177 1135 4.11 0.76 0.75 0.86
30 A" 1063 1025 6.56 0.19 0.75 0.86
31 A" 812 783 0.87 0.18 0.75 0.86
32 A" 608 586 4.96 1.42 0.75 0.86
33 A" 266 256 1.09 0.07 0.75 0.86
34 A" 155 149 5.04 0.02 0.75 0.86
35 A" 63 60 0.37 0.37 0.75 0.86
36 A" 29 28 0.51 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25880.3 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 24956.4 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 B3PW91/TZVP
ABC
0.28281 0.06978 0.05778

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.307 0.027 0.000
C2 -0.908 -0.521 0.000
O3 0.000 0.474 0.000
O4 -0.614 -1.689 0.000
C5 1.383 0.071 0.000
C6 2.227 1.322 0.000
H7 -3.018 -0.795 0.000
H8 -2.463 0.655 0.880
H9 -2.463 0.655 -0.880
H10 1.571 -0.547 0.881
H11 1.571 -0.547 -0.881
H12 3.285 1.051 0.000
H13 2.030 1.929 -0.885
H14 2.030 1.929 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50242.34962.41043.69054.71511.08731.09171.09174.01774.01775.68534.81704.8170
C21.50241.34661.20462.36663.63652.12792.13842.13842.63092.63094.47853.92603.9260
O32.34961.34662.24821.44072.38313.27392.62142.62142.07022.07023.33592.64962.6496
O42.41041.20462.24822.66264.13992.56463.11183.11182.61822.61824.76644.56764.5676
C53.69052.36661.44072.66261.50864.48603.98843.98841.09271.09272.13982.15682.1568
C64.71513.63652.38314.13991.50865.65634.81814.81812.16802.16801.09241.09161.0916
H71.08732.12793.27392.56464.48605.65631.78431.78434.67934.67936.56845.80365.8036
H81.09172.13842.62143.11183.98844.81811.78431.75944.20884.56235.82874.99204.6695
H91.09172.13842.62143.11183.98844.81811.78431.75944.56234.20885.82874.66954.9920
H104.01772.63092.07022.61821.09272.16804.67934.20884.56231.76232.50433.07592.5180
H114.01772.63092.07022.61821.09272.16804.67934.56234.20881.76232.50432.51803.0759
H125.68534.47853.33594.76642.13981.09246.56845.82875.82872.50432.50431.76951.7695
H134.81703.92602.64964.56762.15681.09165.80364.99204.66953.07592.51801.76951.7710
H144.81703.92602.64964.56762.15681.09165.80364.66954.99202.51803.07591.76951.7710

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 111.006 C1 C2 O4 125.504
C2 C1 H7 109.464 C2 C1 H8 110.037
C2 C1 H9 110.037 C2 O3 C5 116.183
O3 C2 O4 123.491 O3 C5 C6 107.787
O3 C5 H10 108.828 O3 C5 H11 108.828
C5 C6 H12 109.670 C5 C6 H13 111.084
C5 C6 H14 111.084 C6 C5 H10 111.915
C6 C5 H11 111.915 H7 C1 H8 109.947
H7 C1 H9 109.947 H8 C1 H9 107.384
H10 C5 H11 107.496 H12 C6 H13 108.239
H12 C6 H14 108.239 H13 C6 H14 108.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.399      
2 C 0.270      
3 O -0.193      
4 O -0.327      
5 C -0.097      
6 C -0.332      
7 H 0.154      
8 H 0.143      
9 H 0.143      
10 H 0.133      
11 H 0.133      
12 H 0.121      
13 H 0.126      
14 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.326 2.033 0.000 2.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.302 -1.059 0.000
y -1.059 -43.114 0.000
z 0.000 0.000 -35.518
Traceless
 xyz
x 9.014 -1.059 0.000
y -1.059 -10.204 0.000
z 0.000 0.000 1.191
Polar
3z2-r22.382
x2-y212.812
xy-1.059
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.375 0.501 0.000
y 0.501 8.292 0.000
z 0.000 0.000 6.456


<r2> (average value of r2) Å2
<r2> 201.088
(<r2>)1/2 14.181