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

using model chemistry: BLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-307.713901
Energy at 298.15K 
HF Energy-307.713901
Nuclear repulsion energy241.067570
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 BLYP/6-311+G(3df,2p)
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' 3073 3056 7.65 62.64 0.65 0.79
2 A' 3020 3004 24.93 76.10 0.68 0.81
3 A' 2973 2957 5.74 141.51 0.01 0.02
4 A' 2969 2953 13.03 141.67 0.04 0.07
5 A' 2961 2945 18.49 175.07 0.01 0.02
6 A' 1709 1700 252.99 8.62 0.23 0.38
7 A' 1481 1473 5.91 0.77 0.75 0.86
8 A' 1464 1456 3.08 7.67 0.75 0.86
9 A' 1440 1432 16.06 6.26 0.59 0.74
10 A' 1382 1375 5.14 1.39 0.57 0.73
11 A' 1363 1355 17.24 0.50 0.44 0.61
12 A' 1353 1345 9.36 1.79 0.61 0.76
13 A' 1189 1183 349.80 1.73 0.60 0.75
14 A' 1097 1091 7.45 6.76 0.11 0.19
15 A' 1003 998 166.81 2.43 0.65 0.79
16 A' 977 972 1.84 1.69 0.23 0.37
17 A' 900 895 17.34 1.67 0.10 0.18
18 A' 815 811 10.03 7.94 0.22 0.37
19 A' 611 608 2.88 9.30 0.21 0.35
20 A' 418 416 0.91 0.50 0.59 0.74
21 A' 354 352 7.34 4.52 0.23 0.37
22 A' 186 185 5.36 0.45 0.52 0.69
23 A" 3032 3015 38.80 15.84 0.75 0.86
24 A" 3025 3008 5.93 57.16 0.75 0.86
25 A" 3001 2984 3.36 88.00 0.75 0.86
26 A" 1454 1446 6.29 5.40 0.75 0.86
27 A" 1445 1437 7.75 4.40 0.75 0.86
28 A" 1256 1249 0.74 3.95 0.75 0.86
29 A" 1142 1135 3.03 0.71 0.75 0.86
30 A" 1033 1027 4.31 0.06 0.75 0.86
31 A" 793 788 0.69 0.25 0.75 0.86
32 A" 587 584 3.98 0.32 0.75 0.86
33 A" 253 251 0.94 0.02 0.75 0.86
34 A" 148 148 4.61 0.04 0.75 0.86
35 A" 59 59 0.41 0.23 0.75 0.86
36 A" 20 19 0.25 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 24991.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 24854.5 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 BLYP/6-311+G(3df,2p)
ABC
0.27671 0.06799 0.05631

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.333 0.030 0.000
C2 -0.922 -0.530 0.000
O3 0.000 0.480 0.000
O4 -0.630 -1.711 0.000
C5 1.409 0.072 0.000
C6 2.256 1.337 0.000
H7 -3.051 -0.792 0.000
H8 -2.490 0.661 0.883
H9 -2.490 0.661 -0.883
H10 1.590 -0.548 0.886
H11 1.590 -0.548 -0.886
H12 3.319 1.066 0.000
H13 2.058 1.947 -0.889
H14 2.058 1.947 0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51772.37582.43523.74184.77121.09171.09641.09644.06274.06275.74624.87284.8728
C21.51771.36771.21652.40743.68592.14462.15782.15782.66362.66364.53183.97583.9758
O32.37581.36772.27981.46672.41323.30542.64822.64822.09032.09033.37062.67912.6791
O42.43521.21652.27982.70854.19752.58903.14093.14092.65802.65804.82804.62554.6255
C53.74182.40741.46672.70851.52244.54244.04074.04071.09651.09652.15372.17412.1741
C64.77123.68592.41324.19751.52245.71794.87464.87462.18682.18681.09721.09611.0961
H71.09172.14463.30542.58904.54245.71791.79051.79054.73064.73066.63555.86465.8646
H81.09642.15782.64823.14094.04074.87461.79051.76564.25534.60825.89005.04774.7265
H91.09642.15782.64823.14094.04074.87461.79051.76564.60824.25535.89004.72655.0477
H104.06272.66362.09032.65801.09652.18684.73064.25534.60821.77202.52623.09752.5384
H114.06272.66362.09032.65801.09652.18684.73064.60824.25531.77202.52622.53843.0975
H125.74624.53183.37064.82802.15371.09726.63555.89005.89002.52622.52621.77661.7766
H134.87283.97582.67914.62552.17411.09615.86465.04774.72653.09752.53841.77661.7783
H144.87283.97582.67914.62552.17411.09615.86464.72655.04772.53843.09751.77661.7783

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 110.742 C1 C2 O4 125.546
C2 C1 H7 109.463 C2 C1 H8 110.225
C2 C1 H9 110.225 C2 O3 C5 116.243
O3 C2 O4 123.712 O3 C5 C6 107.659
O3 C5 H10 108.415 O3 C5 H11 108.415
C5 C6 H12 109.524 C5 C6 H13 111.209
C5 C6 H14 111.209 C6 C5 H10 112.211
C6 C5 H11 112.211 H7 C1 H8 109.826
H7 C1 H9 109.826 H8 C1 H9 107.249
H10 C5 H11 107.809 H12 C6 H13 108.190
H12 C6 H14 108.190 H13 C6 H14 108.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.375      
2 C 0.623      
3 O -0.495      
4 O -0.643      
5 C 0.120      
6 C -0.476      
7 H 0.167      
8 H 0.161      
9 H 0.161      
10 H 0.157      
11 H 0.157      
12 H 0.149      
13 H 0.148      
14 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.398 2.033 0.000 2.072
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.216 -1.021 0.000
y -1.021 -43.839 0.000
z 0.000 0.000 -36.351
Traceless
 xyz
x 8.879 -1.021 0.000
y -1.021 -10.055 0.000
z 0.000 0.000 1.176
Polar
3z2-r22.352
x2-y212.623
xy-1.021
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.064 0.694 0.000
y 0.694 9.314 0.000
z 0.000 0.000 7.137


<r2> (average value of r2) Å2
<r2> 206.056
(<r2>)1/2 14.355