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

using model chemistry: BLYP/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 BLYP/6-31+G**
 hartrees
Energy at 0K-307.618190
Energy at 298.15K 
HF Energy-307.618190
Nuclear repulsion energy240.034844
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/6-31+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' 3093 3076 7.77 68.59 0.67 0.81
2 A' 3038 3022 27.29 83.98 0.70 0.82
3 A' 2985 2969 22.05 12.34 0.46 0.63
4 A' 2984 2968 0.26 256.33 0.02 0.03
5 A' 2972 2956 21.66 156.24 0.01 0.02
6 A' 1710 1701 261.39 8.53 0.24 0.39
7 A' 1479 1471 5.67 1.08 0.72 0.84
8 A' 1465 1457 3.47 12.61 0.73 0.84
9 A' 1440 1432 16.38 8.61 0.64 0.78
10 A' 1386 1378 6.79 3.99 0.75 0.86
11 A' 1362 1355 24.92 0.86 0.71 0.83
12 A' 1349 1342 8.12 3.23 0.75 0.86
13 A' 1198 1192 373.02 1.20 0.49 0.66
14 A' 1097 1091 7.99 6.71 0.13 0.24
15 A' 1008 1003 151.12 3.40 0.64 0.78
16 A' 977 972 2.78 1.42 0.26 0.42
17 A' 902 898 16.01 1.85 0.16 0.27
18 A' 814 810 10.70 9.06 0.27 0.43
19 A' 608 604 3.16 9.86 0.26 0.41
20 A' 416 414 0.91 0.62 0.61 0.76
21 A' 352 350 7.52 4.31 0.25 0.41
22 A' 184 183 5.69 0.36 0.54 0.70
23 A" 3051 3035 42.84 16.72 0.75 0.86
24 A" 3044 3028 6.41 62.83 0.75 0.86
25 A" 3023 3007 3.86 97.33 0.75 0.86
26 A" 1454 1447 7.44 9.36 0.75 0.86
27 A" 1445 1438 9.87 7.27 0.75 0.86
28 A" 1252 1245 0.65 8.18 0.75 0.86
29 A" 1140 1134 3.45 1.11 0.75 0.86
30 A" 1030 1025 4.57 0.01 0.75 0.86
31 A" 790 786 0.65 0.34 0.75 0.86
32 A" 582 579 3.90 0.91 0.75 0.86
33 A" 255 254 1.02 0.02 0.75 0.86
34 A" 150 149 5.11 0.03 0.75 0.86
35 A" 58 58 0.37 0.42 0.75 0.86
36 A" 22i 22i 0.40 0.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25034.6 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 24902.0 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/6-31+G**
ABC
0.27364 0.06756 0.05591

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.341 0.028 0.000
C2 -0.926 -0.531 0.000
O3 0.000 0.484 0.000
O4 -0.628 -1.722 0.000
C5 1.414 0.074 0.000
C6 2.261 1.344 0.000
H7 -3.059 -0.801 0.000
H8 -2.500 0.661 0.887
H9 -2.500 0.661 -0.887
H10 1.594 -0.549 0.891
H11 1.594 -0.549 -0.891
H12 3.329 1.073 0.000
H13 2.060 1.956 -0.894
H14 2.060 1.956 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.52142.38492.44843.75464.78601.09681.10161.10164.07554.07555.76554.88714.8871
C21.52141.37371.22752.41603.69712.15022.16482.16482.67272.67274.54713.98723.9872
O32.38491.37372.29351.47202.41873.31792.65882.65882.09802.09803.38082.68492.6849
O42.44841.22752.29352.71854.21242.59923.15743.15742.66592.66594.84464.64224.6422
C53.75462.41601.47202.71851.52734.55714.05574.05571.10151.10152.16082.18202.1820
C64.78603.69712.41874.21241.52735.73584.89064.89062.19582.19581.10251.10141.1014
H71.09682.15023.31792.59924.55715.73581.79941.79944.74414.74416.65725.88255.8825
H81.10162.16482.65883.15744.05574.89061.79941.77484.26924.62475.91085.06394.7404
H91.10162.16482.65883.15744.05574.89061.79941.77484.62474.26925.91084.74045.0639
H104.07552.67272.09802.66591.10152.19584.74414.26924.62471.78162.53663.11062.5479
H114.07552.67272.09802.66591.10152.19584.74414.62474.26921.78162.53662.54793.1106
H125.76554.54713.38084.84462.16081.10256.65725.91085.91082.53662.53661.78581.7858
H134.88713.98722.68494.64222.18201.10145.88255.06394.74043.11062.54791.78581.7871
H144.88713.98722.68494.64222.18201.10145.88254.74045.06392.54793.11061.78581.7871

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 110.820 C1 C2 O4 125.579
C2 C1 H7 109.343 C2 C1 H8 110.213
C2 C1 H9 110.213 C2 O3 C5 116.162
O3 C2 O4 123.601 O3 C5 C6 107.479
O3 C5 H10 108.363 O3 C5 H11 108.363
C5 C6 H12 109.442 C5 C6 H13 111.177
C5 C6 H14 111.177 C6 C5 H10 112.281
C6 C5 H11 112.281 H7 C1 H8 109.864
H7 C1 H9 109.864 H8 C1 H9 107.322
H10 C5 H11 107.942 H12 C6 H13 108.252
H12 C6 H14 108.252 H13 C6 H14 108.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.543      
2 C 0.514      
3 O -0.285      
4 O -0.446      
5 C 0.040      
6 C -0.583      
7 H 0.176      
8 H 0.175      
9 H 0.175      
10 H 0.155      
11 H 0.155      
12 H 0.147      
13 H 0.160      
14 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.424 2.083 0.000 2.125
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.961 -1.048 0.000
y -1.048 -44.174 0.000
z 0.000 0.000 -36.444
Traceless
 xyz
x 9.348 -1.048 0.000
y -1.048 -10.471 0.000
z 0.000 0.000 1.123
Polar
3z2-r22.246
x2-y213.213
xy-1.048
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.330 0.616 0.000
y 0.616 9.026 0.000
z 0.000 0.000 6.731


<r2> (average value of r2) Å2
<r2> 207.403
(<r2>)1/2 14.401