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

using model chemistry: B2PLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-311G*
 hartrees
Energy at 0K-307.468829
Energy at 298.15K 
HF Energy-307.158973
Nuclear repulsion energy243.545162
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 B2PLYP/6-311G*
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' 3193 3193 9.91 65.39 0.69 0.82
2 A' 3143 3143 30.34 74.20 0.71 0.83
3 A' 3089 3089 18.46 85.54 0.11 0.19
4 A' 3082 3082 2.85 132.87 0.01 0.02
5 A' 3070 3070 19.07 116.73 0.01 0.02
6 A' 1807 1807 229.37 3.50 0.40 0.57
7 A' 1554 1554 6.26 1.54 0.74 0.85
8 A' 1532 1532 3.47 17.28 0.75 0.85
9 A' 1507 1507 16.04 10.86 0.70 0.82
10 A' 1456 1456 7.12 3.48 0.66 0.79
11 A' 1431 1431 50.47 0.95 0.74 0.85
12 A' 1416 1416 17.05 2.23 0.75 0.86
13 A' 1281 1281 411.94 0.46 0.36 0.53
14 A' 1156 1156 13.77 6.70 0.15 0.27
15 A' 1087 1087 119.01 2.89 0.73 0.85
16 A' 1027 1027 8.32 1.77 0.26 0.41
17 A' 956 956 8.61 1.98 0.18 0.31
18 A' 872 872 11.28 8.63 0.31 0.47
19 A' 644 644 6.50 8.36 0.33 0.50
20 A' 432 432 0.69 0.36 0.66 0.80
21 A' 372 372 9.37 3.16 0.32 0.48
22 A' 196 196 4.73 0.33 0.65 0.79
23 A" 3156 3156 49.54 12.63 0.75 0.86
24 A" 3149 3149 7.95 58.31 0.75 0.86
25 A" 3128 3128 3.94 98.90 0.75 0.86
26 A" 1520 1520 8.04 12.28 0.75 0.86
27 A" 1509 1509 10.07 11.21 0.75 0.86
28 A" 1322 1322 0.93 8.94 0.75 0.86
29 A" 1203 1203 4.09 0.94 0.75 0.86
30 A" 1082 1082 5.57 0.21 0.75 0.86
31 A" 823 823 0.47 0.19 0.75 0.86
32 A" 609 609 5.34 1.15 0.75 0.86
33 A" 270 270 1.07 0.03 0.75 0.86
34 A" 154 154 4.55 0.02 0.75 0.86
35 A" 69 69 0.19 0.28 0.75 0.86
36 A" 44 44 0.72 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26170.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26170.5 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 B2PLYP/6-311G*
ABC
0.28057 0.06981 0.05770

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.310 0.028 0.000
C2 -0.907 -0.523 0.000
O3 0.000 0.480 0.000
O4 -0.609 -1.693 0.000
C5 1.384 0.067 0.000
C6 2.226 1.324 0.000
H7 -3.022 -0.793 0.000
H8 -2.465 0.655 0.879
H9 -2.465 0.655 -0.879
H10 1.567 -0.551 0.881
H11 1.567 -0.551 -0.881
H12 3.286 1.064 0.000
H13 2.020 1.929 -0.884
H14 2.020 1.929 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50732.35352.42013.69444.71711.08671.09091.09094.01714.01715.69104.81104.8110
C21.50731.35201.20752.36593.63672.13192.14232.14232.62572.62574.48333.91953.9195
O32.35351.35202.25651.44462.38053.27872.62322.62322.07182.07183.33772.63902.6390
O42.42011.20752.25652.65884.13972.57543.12003.12002.60972.60974.77184.56204.5620
C53.69442.36591.44462.65881.51294.48913.99233.99231.09121.09122.14732.15722.1572
C64.71713.63672.38054.13971.51295.65834.81934.81932.17422.17421.09191.09081.0908
H71.08672.13193.27872.57544.48915.65831.78311.78314.67814.67816.57545.79765.7976
H81.09092.14232.62323.12003.99234.81931.78311.75804.20844.56155.83254.98534.6630
H91.09092.14232.62323.12003.99234.81931.78311.75804.56154.20845.83254.66304.9853
H104.01712.62572.07182.60971.09122.17424.67814.20844.56151.76132.51813.07762.5211
H114.01712.62572.07182.60971.09122.17424.67814.56154.20841.76132.51812.52113.0776
H125.69104.48333.33774.77182.14731.09196.57545.83255.83252.51812.51811.76981.7698
H134.81103.91952.63904.56202.15721.09085.79764.98534.66303.07762.52111.76981.7689
H144.81103.91952.63904.56202.15721.09085.79764.66304.98532.52113.07761.76981.7689

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 110.679 C1 C2 O4 125.750
C2 C1 H7 109.469 C2 C1 H8 110.049
C2 C1 H9 110.049 C2 O3 C5 115.518
O3 C2 O4 123.572 O3 C5 C6 107.182
O3 C5 H10 108.776 O3 C5 H11 108.776
C5 C6 H12 109.997 C5 C6 H13 110.852
C5 C6 H14 110.852 C6 C5 H10 112.202
C6 C5 H11 112.202 H7 C1 H8 109.941
H7 C1 H9 109.941 H8 C1 H9 107.368
H10 C5 H11 107.618 H12 C6 H13 108.352
H12 C6 H14 108.352 H13 C6 H14 108.355
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.694      
2 C 0.404      
3 O -0.315      
4 O -0.346      
5 C -0.222      
6 C -0.640      
7 H 0.242      
8 H 0.240      
9 H 0.240      
10 H 0.218      
11 H 0.218      
12 H 0.216      
13 H 0.220      
14 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.312 1.836 0.000 1.862
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.184 -1.045 -0.006
y -1.045 -43.042 -0.014
z -0.006 -0.014 -35.816
Traceless
 xyz
x 8.245 -1.045 -0.006
y -1.045 -9.542 -0.014
z -0.006 -0.014 1.297
Polar
3z2-r22.593
x2-y211.858
xy-1.045
xz-0.006
yz-0.014


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.861 0.484 0.000
y 0.484 7.680 0.002
z 0.000 0.002 5.919


<r2> (average value of r2) Å2
<r2> 201.492
(<r2>)1/2 14.195