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

using model chemistry: B2PLYP/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-307.577662
Energy at 298.15K 
HF Energy-307.203218
Nuclear repulsion energy243.858710
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/cc-pVTZ
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' 3187 3057 6.33 60.48 0.67 0.81
2 A' 3137 3009 22.52 69.75 0.70 0.82
3 A' 3078 2953 17.93 31.59 0.17 0.29
4 A' 3076 2951 0.12 211.14 0.01 0.02
5 A' 3063 2939 15.72 151.03 0.01 0.01
6 A' 1792 1719 231.40 4.23 0.37 0.54
7 A' 1535 1473 5.38 1.39 0.75 0.86
8 A' 1513 1452 2.96 11.03 0.75 0.86
9 A' 1486 1425 14.43 7.98 0.68 0.81
10 A' 1438 1380 5.53 1.60 0.71 0.83
11 A' 1415 1358 39.37 0.26 0.75 0.86
12 A' 1400 1343 20.55 1.17 0.66 0.79
13 A' 1275 1223 406.93 0.74 0.50 0.66
14 A' 1146 1099 10.18 7.16 0.12 0.21
15 A' 1081 1037 118.48 2.31 0.75 0.86
16 A' 1020 979 7.21 1.81 0.19 0.33
17 A' 953 914 7.63 1.85 0.14 0.25
18 A' 864 829 10.40 8.52 0.24 0.38
19 A' 641 615 6.04 7.84 0.28 0.43
20 A' 430 413 0.79 0.28 0.66 0.80
21 A' 370 355 8.77 3.02 0.28 0.44
22 A' 195 187 5.06 0.38 0.61 0.76
23 A" 3146 3018 36.29 15.11 0.75 0.86
24 A" 3143 3015 4.46 53.13 0.75 0.86
25 A" 3116 2990 3.86 86.32 0.75 0.86
26 A" 1501 1440 6.32 7.96 0.75 0.86
27 A" 1493 1432 7.59 6.99 0.75 0.86
28 A" 1306 1253 1.13 4.98 0.75 0.86
29 A" 1191 1143 3.57 0.62 0.75 0.86
30 A" 1075 1032 5.08 0.04 0.75 0.86
31 A" 819 785 0.58 0.13 0.75 0.86
32 A" 611 586 4.69 0.72 0.75 0.86
33 A" 265 254 1.05 0.02 0.75 0.86
34 A" 154 147 4.32 0.02 0.75 0.86
35 A" 68 65 0.27 0.19 0.75 0.86
36 A" 44 42 0.49 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26011.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 24955.7 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/cc-pVTZ
ABC
0.28200 0.06990 0.05781

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.308 0.031 0.000
C2 -0.908 -0.518 0.000
O3 0.000 0.481 0.000
O4 -0.613 -1.689 0.000
C5 1.383 0.065 0.000
C6 2.229 1.316 0.000
H7 -3.018 -0.788 0.000
H8 -2.459 0.657 0.877
H9 -2.459 0.657 -0.877
H10 1.563 -0.552 0.879
H11 1.563 -0.552 -0.879
H12 3.284 1.046 0.000
H13 2.029 1.919 -0.883
H14 2.029 1.919 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50332.35132.41493.69084.71531.08391.08821.08824.01174.01175.68354.81154.8115
C21.50331.35021.20762.36433.63412.12632.13422.13422.62312.62314.47513.91753.9175
O32.35131.35022.25471.44392.38033.27352.61702.61702.06892.06893.33252.63892.6389
O42.41491.20762.25472.65694.13582.56783.11143.11142.60772.60774.76124.55824.5582
C53.69082.36431.44392.65691.51014.48223.98513.98511.08851.08852.13972.15292.1529
C64.71533.63412.38034.13581.51015.65274.81514.81512.16852.16851.08901.08821.0882
H71.08392.12633.27352.56784.48225.65271.78021.78024.66994.66996.56335.79435.7943
H81.08822.13422.61703.11143.98514.81511.78021.75484.19964.55205.82324.98344.6621
H91.08822.13422.61703.11143.98514.81511.78021.75484.55204.19965.82324.66214.9834
H104.01172.62312.06892.60771.08852.16854.66994.19964.55201.75762.50773.07012.5143
H114.01172.62312.06892.60771.08852.16854.66994.55204.19961.75762.50772.51433.0701
H125.68354.47513.33254.76122.13971.08906.56335.82325.82322.50772.50771.76591.7659
H134.81153.91752.63894.55822.15291.08825.79434.98344.66213.07012.51431.76591.7657
H144.81153.91752.63894.55822.15291.08825.79434.66214.98342.51433.07011.76591.7657

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 110.861 C1 C2 O4 125.593
C2 C1 H7 109.471 C2 C1 H8 109.846
C2 C1 H9 109.846 C2 O3 C5 115.552
O3 C2 O4 123.546 O3 C5 C6 107.353
O3 C5 H10 108.753 O3 C5 H11 108.753
C5 C6 H12 109.768 C5 C6 H13 110.866
C5 C6 H14 110.866 C6 C5 H10 112.110
C6 C5 H11 112.110 H7 C1 H8 110.091
H7 C1 H9 110.091 H8 C1 H9 107.473
H10 C5 H11 107.679 H12 C6 H13 108.406
H12 C6 H14 108.406 H13 C6 H14 108.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.315      
2 C 0.275      
3 O -0.235      
4 O -0.304      
5 C -0.002      
6 C -0.311      
7 H 0.128      
8 H 0.120      
9 H 0.120      
10 H 0.101      
11 H 0.101      
12 H 0.104      
13 H 0.109      
14 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.293 1.928 0.000 1.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.016 -1.056 -0.006
y -1.056 -42.954 -0.013
z -0.006 -0.013 -35.833
Traceless
 xyz
x 8.377 -1.056 -0.006
y -1.056 -9.529 -0.013
z -0.006 -0.013 1.152
Polar
3z2-r22.303
x2-y211.938
xy-1.056
xz-0.006
yz-0.013


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.684 0.564 0.000
y 0.564 8.236 0.002
z 0.000 0.002 6.455


<r2> (average value of r2) Å2
<r2> 201.060
(<r2>)1/2 14.180