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

using model chemistry: PBE1PBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31G**
 hartrees
Energy at 0K-307.354390
Energy at 298.15K 
HF Energy-307.354390
Nuclear repulsion energy244.140967
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 PBE1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3216 3066 5.22 64.31 0.68 0.81
2 A' 3168 3019 19.79 73.69 0.71 0.83
3 A' 3095 2950 5.97 55.33 0.00 0.00
4 A' 3094 2949 11.66 140.07 0.06 0.11
5 A' 3084 2940 14.49 109.66 0.01 0.01
6 A' 1871 1783 239.07 3.21 0.34 0.51
7 A' 1545 1473 6.23 1.01 0.69 0.81
8 A' 1525 1453 2.25 23.16 0.75 0.86
9 A' 1497 1427 13.78 14.66 0.73 0.84
10 A' 1455 1387 7.51 5.50 0.74 0.85
11 A' 1428 1361 92.29 3.46 0.74 0.85
12 A' 1405 1339 11.60 3.28 0.62 0.77
13 A' 1315 1253 400.95 0.39 0.22 0.36
14 A' 1159 1105 21.85 6.28 0.16 0.28
15 A' 1114 1061 75.45 2.80 0.75 0.86
16 A' 1027 978 5.84 1.10 0.22 0.36
17 A' 975 929 3.89 2.11 0.20 0.33
18 A' 883 842 6.72 8.44 0.35 0.52
19 A' 650 620 7.06 7.30 0.33 0.50
20 A' 430 410 0.86 0.34 0.69 0.82
21 A' 373 356 10.29 2.49 0.32 0.48
22 A' 195 186 5.21 0.28 0.66 0.80
23 A" 3174 3025 30.95 25.62 0.75 0.86
24 A" 3169 3021 3.50 57.22 0.75 0.86
25 A" 3138 2990 9.32 81.29 0.75 0.86
26 A" 1514 1443 6.82 19.40 0.75 0.86
27 A" 1501 1431 9.56 16.27 0.75 0.86
28 A" 1311 1250 0.59 11.57 0.75 0.86
29 A" 1195 1139 4.91 1.37 0.75 0.86
30 A" 1076 1025 8.72 0.69 0.75 0.86
31 A" 816 778 1.05 0.20 0.75 0.86
32 A" 610 581 5.00 1.37 0.75 0.86
33 A" 270 258 1.02 0.01 0.75 0.86
34 A" 157 150 4.22 0.01 0.75 0.86
35 A" 65 62 0.05 0.35 0.75 0.86
36 A" 50 47 0.90 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26274.6 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 25042.4 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 PBE1PBE/6-31G**
ABC
0.28192 0.07027 0.05808

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.304 0.031 0.000
C2 -0.903 -0.516 0.000
O3 0.000 0.480 0.000
O4 -0.606 -1.686 0.000
C5 1.373 0.065 0.000
C6 2.225 1.312 0.000
H7 -3.016 -0.794 0.000
H8 -2.462 0.661 0.881
H9 -2.462 0.661 -0.881
H10 1.555 -0.558 0.882
H11 1.555 -0.558 -0.882
H12 3.285 1.039 0.000
H13 2.026 1.921 -0.887
H14 2.026 1.921 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50402.34752.41563.67704.70641.09001.09441.09444.00254.00255.67954.80694.8069
C21.50401.34461.20792.34883.62262.13152.14282.14282.61222.61224.46783.91203.9120
O32.34751.34462.24981.43412.37503.27452.62152.62152.06752.06753.33242.63942.6394
O42.41561.20792.24982.64234.12322.57063.11963.11962.59262.59264.75084.55254.5525
C53.67702.34881.43412.64231.51014.47233.97983.97981.09521.09522.14642.15822.1582
C64.70643.62262.37504.12321.51015.64834.81344.81342.17302.17301.09481.09431.0943
H71.09002.13153.27452.57064.47235.64831.78861.78864.66194.66196.56285.79495.7949
H81.09442.14282.62153.11963.97984.81341.78861.76274.19834.55365.82704.98594.6618
H91.09442.14282.62153.11963.97984.81341.78861.76274.55364.19835.82704.66184.9859
H104.00252.61222.06752.59261.09522.17304.66194.19834.55361.76402.51443.08162.5232
H114.00252.61222.06752.59261.09522.17304.66194.55364.19831.76402.51442.52323.0816
H125.67954.46783.33244.75082.14641.09486.56285.82705.82702.51442.51441.77471.7747
H134.80693.91202.63944.55252.15821.09435.79494.98594.66183.08162.52321.77471.7742
H144.80693.91202.63944.55252.15821.09435.79494.66184.98592.52323.08161.77471.7742

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 110.870 C1 C2 O4 125.585
C2 C1 H7 109.472 C2 C1 H8 110.107
C2 C1 H9 110.107 C2 O3 C5 115.367
O3 C2 O4 123.545 O3 C5 C6 107.514
O3 C5 H10 108.922 O3 C5 H11 108.922
C5 C6 H12 109.948 C5 C6 H13 110.920
C5 C6 H14 110.920 C6 C5 H10 112.062
C6 C5 H11 112.062 H7 C1 H8 109.924
H7 C1 H9 109.924 H8 C1 H9 107.283
H10 C5 H11 107.295 H12 C6 H13 108.327
H12 C6 H14 108.327 H13 C6 H14 108.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.609      
2 C 0.610      
3 O -0.454      
4 O -0.472      
5 C -0.093      
6 C -0.542      
7 H 0.211      
8 H 0.209      
9 H 0.209      
10 H 0.187      
11 H 0.187      
12 H 0.181      
13 H 0.188      
14 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.280 1.944 0.000 1.964
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.103 -1.015 0.000
y -1.015 -41.930 0.000
z 0.000 0.000 -35.062
Traceless
 xyz
x 8.393 -1.015 0.000
y -1.015 -9.348 0.000
z 0.000 0.000 0.955
Polar
3z2-r21.910
x2-y211.827
xy-1.015
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.401 0.456 0.000
y 0.456 7.265 0.000
z 0.000 0.000 5.602


<r2> (average value of r2) Å2
<r2> 199.863
(<r2>)1/2 14.137