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

using model chemistry: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-305.982820
Energy at 298.15K 
HF Energy-305.982820
Nuclear repulsion energy245.864880
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 HF/TZVP
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' 3301 2999 12.91 61.70 0.66 0.79
2 A' 3242 2946 49.35 61.00 0.64 0.78
3 A' 3214 2921 12.24 114.72 0.13 0.23
4 A' 3196 2904 4.41 140.78 0.01 0.02
5 A' 3176 2886 22.45 133.52 0.01 0.02
6 A' 1977 1796 381.44 4.63 0.55 0.71
7 A' 1652 1501 5.04 2.95 0.72 0.84
8 A' 1618 1470 3.28 11.66 0.72 0.84
9 A' 1590 1445 14.15 7.67 0.74 0.85
10 A' 1571 1427 2.95 2.71 0.37 0.54
11 A' 1540 1399 96.45 1.14 0.73 0.84
12 A' 1520 1381 9.33 0.82 0.69 0.81
13 A' 1410 1281 535.91 0.66 0.75 0.86
14 A' 1239 1126 36.27 8.02 0.14 0.25
15 A' 1179 1072 95.65 3.03 0.60 0.75
16 A' 1098 997 3.58 3.28 0.24 0.39
17 A' 1019 926 4.68 2.32 0.38 0.55
18 A' 946 860 13.83 7.71 0.33 0.49
19 A' 690 627 11.01 7.76 0.30 0.46
20 A' 463 421 1.26 0.28 0.69 0.82
21 A' 397 361 10.55 2.38 0.27 0.42
22 A' 206 187 6.50 0.26 0.65 0.79
23 A" 3268 2969 63.05 4.04 0.75 0.86
24 A" 3258 2961 10.56 53.96 0.75 0.86
25 A" 3239 2943 3.38 99.05 0.75 0.86
26 A" 1604 1458 5.97 9.62 0.75 0.86
27 A" 1598 1452 7.61 8.98 0.75 0.86
28 A" 1418 1288 2.01 8.94 0.75 0.86
29 A" 1290 1172 5.17 0.43 0.75 0.86
30 A" 1173 1066 8.62 0.53 0.75 0.86
31 A" 877 797 0.00 0.20 0.75 0.86
32 A" 665 604 13.39 1.51 0.75 0.86
33 A" 283 257 1.20 0.07 0.75 0.86
34 A" 156 142 6.00 0.01 0.75 0.86
35 A" 87 79 0.06 0.25 0.75 0.86
36 A" 73 66 0.90 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27616.4 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 25092.3 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 HF/TZVP
ABC
0.28807 0.07049 0.05846

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.294 -0.016 0.000
C2 -0.886 -0.541 0.000
O3 0.000 0.442 0.000
O4 -0.590 -1.687 0.000
C5 1.381 0.095 0.000
C6 2.178 1.379 0.000
H7 -2.987 -0.843 0.000
H8 -2.452 0.603 0.875
H9 -2.452 0.603 -0.875
H10 1.594 -0.504 0.875
H11 1.594 -0.504 -0.875
H12 3.238 1.150 0.000
H13 1.955 1.972 -0.879
H14 1.955 1.972 0.879

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50322.33972.38723.67694.68511.07881.08301.08304.01524.01525.65394.77354.7735
C21.50321.32301.18382.35423.61582.12322.12712.12712.62962.62964.45693.89353.8935
O32.33971.32302.20871.42362.37133.25192.60812.60812.04952.04953.31452.63402.6340
O42.38721.18382.20872.65664.13042.54213.07803.07802.63232.63234.76404.54274.5427
C53.67692.35421.42362.65661.51144.46783.96373.96371.08171.08172.13572.15062.1506
C64.68513.61582.37134.13041.51145.62324.77534.77532.15762.15761.08451.08341.0834
H71.07882.12323.25192.54214.46785.62321.77251.77254.67614.67616.53655.75565.7556
H81.08302.12712.60813.07803.96374.77531.77251.75014.19424.54455.78254.93714.6149
H91.08302.12712.60813.07803.96374.77531.77251.75014.54454.19425.78254.61494.9371
H104.01522.62962.04952.63231.08172.15764.67614.19424.54451.74912.49103.05602.5027
H114.01522.62962.04952.63231.08172.15764.67614.54454.19421.74912.49102.50273.0560
H125.65394.45693.31454.76402.13571.08456.53655.78255.78252.49102.49101.75891.7589
H134.77353.89352.63404.54272.15061.08345.75564.93714.61493.05602.50271.75891.7583
H144.77353.89352.63404.54272.15061.08345.75564.61494.93712.50273.05601.75891.7583

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 111.603 C1 C2 O4 124.933
C2 C1 H7 109.532 C2 C1 H8 109.598
C2 C1 H9 109.598 C2 O3 C5 117.948
O3 C2 O4 123.463 O3 C5 C6 107.748
O3 C5 H10 109.025 O3 C5 H11 109.025
C5 C6 H12 109.617 C5 C6 H13 110.873
C5 C6 H14 110.873 C6 C5 H10 111.545
C6 C5 H11 111.545 H7 C1 H8 110.147
H7 C1 H9 110.147 H8 C1 H9 107.796
H10 C5 H11 107.905 H12 C6 H13 108.460
H12 C6 H14 108.460 H13 C6 H14 108.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.313      
2 C 0.436      
3 O -0.279      
4 O -0.436      
5 C 0.046      
6 C -0.222      
7 H 0.123      
8 H 0.110      
9 H 0.110      
10 H 0.087      
11 H 0.087      
12 H 0.081      
13 H 0.086      
14 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.236 2.200 0.000 2.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.271 -1.015 0.000
y -1.015 -44.046 0.000
z 0.000 0.000 -35.528
Traceless
 xyz
x 9.516 -1.015 0.000
y -1.015 -11.146 0.000
z 0.000 0.000 1.631
Polar
3z2-r23.261
x2-y213.774
xy-1.015
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.158 0.345 0.000
y 0.345 7.628 0.000
z 0.000 0.000 6.084


<r2> (average value of r2) Å2
<r2> 199.206
(<r2>)1/2 14.114