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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-306.004014
Energy at 298.15K 
HF Energy-306.004014
Nuclear repulsion energy246.110286
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/Def2TZVPP
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' 3294 2986 13.46 60.35 0.64 0.78
2 A' 3235 2932 49.00 61.41 0.59 0.74
3 A' 3208 2907 11.57 113.12 0.12 0.21
4 A' 3190 2891 4.58 147.43 0.01 0.01
5 A' 3170 2874 22.49 138.85 0.01 0.02
6 A' 1971 1786 365.33 4.39 0.55 0.71
7 A' 1649 1495 5.04 2.24 0.75 0.85
8 A' 1616 1464 3.16 8.38 0.73 0.85
9 A' 1586 1438 14.85 6.09 0.73 0.85
10 A' 1567 1420 6.00 1.91 0.23 0.37
11 A' 1538 1394 96.51 0.62 0.73 0.85
12 A' 1519 1377 10.28 0.38 0.55 0.71
13 A' 1410 1278 518.15 0.81 0.75 0.85
14 A' 1236 1121 37.39 7.60 0.14 0.24
15 A' 1180 1070 93.50 2.52 0.49 0.66
16 A' 1096 994 3.02 3.10 0.20 0.33
17 A' 1019 924 3.74 2.13 0.38 0.55
18 A' 943 855 11.93 7.48 0.26 0.42
19 A' 689 625 11.26 7.18 0.25 0.40
20 A' 461 418 1.35 0.20 0.68 0.81
21 A' 397 360 10.55 2.23 0.24 0.38
22 A' 206 186 6.38 0.29 0.64 0.78
23 A" 3259 2954 60.58 4.75 0.75 0.86
24 A" 3249 2945 10.55 52.37 0.75 0.86
25 A" 3228 2926 3.77 94.01 0.75 0.86
26 A" 1602 1452 5.80 6.75 0.75 0.86
27 A" 1597 1447 6.48 6.43 0.75 0.86
28 A" 1415 1282 2.01 5.25 0.75 0.86
29 A" 1288 1168 4.65 0.23 0.75 0.86
30 A" 1174 1064 8.29 0.27 0.75 0.86
31 A" 874 792 0.07 0.12 0.75 0.86
32 A" 671 608 10.85 0.90 0.75 0.86
33 A" 284 258 0.98 0.03 0.75 0.86
34 A" 156 142 5.24 0.01 0.75 0.86
35 A" 91 83 0.01 0.12 0.75 0.86
36 A" 75 68 0.87 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27571.6 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 24990.9 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/Def2TZVPP
ABC
0.28883 0.07061 0.05856

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.293 -0.015 0.000
C2 -0.884 -0.539 0.000
O3 0.000 0.442 0.000
O4 -0.590 -1.684 0.000
C5 1.378 0.095 0.000
C6 2.178 1.376 0.000
H7 -2.986 -0.841 0.000
H8 -2.450 0.604 0.874
H9 -2.450 0.604 -0.874
H10 1.589 -0.506 0.873
H11 1.589 -0.506 -0.873
H12 3.237 1.145 0.000
H13 1.958 1.969 -0.878
H14 1.958 1.969 0.878

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50262.33792.38443.67234.68261.07781.08221.08224.00934.00935.64994.77254.7725
C21.50261.32061.18292.34923.61192.12282.12592.12592.62362.62364.45163.89103.8910
O32.33791.32062.20701.42102.37013.24952.60612.60612.04632.04633.31212.63382.6338
O42.38441.18292.20702.65314.12692.53963.07533.07532.62732.62734.75914.54024.5402
C53.67232.34921.42102.65311.51074.46263.95913.95911.08071.08072.13482.14982.1498
C64.68263.61192.37014.12691.51075.61964.77304.77302.15642.15641.08351.08261.0826
H71.07782.12283.24952.53964.46265.61961.77111.77114.66974.66976.53145.75375.7537
H81.08222.12592.60613.07533.95914.77301.77111.74774.18894.53875.77884.93594.6145
H91.08222.12592.60613.07533.95914.77301.77111.74774.53874.18895.77884.61454.9359
H104.00932.62362.04632.62731.08072.15644.66974.18894.53871.74662.48993.05442.5023
H114.00932.62362.04632.62731.08072.15644.66974.53874.18891.74662.48992.50233.0544
H125.64994.45163.31214.75912.13481.08356.53145.77885.77882.48992.48991.75721.7572
H134.77253.89102.63384.54022.14981.08265.75374.93594.61453.05442.50231.75721.7566
H144.77253.89102.63384.54022.14981.08265.75374.61454.93592.50233.05441.75721.7566

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 111.648 C1 C2 O4 124.789
C2 C1 H7 109.613 C2 C1 H8 109.593
C2 C1 H9 109.593 C2 O3 C5 117.887
O3 C2 O4 123.564 O3 C5 C6 107.846
O3 C5 H10 109.004 O3 C5 H11 109.004
C5 C6 H12 109.659 C5 C6 H13 110.908
C5 C6 H14 110.908 C6 C5 H10 111.560
C6 C5 H11 111.560 H7 C1 H8 110.161
H7 C1 H9 110.161 H8 C1 H9 107.693
H10 C5 H11 107.817 H12 C6 H13 108.429
H12 C6 H14 108.429 H13 C6 H14 108.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.201      
2 C 0.512      
3 O -0.375      
4 O -0.464      
5 C 0.143      
6 C -0.152      
7 H 0.101      
8 H 0.078      
9 H 0.078      
10 H 0.056      
11 H 0.056      
12 H 0.052      
13 H 0.058      
14 H 0.058      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.215 2.212 0.000 2.222
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.428 -1.020 0.000
y -1.020 -43.608 0.000
z 0.000 0.000 -35.487
Traceless
 xyz
x 9.119 -1.020 0.000
y -1.020 -10.650 0.000
z 0.000 0.000 1.531
Polar
3z2-r23.061
x2-y213.180
xy-1.020
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.667 0.421 0.000
y 0.421 7.815 0.000
z 0.000 0.000 6.283


<r2> (average value of r2) Å2
<r2> 198.826
(<r2>)1/2 14.101