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

using model chemistry: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-303.572410
Energy at 298.15K 
HF Energy-303.572410
Nuclear repulsion energy233.898455
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 BLYP/STO-3G
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' 3385 3132 0.34 35.62 0.74 0.85
2 A' 3376 3123 1.17 41.38 0.72 0.84
3 A' 3215 2974 1.22 48.70 0.01 0.02
4 A' 3205 2966 0.35 51.81 0.00 0.00
5 A' 3168 2931 6.15 40.70 0.08 0.15
6 A' 1781 1648 60.74 1.10 0.30 0.46
7 A' 1641 1518 3.16 9.11 0.74 0.85
8 A' 1616 1495 8.25 17.34 0.75 0.86
9 A' 1603 1483 5.18 15.96 0.74 0.85
10 A' 1520 1406 0.38 8.59 0.61 0.76
11 A' 1481 1370 1.60 7.02 0.63 0.77
12 A' 1405 1300 20.40 2.61 0.69 0.82
13 A' 1207 1117 196.40 0.54 0.74 0.85
14 A' 1169 1081 6.19 5.45 0.27 0.42
15 A' 1072 992 19.57 4.34 0.75 0.86
16 A' 1012 936 31.08 1.55 0.32 0.48
17 A' 924 855 3.49 3.37 0.64 0.78
18 A' 847 783 3.82 7.10 0.16 0.28
19 A' 575 532 4.20 9.32 0.35 0.52
20 A' 389 360 0.20 0.40 0.66 0.80
21 A' 334 309 3.79 3.67 0.39 0.56
22 A' 178 165 2.29 0.18 0.52 0.68
23 A" 3382 3129 1.94 23.54 0.75 0.86
24 A" 3363 3111 0.26 32.46 0.75 0.86
25 A" 3269 3024 7.07 29.00 0.75 0.86
26 A" 1629 1507 3.24 18.75 0.75 0.86
27 A" 1615 1494 4.19 17.69 0.75 0.86
28 A" 1306 1208 0.17 12.67 0.75 0.86
29 A" 1164 1077 4.08 4.21 0.75 0.86
30 A" 1061 981 5.38 1.05 0.75 0.86
31 A" 833 770 1.64 0.03 0.75 0.86
32 A" 513 475 1.18 0.84 0.75 0.86
33 A" 218 201 0.93 0.01 0.75 0.86
34 A" 145 134 2.01 0.01 0.75 0.86
35 A" 22 20 0.03 0.50 0.75 0.86
36 A" 7 7 0.11 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26812.0 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 24806.5 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 BLYP/STO-3G
ABC
0.25486 0.06516 0.05351

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.410 0.127 0.000
C2 -0.966 -0.511 0.000
O3 0.000 0.580 0.000
O4 -0.657 -1.738 0.000
C5 1.402 0.011 0.000
C6 2.391 1.227 0.000
H7 -3.168 -0.681 0.000
H8 -2.552 0.761 0.900
H9 -2.552 0.761 -0.900
H10 1.557 -0.630 0.905
H11 1.557 -0.630 -0.905
H12 3.436 0.857 0.000
H13 2.235 1.853 -0.901
H14 2.235 1.853 0.901

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.57962.45232.56043.81444.92541.10781.10961.10964.13904.13905.89195.03695.0369
C21.57961.45701.26532.42503.77982.20852.22372.22372.68252.68254.60974.08024.0802
O32.45231.45702.40951.51322.47693.40922.71192.71192.16962.16963.44762.72582.7258
O42.56041.26532.40952.70244.25222.72423.26313.26312.63572.63574.84664.69864.6986
C53.81442.42501.51322.70241.56654.62214.12414.12411.12011.12012.20262.21302.2130
C64.92543.77982.47694.25221.56655.87675.04565.04562.22782.22781.10911.10831.1083
H71.10782.20853.40922.72424.62215.87671.80781.80784.81064.81066.78066.03526.0352
H81.10962.22372.71193.26314.12415.04561.80781.79994.33804.69846.05635.23004.9101
H91.10962.22372.71193.26314.12415.04561.80781.79994.69844.33806.05634.91015.2300
H104.13902.68252.16962.63571.12012.22784.81064.33804.69841.80952.56183.14472.5747
H114.13902.68252.16962.63571.12012.22784.81064.69844.33801.80952.56182.57473.1447
H125.89194.60973.44764.84662.20261.10916.78066.05636.05632.56182.56181.80211.8021
H135.03694.08022.72584.69862.21301.10836.03525.23004.91013.14472.57471.80211.8018
H145.03694.08022.72584.69862.21301.10836.03524.91015.23002.57473.14471.80211.8018

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 107.651 C1 C2 O4 127.974
C2 C1 H7 109.275 C2 C1 H8 110.343
C2 C1 H9 110.343 C2 O3 C5 109.445
O3 C2 O4 124.376 O3 C5 C6 107.066
O3 C5 H10 110.066 O3 C5 H11 110.066
C5 C6 H12 109.634 C5 C6 H13 110.482
C5 C6 H14 110.482 C6 C5 H10 110.951
C6 C5 H11 110.951 H7 C1 H8 109.232
H7 C1 H9 109.232 H8 C1 H9 108.391
H10 C5 H11 107.756 H12 C6 H13 108.727
H12 C6 H14 108.727 H13 C6 H14 108.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.232      
2 C 0.176      
3 O -0.147      
4 O -0.198      
5 C -0.048      
6 C -0.215      
7 H 0.087      
8 H 0.087      
9 H 0.087      
10 H 0.081      
11 H 0.081      
12 H 0.080      
13 H 0.081      
14 H 0.081      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.496 1.045 0.000 1.156
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.662 -0.738 0.000
y -0.738 -37.525 0.000
z 0.000 0.000 -32.898
Traceless
 xyz
x 5.550 -0.738 0.000
y -0.738 -6.245 0.000
z 0.000 0.000 0.695
Polar
3z2-r21.390
x2-y27.863
xy-0.738
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.915 0.476 0.000
y 0.476 4.415 0.000
z 0.000 0.000 2.822


<r2> (average value of r2) Å2
<r2> 213.007
(<r2>)1/2 14.595