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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-307.700797
Energy at 298.15K 
HF Energy-307.700797
Nuclear repulsion energy244.516972
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 mPW1PW91/6-311G*
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' 3197 3051 9.30 64.13 0.69 0.82
2 A' 3145 3002 29.11 75.25 0.70 0.82
3 A' 3085 2944 20.07 67.59 0.12 0.21
4 A' 3082 2941 1.31 151.63 0.01 0.02
5 A' 3068 2928 19.49 118.96 0.01 0.01
6 A' 1852 1767 264.62 3.16 0.36 0.53
7 A' 1541 1471 7.56 1.37 0.75 0.86
8 A' 1519 1449 3.14 16.88 0.75 0.86
9 A' 1492 1424 16.36 10.48 0.69 0.82
10 A' 1448 1382 6.45 3.41 0.69 0.82
11 A' 1419 1354 78.93 1.48 0.75 0.86
12 A' 1402 1338 22.43 2.25 0.75 0.85
13 A' 1295 1236 413.91 0.44 0.32 0.48
14 A' 1156 1103 18.03 6.16 0.16 0.27
15 A' 1101 1051 98.45 2.60 0.75 0.86
16 A' 1023 976 8.47 1.29 0.23 0.38
17 A' 970 926 5.61 2.05 0.16 0.28
18 A' 880 840 8.47 7.02 0.34 0.51
19 A' 650 621 6.72 7.54 0.34 0.50
20 A' 431 412 0.80 0.31 0.65 0.79
21 A' 373 356 9.97 2.79 0.32 0.48
22 A' 195 186 5.03 0.34 0.67 0.80
23 A" 3153 3010 48.00 17.34 0.75 0.86
24 A" 3150 3006 6.33 56.47 0.75 0.86
25 A" 3122 2980 5.52 95.46 0.75 0.86
26 A" 1507 1438 8.82 12.18 0.75 0.86
27 A" 1495 1427 10.91 10.71 0.75 0.86
28 A" 1319 1259 0.99 8.92 0.75 0.86
29 A" 1193 1139 4.46 0.68 0.75 0.86
30 A" 1075 1026 7.45 0.20 0.75 0.86
31 A" 816 779 0.84 0.20 0.75 0.86
32 A" 614 586 5.04 1.12 0.75 0.86
33 A" 270 257 1.06 0.04 0.75 0.86
34 A" 156 149 4.53 0.02 0.75 0.86
35 A" 65 62 0.25 0.26 0.75 0.86
36 A" 36 34 0.71 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26145.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 24953.4 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 mPW1PW91/6-311G*
ABC
0.28348 0.07031 0.05816

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.301 0.028 0.000
C2 -0.903 -0.520 0.000
O3 0.000 0.475 0.000
O4 -0.607 -1.684 0.000
C5 1.376 0.068 0.000
C6 2.220 1.317 0.000
H7 -3.014 -0.793 0.000
H8 -2.459 0.656 0.878
H9 -2.459 0.656 -0.878
H10 1.560 -0.553 0.880
H11 1.560 -0.553 -0.880
H12 3.279 1.054 0.000
H13 2.019 1.924 -0.884
H14 2.019 1.924 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50142.34422.40793.67754.70111.08671.09121.09124.00224.00225.67424.80034.8003
C21.50141.34321.20112.35353.62252.12852.13852.13852.61532.61534.46863.91043.9104
O32.34421.34322.24221.43512.37403.26962.61722.61722.06462.06463.33022.63792.6379
O42.40791.20112.24222.64584.12222.56643.11013.11012.59772.59774.75384.54904.5490
C53.67752.35351.43512.64581.50714.47353.97793.97791.09191.09192.14362.15422.1542
C64.70113.62252.37404.12221.50715.64274.80594.80592.16872.16871.09191.09121.0912
H71.08672.12853.26962.56644.47355.64271.78261.78264.66374.66376.55875.78735.7873
H81.09122.13852.61723.11013.97794.80591.78261.75644.19634.54965.81884.97654.6540
H91.09122.13852.61723.11013.97794.80591.78261.75644.54964.19635.81884.65404.9765
H104.00222.61532.06462.59771.09192.16874.66374.19634.54961.75922.51223.07492.5189
H114.00222.61532.06462.59771.09192.16874.66374.54964.19631.75922.51222.51893.0749
H125.67424.46863.33024.75382.14361.09196.55875.81885.81882.51222.51221.76851.7685
H134.80033.91042.63794.54902.15421.09125.78734.97654.65403.07492.51891.76851.7681
H144.80033.91042.63794.54902.15421.09125.78734.65404.97652.51893.07491.76851.7681

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 125.632
C2 C1 H7 109.612 C2 C1 H8 110.140
C2 C1 H9 110.140 C2 O3 C5 115.760
O3 C2 O4 123.498 O3 C5 C6 107.557
O3 C5 H10 108.814 O3 C5 H11 108.814
C5 C6 H12 110.103 C5 C6 H13 110.997
C5 C6 H14 110.997 C6 C5 H10 112.126
C6 C5 H11 112.126 H7 C1 H8 109.865
H7 C1 H9 109.865 H8 C1 H9 107.188
H10 C5 H11 107.328 H12 C6 H13 108.211
H12 C6 H14 108.211 H13 C6 H14 108.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.727      
2 C 0.421      
3 O -0.311      
4 O -0.361      
5 C -0.252      
6 C -0.672      
7 H 0.254      
8 H 0.250      
9 H 0.250      
10 H 0.230      
11 H 0.230      
12 H 0.227      
13 H 0.231      
14 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.283 1.918 0.000 1.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.530 -1.056 0.000
y -1.056 -42.602 0.000
z 0.000 0.000 -35.364
Traceless
 xyz
x 8.452 -1.056 0.000
y -1.056 -9.655 0.000
z 0.000 0.000 1.202
Polar
3z2-r22.404
x2-y212.071
xy-1.056
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.816 0.464 0.000
y 0.464 7.634 0.000
z 0.000 0.000 5.908


<r2> (average value of r2) Å2
<r2> 199.876
(<r2>)1/2 14.138