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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-307.649755
Energy at 298.15K 
HF Energy-307.649755
Nuclear repulsion energy244.953023
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 B1B95/6-311G**
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' 3199 3072 6.79 64.91 0.69 0.82
2 A' 3149 3023 23.89 76.85 0.70 0.83
3 A' 3082 2959 3.22 110.14 0.00 0.00
4 A' 3078 2955 15.54 122.14 0.06 0.12
5 A' 3068 2946 16.53 131.94 0.01 0.01
6 A' 1853 1779 262.46 3.14 0.38 0.55
7 A' 1525 1464 6.28 1.83 0.75 0.86
8 A' 1501 1441 3.05 15.24 0.75 0.86
9 A' 1471 1412 14.33 9.93 0.69 0.82
10 A' 1436 1379 8.35 2.94 0.70 0.82
11 A' 1404 1348 85.03 1.42 0.75 0.86
12 A' 1386 1330 30.30 1.92 0.74 0.85
13 A' 1292 1240 403.62 0.47 0.36 0.53
14 A' 1147 1101 16.19 6.45 0.15 0.26
15 A' 1099 1055 95.85 2.55 0.75 0.86
16 A' 1014 973 9.12 1.22 0.22 0.36
17 A' 969 931 5.25 2.16 0.15 0.26
18 A' 876 841 8.25 6.87 0.34 0.50
19 A' 649 623 7.27 7.55 0.33 0.50
20 A' 426 409 0.80 0.26 0.63 0.77
21 A' 373 358 10.41 2.72 0.31 0.47
22 A' 196 189 4.78 0.36 0.69 0.81
23 A" 3154 3029 40.28 36.05 0.75 0.86
24 A" 3154 3028 1.33 46.08 0.75 0.86
25 A" 3117 2993 8.62 88.02 0.75 0.86
26 A" 1486 1426 7.75 11.16 0.75 0.86
27 A" 1475 1416 9.90 9.95 0.75 0.86
28 A" 1305 1253 1.43 7.87 0.75 0.86
29 A" 1181 1134 4.46 0.59 0.75 0.86
30 A" 1063 1021 6.95 0.12 0.75 0.86
31 A" 811 779 0.93 0.17 0.75 0.86
32 A" 609 585 4.87 1.00 0.75 0.86
33 A" 266 256 1.11 0.03 0.75 0.86
34 A" 156 150 4.50 0.03 0.75 0.86
35 A" 70 67 0.25 0.22 0.75 0.86
36 A" 39 37 0.69 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26039.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 25000.1 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 B1B95/6-311G**
ABC
0.28476 0.07061 0.05842

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.300 0.036 0.000
C2 -0.905 -0.511 0.000
O3 0.000 0.480 0.000
O4 -0.608 -1.674 0.000
C5 1.372 0.059 0.000
C6 2.225 1.299 0.000
H7 -3.010 -0.784 0.000
H8 -2.451 0.663 0.878
H9 -2.451 0.663 -0.878
H10 1.548 -0.563 0.879
H11 1.548 -0.563 -0.879
H12 3.280 1.025 0.000
H13 2.027 1.905 -0.883
H14 2.027 1.905 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.49852.34242.40563.67174.69781.08511.08951.08953.99203.99205.66714.79574.7957
C21.49851.34161.20022.34683.61552.12282.13092.13092.60592.60594.45823.90083.9008
O32.34241.34162.23751.43452.37103.26472.61032.61032.06252.06253.32522.63112.6311
O42.40561.20022.23752.63094.10652.56153.10333.10332.57962.57964.73324.53154.5315
C53.67172.34681.43452.63091.50524.46213.96873.96871.09071.09072.13932.14912.1491
C64.69783.61552.37104.10651.50525.63434.80014.80012.16722.16721.09021.08951.0895
H71.08512.12283.26472.56154.46215.63431.78281.78284.64714.64716.54545.77835.7783
H81.08952.13092.61033.10333.96874.80011.78281.75604.18284.53675.80964.97024.6476
H91.08952.13092.61033.10333.96874.80011.78281.75604.53674.18285.80964.64764.9702
H103.99202.60592.06252.57961.09072.16724.64714.18284.53671.75742.50903.07012.5140
H113.99202.60592.06252.57961.09072.16724.64714.53674.18281.75742.50902.51403.0701
H125.66714.45823.32524.73322.13931.09026.54545.80965.80962.50902.50901.76751.7675
H134.79573.90082.63114.53152.14911.08955.77834.97024.64763.07012.51401.76751.7670
H144.79573.90082.63114.53152.14911.08955.77834.64764.97022.51403.07011.76751.7670

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 111.005 C1 C2 O4 125.738
C2 C1 H7 109.464 C2 C1 H8 109.841
C2 C1 H9 109.841 C2 O3 C5 115.377
O3 C2 O4 123.257 O3 C5 C6 107.490
O3 C5 H10 108.754 O3 C5 H11 108.754
C5 C6 H12 109.997 C5 C6 H13 110.826
C5 C6 H14 110.826 C6 C5 H10 112.210
C6 C5 H11 112.210 H7 C1 H8 110.139
H7 C1 H9 110.139 H8 C1 H9 107.393
H10 C5 H11 107.337 H12 C6 H13 108.372
H12 C6 H14 108.372 H13 C6 H14 108.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.341      
2 C 0.324      
3 O -0.325      
4 O -0.353      
5 C -0.072      
6 C -0.352      
7 H 0.152      
8 H 0.149      
9 H 0.149      
10 H 0.141      
11 H 0.141      
12 H 0.125      
13 H 0.131      
14 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.259 1.891 0.000 1.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.442 -1.062 0.000
y -1.062 -42.439 0.000
z 0.000 0.000 -35.352
Traceless
 xyz
x 8.454 -1.062 0.000
y -1.062 -9.542 0.000
z 0.000 0.000 1.089
Polar
3z2-r22.178
x2-y211.997
xy-1.062
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.000 0.478 0.000
y 0.478 7.710 0.000
z 0.000 0.000 6.002


<r2> (average value of r2) Å2
<r2> 199.039
(<r2>)1/2 14.108