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

using model chemistry: PBE1PBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-307.471029
Energy at 298.15K 
HF Energy-307.471029
Nuclear repulsion energy244.662148
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 PBE1PBE/aug-cc-pVTZ
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' 3185 3062 4.54 55.02 0.67 0.80
2 A' 3134 3013 18.23 67.15 0.68 0.81
3 A' 3070 2952 2.50 150.62 0.00 0.01
4 A' 3065 2947 14.29 127.50 0.04 0.07
5 A' 3056 2938 14.56 184.82 0.00 0.01
6 A' 1825 1755 282.02 7.91 0.22 0.37
7 A' 1513 1455 7.71 1.12 0.74 0.85
8 A' 1490 1433 2.89 6.65 0.75 0.86
9 A' 1462 1406 15.29 5.55 0.60 0.75
10 A' 1426 1371 9.04 1.21 0.74 0.85
11 A' 1399 1346 74.87 0.19 0.71 0.83
12 A' 1382 1329 23.45 0.97 0.31 0.47
13 A' 1289 1239 394.82 1.15 0.56 0.72
14 A' 1144 1100 13.06 7.45 0.11 0.20
15 A' 1098 1056 92.86 1.67 0.73 0.85
16 A' 1014 974 7.91 1.22 0.16 0.28
17 A' 967 929 4.90 2.42 0.13 0.22
18 A' 872 838 7.11 6.00 0.20 0.34
19 A' 647 622 6.26 7.19 0.20 0.34
20 A' 431 415 0.95 0.25 0.66 0.80
21 A' 372 357 9.20 3.11 0.21 0.34
22 A' 194 187 5.75 0.38 0.53 0.69
23 A" 3139 3018 9.83 59.53 0.75 0.86
24 A" 3139 3018 21.97 11.34 0.75 0.86
25 A" 3103 2983 5.50 75.63 0.75 0.86
26 A" 1478 1421 7.26 4.93 0.75 0.86
27 A" 1469 1412 8.69 3.97 0.75 0.86
28 A" 1298 1248 1.15 3.48 0.75 0.86
29 A" 1177 1132 3.68 0.32 0.75 0.86
30 A" 1064 1023 6.44 0.08 0.75 0.86
31 A" 807 776 1.05 0.21 0.75 0.86
32 A" 614 590 4.45 0.31 0.75 0.86
33 A" 263 252 0.94 0.01 0.75 0.86
34 A" 155 149 4.51 0.03 0.75 0.86
35 A" 67 64 0.36 0.19 0.75 0.86
36 A" 40 39 0.33 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25921.3 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 24923.4 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 PBE1PBE/aug-cc-pVTZ
ABC
0.28464 0.07031 0.05821

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.301 0.032 0.000
C2 -0.905 -0.513 0.000
O3 0.000 0.476 0.000
O4 -0.612 -1.679 0.000
C5 1.374 0.066 0.000
C6 2.227 1.306 0.000
H7 -3.012 -0.789 0.000
H8 -2.455 0.660 0.879
H9 -2.455 0.660 -0.879
H10 1.555 -0.555 0.880
H11 1.555 -0.555 -0.880
H12 3.282 1.027 0.000
H13 2.034 1.914 -0.885
H14 2.034 1.914 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.49872.34372.40473.67504.70351.08631.09091.09093.99853.99855.67074.80804.8080
C21.49871.34091.20282.35123.62162.12492.13322.13322.61292.61294.46093.91303.9130
O32.34371.34092.24111.43382.37603.26712.61412.61412.06292.06293.32742.64322.6432
O42.40471.20282.24112.64384.11972.55963.10523.10522.59512.59514.74204.54974.5497
C53.67502.35121.43382.64381.50524.46833.97313.97311.09201.09202.13642.15322.1532
C64.70353.62162.37604.11971.50525.64204.80704.80702.16542.16541.09141.09091.0909
H71.08632.12493.26712.55964.46835.64201.78411.78414.65674.65676.55045.79245.7924
H81.09092.13322.61413.10523.97314.80701.78411.75724.19004.54415.81524.98324.6608
H91.09092.13322.61413.10523.97314.80701.78411.75724.54414.19005.81524.66084.9832
H103.99852.61292.06292.59511.09202.16544.65674.19004.54411.76002.50183.07272.5154
H113.99852.61292.06292.59511.09202.16544.65674.54414.19001.76002.50182.51543.0727
H125.67074.46093.32744.74202.13641.09146.55045.81525.81522.50182.50181.76851.7685
H134.80803.91302.64324.54972.15321.09095.79244.98324.66083.07272.51541.76851.7696
H144.80803.91302.64324.54972.15321.09095.79244.66084.98322.51543.07271.76851.7696

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 111.128 C1 C2 O4 125.424
C2 C1 H7 109.544 C2 C1 H8 109.930
C2 C1 H9 109.930 C2 O3 C5 115.812
O3 C2 O4 123.448 O3 C5 C6 107.865
O3 C5 H10 108.765 O3 C5 H11 108.765
C5 C6 H12 109.695 C5 C6 H13 111.063
C5 C6 H14 111.063 C6 C5 H10 111.989
C6 C5 H11 111.989 H7 C1 H8 110.058
H7 C1 H9 110.058 H8 C1 H9 107.294
H10 C5 H11 107.388 H12 C6 H13 108.265
H12 C6 H14 108.265 H13 C6 H14 108.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.508      
2 C 0.321      
3 O -0.182      
4 O -0.632      
5 C -0.101      
6 C -0.759      
7 H 0.285      
8 H 0.214      
9 H 0.214      
10 H 0.239      
11 H 0.239      
12 H 0.249      
13 H 0.209      
14 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.282 2.069 0.000 2.088
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.531 -1.073 0.000
y -1.073 -42.992 0.000
z 0.000 0.000 -35.617
Traceless
 xyz
x 8.774 -1.073 0.000
y -1.073 -9.919 0.000
z 0.000 0.000 1.145
Polar
3z2-r22.289
x2-y212.462
xy-1.073
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.261 0.575 0.000
y 0.575 8.841 0.000
z 0.000 0.000 6.939


<r2> (average value of r2) Å2
<r2> 199.858
(<r2>)1/2 14.137