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

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-307.662533
Energy at 298.15K 
HF Energy-307.662533
Nuclear repulsion energy239.219643
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 B3LYP/LANL2DZ
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' 3198 3074 12.86 57.90 0.69 0.82
2 A' 3144 3022 37.49 62.20 0.72 0.84
3 A' 3078 2959 19.19 103.95 0.06 0.11
4 A' 3068 2949 3.06 147.51 0.00 0.01
5 A' 3054 2935 22.30 127.00 0.01 0.03
6 A' 1694 1628 219.48 3.01 0.30 0.46
7 A' 1534 1474 12.57 0.90 0.74 0.85
8 A' 1521 1462 4.72 19.62 0.73 0.84
9 A' 1497 1439 29.99 12.88 0.71 0.83
10 A' 1446 1390 14.86 2.29 0.72 0.84
11 A' 1432 1376 50.05 2.04 0.75 0.86
12 A' 1407 1352 0.59 3.52 0.75 0.85
13 A' 1257 1208 382.43 0.55 0.75 0.86
14 A' 1142 1098 5.77 10.06 0.20 0.34
15 A' 1065 1024 124.75 4.90 0.66 0.79
16 A' 1026 986 9.96 2.56 0.35 0.52
17 A' 936 899 21.67 1.94 0.44 0.61
18 A' 815 784 9.83 15.07 0.24 0.38
19 A' 620 596 7.35 10.51 0.34 0.51
20 A' 418 401 0.62 0.68 0.62 0.77
21 A' 354 340 10.25 3.96 0.36 0.53
22 A' 182 175 6.85 0.39 0.67 0.81
23 A" 3163 3040 62.04 10.11 0.75 0.86
24 A" 3152 3029 10.32 50.88 0.75 0.86
25 A" 3133 3011 3.18 77.74 0.75 0.86
26 A" 1508 1449 11.34 14.43 0.75 0.86
27 A" 1500 1442 16.69 12.69 0.75 0.86
28 A" 1290 1240 0.04 14.87 0.75 0.86
29 A" 1177 1131 6.46 2.18 0.75 0.86
30 A" 1084 1042 10.79 1.71 0.75 0.86
31 A" 823 791 3.25 0.10 0.75 0.86
32 A" 587 564 5.37 1.71 0.75 0.86
33 A" 251 241 1.98 0.03 0.75 0.86
34 A" 151 146 8.25 0.01 0.75 0.86
35 A" 58 56 0.23 0.52 0.75 0.86
36 A" 34 32 0.98 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25898.1 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 24893.2 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 B3LYP/LANL2DZ
ABC
0.27042 0.06716 0.05548

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.341 0.011 0.000
C2 -0.936 -0.543 0.000
O3 0.000 0.478 0.000
O4 -0.619 -1.744 0.000
C5 1.433 0.088 0.000
C6 2.244 1.379 0.000
H7 -3.060 -0.811 0.000
H8 -2.496 0.641 0.884
H9 -2.496 0.641 -0.884
H10 1.624 -0.527 0.888
H11 1.624 -0.527 -0.888
H12 3.316 1.145 0.000
H13 2.020 1.980 -0.889
H14 2.020 1.980 0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.51092.38742.45923.77554.78481.09171.09591.09594.09894.09895.77004.86664.8666
C21.51091.38441.24272.45143.71492.14112.14832.14832.70922.70924.57443.98573.9857
O32.38741.38442.30681.48552.41793.32012.65242.65242.10572.10573.38262.66922.6692
O42.45921.24272.30682.75134.23692.61313.16093.16092.70232.70234.88204.65004.6500
C53.77552.45141.48552.75131.52454.58214.06494.06491.09631.09632.15922.17092.1709
C64.78483.71492.41794.23691.52455.73784.87714.87712.19182.19181.09771.09581.0958
H71.09172.14113.32012.61314.58215.73781.79071.79074.77564.77566.66915.86325.8632
H81.09592.14832.65243.16094.06494.87711.79071.76724.28184.63375.90015.03204.7096
H91.09592.14832.65243.16094.06494.87711.79071.76724.63374.28185.90014.70965.0320
H104.09892.70922.10572.70231.09632.19184.77564.28184.63371.77542.53883.09752.5375
H114.09892.70922.10572.70231.09632.19184.77564.63374.28181.77542.53882.53753.0975
H125.77004.57443.38264.88202.15921.09776.66915.90015.90012.53882.53881.77981.7798
H134.86663.98572.66924.65002.17091.09585.86325.03204.70963.09752.53751.77981.7772
H144.86663.98572.66924.65002.17091.09585.86324.70965.03202.53753.09751.77981.7772

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 111.014 C1 C2 O4 126.253
C2 C1 H7 109.651 C2 C1 H8 109.971
C2 C1 H9 109.971 C2 O3 C5 117.296
O3 C2 O4 122.733 O3 C5 C6 106.889
O3 C5 H10 108.353 O3 C5 H11 108.353
C5 C6 H12 109.790 C5 C6 H13 110.836
C5 C6 H14 110.836 C6 C5 H10 112.479
C6 C5 H11 112.479 H7 C1 H8 109.880
H7 C1 H9 109.880 H8 C1 H9 107.460
H10 C5 H11 108.138 H12 C6 H13 108.466
H12 C6 H14 108.466 H13 C6 H14 108.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.692      
2 C 0.330      
3 O -0.307      
4 O -0.288      
5 C -0.171      
6 C -0.623      
7 H 0.232      
8 H 0.233      
9 H 0.233      
10 H 0.214      
11 H 0.214      
12 H 0.195      
13 H 0.215      
14 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.435 2.102 0.000 2.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.886 -1.055 0.000
y -1.055 -43.933 0.000
z 0.000 0.000 -35.342
Traceless
 xyz
x 10.751 -1.055 0.000
y -1.055 -11.819 0.000
z 0.000 0.000 1.068
Polar
3z2-r22.136
x2-y215.047
xy-1.055
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.484 0.579 0.000
y 0.579 7.466 0.000
z 0.000 0.000 5.413


<r2> (average value of r2) Å2
<r2> 207.803
(<r2>)1/2 14.415