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All results from a given calculation for CH3COOCH3 (methyl acetate)

using model chemistry: PBE1PBE/6-31G*

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/6-31G*
 hartrees
Energy at 0K-268.084364
Energy at 298.15K-268.091106
HF Energy-268.084364
Nuclear repulsion energy182.024085
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/6-31G*
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' 3218 3058 4.89      
2 A' 3209 3049 15.19      
3 A' 3096 2942 3.60      
4 A' 3093 2939 24.83      
5 A' 1876 1783 232.85      
6 A' 1525 1449 8.75      
7 A' 1500 1425 27.26      
8 A' 1494 1420 13.42      
9 A' 1422 1351 81.41      
10 A' 1319 1253 310.80      
11 A' 1224 1163 1.07      
12 A' 1116 1061 53.58      
13 A' 1007 957 1.40      
14 A' 887 843 15.72      
15 A' 656 623 6.64      
16 A' 425 404 6.46      
17 A' 287 273 12.63      
18 A" 3175 3017 20.05      
19 A" 3170 3012 3.37      
20 A" 1512 1437 8.21      
21 A" 1501 1426 8.39      
22 A" 1191 1132 0.75      
23 A" 1076 1023 9.74      
24 A" 611 580 5.63      
25 A" 184 175 6.75      
26 A" 132 126 0.20      
27 A" 50 48 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 19977.1 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 18984.2 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 PBE1PBE/6-31G*
ABC
0.34145 0.14039 0.10334

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 1.489 0.000
C2 0.000 0.488 0.000
O3 -1.179 0.749 0.000
O4 0.480 -0.769 0.000
C5 -0.515 -1.788 0.000
H6 0.709 2.497 0.000
H7 1.755 1.344 0.881
H8 1.755 1.344 -0.881
H9 0.028 -2.733 0.000
H10 -1.148 -1.711 0.888
H11 -1.148 -1.711 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50332.41692.34723.66331.08991.09441.09444.36154.02284.0228
C21.50331.20721.34582.33422.13062.14182.14183.22192.63542.6354
O32.41691.20722.24842.62242.57333.12013.12013.68562.61562.6156
O42.34721.34582.24841.42463.27442.62032.62032.01572.08042.0804
C53.66332.33422.62241.42464.45723.96743.96741.09041.09351.0935
H61.08992.13062.57333.27444.45721.78881.78885.27494.68524.6852
H71.09442.14183.12012.62033.96741.78881.76274.51474.21434.5708
H81.09442.14183.12012.62033.96741.78881.76274.51474.57084.2143
H94.36153.22193.68562.01571.09045.27494.51474.51471.79411.7941
H104.02282.63542.61562.08041.09354.68524.21434.57081.79411.7765
H114.02282.63542.61562.08041.09354.68524.57084.21431.79411.7765

picture of methyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 125.819 C1 C2 O4 110.824
C2 C1 H6 109.455 C2 C1 H7 110.082
C2 C1 H8 110.082 C2 O4 C5 114.789
O3 C2 O4 123.357 O4 C5 H9 105.776
O4 C5 H10 110.729 O4 C5 H11 110.729
H6 C1 H7 109.954 H6 C1 H8 109.954
H7 C1 H8 107.290 H9 C5 H10 110.475
H9 C5 H11 110.475 H10 C5 H11 108.651
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.608      
2 C 0.604      
3 O -0.469      
4 O -0.443      
5 C -0.292      
6 H 0.212      
7 H 0.210      
8 H 0.210      
9 H 0.189      
10 H 0.194      
11 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.522 -0.937 0.000 1.787
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.019 4.490 0.000
y 4.490 -26.095 0.000
z 0.000 0.000 -28.768
Traceless
 xyz
x -4.587 4.490 0.000
y 4.490 4.299 0.000
z 0.000 0.000 0.289
Polar
3z2-r20.577
x2-y2-5.924
xy4.490
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.730 0.275 0.000
y 0.275 6.436 0.000
z 0.000 0.000 4.214


<r2> (average value of r2) Å2
<r2> 118.935
(<r2>)1/2 10.906