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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-268.070201
Energy at 298.15K-268.076724
HF Energy-268.070201
Nuclear repulsion energy180.140288
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3126 3074 5.84      
2 A' 3115 3063 15.48      
3 A' 3008 2958 3.30      
4 A' 3001 2951 27.35      
5 A' 1783 1754 193.28      
6 A' 1476 1452 8.36      
7 A' 1453 1429 15.32      
8 A' 1437 1413 13.55      
9 A' 1367 1344 44.05      
10 A' 1239 1219 284.53      
11 A' 1173 1154 1.59      
12 A' 1049 1032 64.93      
13 A' 966 950 1.02      
14 A' 838 824 16.09      
15 A' 629 619 4.30      
16 A' 411 404 5.64      
17 A' 276 271 11.56      
18 A" 3076 3026 24.48      
19 A" 3076 3025 1.35      
20 A" 1461 1437 9.13      
21 A" 1457 1432 6.40      
22 A" 1143 1124 0.34      
23 A" 1034 1017 7.79      
24 A" 584 574 3.51      
25 A" 180 177 6.11      
26 A" 117 115 0.14      
27 A" 17 17 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 19244.5 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 18927.0 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 PBEPBEultrafine/6-31G*
ABC
0.33279 0.13802 0.10131

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.136 1.496 0.000
C2 0.000 0.496 0.000
O3 -1.192 0.761 0.000
O4 0.490 -0.780 0.000
C5 -0.527 -1.803 0.000
H6 0.724 2.514 0.000
H7 1.774 1.351 0.887
H8 1.774 1.351 -0.887
H9 0.018 -2.757 0.000
H10 -1.164 -1.719 0.895
H11 -1.164 -1.719 -0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51382.44092.36603.69461.09801.10271.10274.39804.05374.0537
C21.51381.22091.36622.35832.14472.16032.16033.25282.65762.6576
O32.44091.22092.28062.64892.59713.15153.15153.72042.63722.6372
O42.36601.36622.28061.44233.30242.64162.64162.03292.10232.1023
C53.69462.35832.64891.44234.49504.00384.00381.09861.10211.1021
H61.09802.14472.59713.30244.49501.80071.80075.31864.72154.7215
H71.10272.16033.15152.64164.00381.80071.77474.55524.25004.6087
H81.10272.16033.15152.64164.00381.80071.77474.55524.60874.2500
H94.39803.25283.72042.03291.09865.31864.55524.55521.80991.8099
H104.05372.65762.63722.10231.10214.72154.25004.60871.80991.7901
H114.05372.65762.63722.10231.10214.72154.60874.25001.80991.7901

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 126.061 C1 C2 O4 110.377
C2 C1 H6 109.374 C2 C1 H7 110.323
C2 C1 H8 110.323 C2 O4 C5 114.188
O3 C2 O4 123.562 O4 C5 H9 105.473
O4 C5 H10 110.722 O4 C5 H11 110.722
H6 C1 H7 109.818 H6 C1 H8 109.818
H7 C1 H8 107.159 H9 C5 H10 110.652
H9 C5 H11 110.652 H10 C5 H11 108.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.569      
2 C 0.548      
3 O -0.432      
4 O -0.391      
5 C -0.278      
6 H 0.195      
7 H 0.195      
8 H 0.195      
9 H 0.174      
10 H 0.181      
11 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.443 -0.919 0.000 1.710
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.895 4.328 0.004
y 4.328 -26.249 0.000
z 0.004 0.000 -28.896
Traceless
 xyz
x -4.323 4.328 0.004
y 4.328 4.146 0.000
z 0.004 0.000 0.177
Polar
3z2-r20.353
x2-y2-5.646
xy4.328
xz0.004
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.979 0.392 0.000
y 0.392 6.913 0.001
z 0.000 0.001 4.311


<r2> (average value of r2) Å2
<r2> 120.914
(<r2>)1/2 10.996