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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-268.392071
Energy at 298.15K-268.398772
Nuclear repulsion energy182.316930
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 mPW1PW91/6-311G**
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' 3197 3058 6.27      
2 A' 3188 3050 15.74      
3 A' 3079 2946 2.79      
4 A' 3072 2939 27.34      
5 A' 1856 1775 260.15      
6 A' 1504 1439 8.63      
7 A' 1480 1416 31.51      
8 A' 1471 1408 14.07      
9 A' 1398 1338 85.76      
10 A' 1293 1237 317.77      
11 A' 1216 1163 1.05      
12 A' 1100 1052 61.99      
13 A' 996 953 1.80      
14 A' 881 843 19.11      
15 A' 656 628 6.50      
16 A' 426 408 6.21      
17 A' 286 274 12.39      
18 A" 3151 3014 6.71      
19 A" 3150 3013 21.13      
20 A" 1486 1422 10.65      
21 A" 1476 1412 9.31      
22 A" 1181 1130 0.79      
23 A" 1067 1020 8.26      
24 A" 611 585 5.45      
25 A" 182 174 7.07      
26 A" 119 113 0.25      
27 A" 31 30 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 19775.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18919.6 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 mPW1PW91/6-311G**
ABC
0.34393 0.14031 0.10350

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.123 1.486 0.000
C2 0.000 0.491 0.000
O3 -1.172 0.753 0.000
O4 0.474 -0.767 0.000
C5 -0.518 -1.791 0.000
H6 0.715 2.492 0.000
H7 1.752 1.335 0.879
H8 1.752 1.335 -0.879
H9 0.028 -2.731 0.000
H10 -1.149 -1.716 0.886
H11 -1.149 -1.716 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50052.40912.34403.66501.08661.09111.09114.35674.02504.0250
C21.50051.20071.34412.34012.12562.13402.13403.22202.64132.6413
O32.40911.20072.24042.62682.56623.10763.10763.68492.62362.6236
O42.34401.34412.24041.42653.26822.61182.61182.01442.07912.0791
C53.66502.34012.62681.42654.45773.96213.96211.08701.09061.0906
H61.08662.12562.56623.26824.45771.78541.78545.26864.68764.6876
H71.09112.13403.10762.61183.96211.78541.75844.50304.20994.5651
H81.09112.13403.10762.61183.96211.78541.75844.50304.56514.2099
H94.35673.22203.68492.01441.08705.26864.50304.50301.78911.7891
H104.02502.64132.62362.07911.09064.68764.20994.56511.78911.7729
H114.02502.64132.62362.07911.09064.68764.56514.20991.78911.7729

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 125.855 C1 C2 O4 110.858
C2 C1 H6 109.454 C2 C1 H7 109.849
C2 C1 H8 109.849 C2 O4 C5 115.233
O3 C2 O4 123.288 O4 C5 H9 105.747
O4 C5 H10 110.677 O4 C5 H11 110.677
H6 C1 H7 110.142 H6 C1 H8 110.142
H7 C1 H8 107.381 H9 C5 H10 110.494
H9 C5 H11 110.494 H10 C5 H11 108.743
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.333      
2 C 0.323      
3 O -0.361      
4 O -0.324      
5 C -0.151      
6 H 0.151      
7 H 0.149      
8 H 0.149      
9 H 0.129      
10 H 0.134      
11 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.522 -0.956 0.000 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.382 4.572 0.000
y 4.572 -26.328 0.000
z 0.000 0.000 -28.962
Traceless
 xyz
x -4.738 4.572 0.000
y 4.572 4.345 0.000
z 0.000 0.000 0.393
Polar
3z2-r20.786
x2-y2-6.055
xy4.572
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.071 0.383 0.000
y 0.383 6.791 0.000
z 0.000 0.000 4.521


<r2> (average value of r2) Å2
<r2> 118.929
(<r2>)1/2 10.905