return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-266.950205
Energy at 298.15K-266.957283
HF Energy-266.950205
Nuclear repulsion energy183.738124
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 HF/Def2TZVPP
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' 3295 2987 14.48      
2 A' 3292 2984 23.47      
3 A' 3200 2901 38.56      
4 A' 3190 2891 4.29      
5 A' 1975 1790 358.76      
6 A' 1625 1473 6.94      
7 A' 1613 1462 27.05      
8 A' 1586 1437 13.65      
9 A' 1535 1392 80.18      
10 A' 1412 1280 428.41      
11 A' 1329 1204 5.55      
12 A' 1192 1080 81.68      
13 A' 1071 971 4.64      
14 A' 942 854 17.91      
15 A' 695 630 10.87      
16 A' 455 412 7.74      
17 A' 303 274 13.88      
18 A" 3272 2966 30.30      
19 A" 3249 2945 11.08      
20 A" 1613 1462 7.64      
21 A" 1597 1447 6.44      
22 A" 1291 1170 3.39      
23 A" 1174 1064 9.04      
24 A" 672 609 11.75      
25 A" 189 171 5.17      
26 A" 161 146 2.67      
27 A" 90 81 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 21007.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 19041.2 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 HF/Def2TZVPP
ABC
0.35386 0.14046 0.10441

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 1.460 0.000
C2 0.000 0.489 0.000
O3 -1.148 0.768 0.000
O4 0.452 -0.761 0.000
C5 -0.521 -1.782 0.000
H6 0.737 2.466 0.000
H7 1.741 1.303 0.875
H8 1.741 1.303 -0.875
H9 0.011 -2.720 0.000
H10 -1.144 -1.708 0.878
H11 -1.144 -1.708 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.48702.37712.32083.63581.07821.08161.08164.32673.99493.9949
C21.48701.18191.32842.32922.11042.11192.11193.20902.62762.6276
O32.37711.18192.21302.62592.53753.06603.06603.67602.62702.6270
O42.32081.32842.21301.40993.23922.58562.58562.00882.05292.0529
C53.63582.32922.62591.40994.43003.92343.92341.07861.07911.0791
H61.07822.11042.53753.23924.43001.76841.76845.23704.66184.6618
H71.08162.11193.06602.58563.92341.76841.75104.46594.16984.5233
H81.08162.11193.06602.58563.92341.76841.75104.46594.52334.1698
H94.32673.20903.67602.00881.07865.23704.46594.46591.76871.7687
H103.99492.62762.62702.05291.07914.66184.16984.52331.76871.7552
H113.99492.62762.62702.05291.07914.66184.52334.16981.76871.7552

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 125.527 C1 C2 O4 110.915
C2 C1 H6 109.684 C2 C1 H7 109.600
C2 C1 H8 109.600 C2 O4 C5 116.522
O3 C2 O4 123.557 O4 C5 H9 106.901
O4 C5 H10 110.431 O4 C5 H11 110.431
H6 C1 H7 109.927 H6 C1 H8 109.927
H7 C1 H8 108.081 H9 C5 H10 110.117
H9 C5 H11 110.117 H10 C5 H11 108.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.197      
2 C 0.522      
3 O -0.463      
4 O -0.377      
5 C 0.013      
6 H 0.102      
7 H 0.079      
8 H 0.079      
9 H 0.086      
10 H 0.078      
11 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.796 -1.048 0.000 2.079
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.929 4.955 0.000
y 4.955 -26.631 0.000
z 0.000 0.000 -29.069
Traceless
 xyz
x -5.079 4.955 0.000
y 4.955 4.368 0.000
z 0.000 0.000 0.711
Polar
3z2-r21.421
x2-y2-6.298
xy4.955
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.157 0.274 0.000
y 0.274 6.662 0.000
z 0.000 0.000 4.838


<r2> (average value of r2) Å2
<r2> 118.311
(<r2>)1/2 10.877