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

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-268.092036
Energy at 298.15K-268.098554
Nuclear repulsion energy179.899326
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 PBEPBE/6-31+G**
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 3122 3087 4.22      
2 A 3114 3079 11.37      
3 A 3077 3042 17.34      
4 A 3074 3039 3.30      
5 A 3002 2967 4.06      
6 A 2995 2961 29.27      
7 A 1750 1730 251.93      
8 A 1450 1433 9.89      
9 A 1436 1419 12.70      
10 A 1432 1416 8.20      
11 A 1426 1410 18.63      
12 A 1417 1401 17.87      
13 A 1349 1333 50.39      
14 A 1224 1210 294.76      
15 A 1163 1150 0.80      
16 A 1130 1117 0.43      
17 A 1035 1023 66.02      
18 A 1022 1010 5.90      
19 A 957 946 0.81      
20 A 830 821 20.90      
21 A 625 618 3.89      
22 A 586 579 3.44      
23 A 411 406 4.91      
24 A 273 270 12.82      
25 A 182 180 7.44      
26 A 124 123 0.41      
27 A 7 7 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 19106.6 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 18888.8 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 PBEPBE/6-31+G**
ABC
0.33318 0.13714 0.10088

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.807 -0.520 0.001
C2 -0.467 0.177 -0.002
O3 -0.286 1.387 -0.000
O4 0.553 -0.734 -0.002
C5 1.882 -0.161 0.001
H6 -2.608 0.230 -0.035
H7 -1.888 -1.198 -0.864
H8 -1.913 -1.135 0.909
H9 2.566 -1.019 0.003
H10 2.035 0.461 -0.894
H11 2.031 0.460 0.899

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51092.43932.36953.70621.09721.10171.10234.40204.06534.0619
C21.51091.22371.36652.37222.14192.15742.15453.26002.67122.6700
O32.43931.22372.28062.66382.59393.16153.13583.73172.65442.6530
O42.36951.36652.28061.44723.30382.62972.65872.03392.10252.1027
C53.70622.37222.66381.44724.50614.00444.02101.09761.10101.1011
H61.09722.14192.59393.30384.50611.80121.79915.32254.72724.7371
H71.10172.15743.16152.62974.00441.80121.77434.54164.25984.6060
H81.10232.15453.13582.65874.02101.79911.77434.57134.62424.2540
H94.40203.26003.73172.03391.09765.32254.54164.57131.80981.8096
H104.06532.67122.65442.10251.10104.72724.25984.62421.80981.7926
H114.06192.67002.65302.10271.10114.73714.60604.25401.80961.7926

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 125.925 C1 C2 O4 110.769
C2 C1 H6 109.392 C2 C1 H7 110.351
C2 C1 H8 110.084 C2 O4 C5 114.913
O3 C2 O4 123.305 O4 C5 H9 105.290
O4 C5 H10 110.467 O4 C5 H11 110.478
H6 C1 H7 109.998 H6 C1 H8 109.764
H7 C1 H8 107.228 H9 C5 H10 110.808
H9 C5 H11 110.783 H10 C5 H11 108.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.607      
2 C 0.398      
3 O -0.424      
4 O -0.233      
5 C -0.273      
6 H 0.201      
7 H 0.201      
8 H 0.202      
9 H 0.169      
10 H 0.183      
11 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.361 -1.850 0.010 1.884
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.386 1.503 -0.007
y 1.503 -35.717 -0.011
z -0.007 -0.011 -29.724
Traceless
 xyz
x 8.334 1.503 -0.007
y 1.503 -8.661 -0.011
z -0.007 -0.011 0.327
Polar
3z2-r20.655
x2-y211.330
xy1.503
xz-0.007
yz-0.011


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.018 -0.005 -0.006
y -0.005 6.974 -0.003
z -0.006 -0.003 5.155


<r2> (average value of r2) Å2
<r2> 121.902
(<r2>)1/2 11.041