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

using model chemistry: PBEPBE/3-21G

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/3-21G
 hartrees
Energy at 0K-266.594289
Energy at 298.15K-266.600706
Nuclear repulsion energy177.882118
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/3-21G
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 3123 3094 5.34      
2 A 3114 3086 12.27      
3 A 3074 3046 3.29      
4 A 3063 3035 21.84      
5 A 3010 2983 1.00      
6 A 2994 2966 21.05      
7 A 1720 1704 116.99      
8 A 1515 1501 10.74      
9 A 1495 1482 18.07      
10 A 1493 1480 3.08      
11 A 1483 1470 20.04      
12 A 1434 1421 11.63      
13 A 1386 1374 34.29      
14 A 1193 1182 236.73      
15 A 1138 1128 11.97      
16 A 1118 1108 0.05      
17 A 1057 1048 10.38      
18 A 1012 1003 81.97      
19 A 943 934 1.17      
20 A 786 779 13.31      
21 A 614 608 3.38      
22 A 579 574 2.23      
23 A 393 390 5.71      
24 A 262 260 13.15      
25 A 176 174 8.73      
26 A 55 55 0.05      
27 A 48 47 1.36      

Unscaled Zero Point Vibrational Energy (zpe) 19138.6 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 18964.4 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/3-21G
ABC
0.32090 0.13565 0.09894

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.822 -0.518 -0.000
C2 -0.483 0.196 -0.000
O3 -0.260 1.411 -0.000
O4 0.535 -0.764 0.000
C5 1.898 -0.170 -0.000
H6 -2.632 0.224 -0.000
H7 -1.897 -1.166 -0.890
H8 -1.897 -1.165 0.890
H9 2.574 -1.035 -0.001
H10 2.050 0.457 -0.894
H11 2.051 0.456 0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51752.48272.36993.73681.09811.10301.10304.42674.09244.0929
C21.51751.23581.39932.40962.14852.15492.15493.29592.69952.7002
O32.48271.23582.31612.67572.65233.17983.17963.74412.65512.6565
O42.36991.39932.31611.48723.31712.62042.62082.05722.14152.1415
C53.73682.40962.67571.48724.54714.02324.02351.09771.10231.1023
H61.09812.14852.65233.31714.54711.80601.80605.35594.77244.7732
H71.10302.15493.17982.62044.02321.80601.78034.56044.26764.6259
H81.10302.15493.17962.62084.02351.80601.78034.56114.62574.2677
H94.42673.29593.74412.05721.09775.35594.56044.56111.81571.8157
H104.09242.69952.65512.14151.10234.77244.26764.62571.81571.7888
H114.09292.70022.65652.14151.10234.77324.62594.26771.81571.7888

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 128.478 C1 C2 O4 108.616
C2 C1 H6 109.410 C2 C1 H7 109.623
C2 C1 H8 109.622 C2 O4 C5 113.147
O3 C2 O4 122.907 O4 C5 H9 104.458
O4 C5 H10 110.711 O4 C5 H11 110.711
H6 C1 H7 110.272 H6 C1 H8 110.269
H7 C1 H8 107.623 H9 C5 H10 111.243
H9 C5 H11 111.239 H10 C5 H11 108.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.672      
2 C 0.573      
3 O -0.449      
4 O -0.446      
5 C -0.406      
6 H 0.237      
7 H 0.245      
8 H 0.245      
9 H 0.221      
10 H 0.226      
11 H 0.226      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.341 -1.427 0.000 1.468
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.629 1.340 -0.000
y 1.340 -34.375 0.000
z -0.000 0.000 -29.096
Traceless
 xyz
x 8.106 1.340 -0.000
y 1.340 -8.012 0.000
z -0.000 0.000 -0.094
Polar
3z2-r2-0.188
x2-y210.746
xy1.340
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.757 -0.044 0.000
y -0.044 5.383 0.000
z 0.000 0.000 3.815


<r2> (average value of r2) Å2
<r2> 123.130
(<r2>)1/2 11.096