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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-268.388483
Energy at 298.15K-268.395187
Nuclear repulsion energy180.522310
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 B3LYP/6-31G*
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' 3183 3057 8.34      
2 A' 3179 3053 17.77      
3 A' 3074 2952 30.11      
4 A' 3072 2950 1.09      
5 A' 1835 1762 222.40      
6 A' 1526 1465 7.89      
7 A' 1502 1442 15.64      
8 A' 1494 1435 9.31      
9 A' 1422 1365 44.43      
10 A' 1291 1240 337.34      
11 A' 1220 1171 1.34      
12 A' 1088 1045 70.14      
13 A' 996 956 1.45      
14 A' 865 831 16.83      
15 A' 645 620 5.91      
16 A' 422 405 6.30      
17 A' 283 271 12.00      
18 A" 3147 3022 23.86      
19 A" 3134 3010 6.49      
20 A" 1513 1453 6.59      
21 A" 1505 1446 6.68      
22 A" 1185 1138 0.99      
23 A" 1077 1034 8.11      
24 A" 605 581 6.19      
25 A" 180 173 6.54      
26 A" 130 125 0.22      
27 A" 52 50 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 19811.2 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 19024.7 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 B3LYP/6-31G*
ABC
0.33844 0.13834 0.10196

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.133 1.493 0.000
C2 0.000 0.494 0.000
O3 -1.181 0.764 0.000
O4 0.476 -0.774 0.000
C5 -0.523 -1.805 0.000
H6 0.725 2.504 0.000
H7 1.765 1.346 0.882
H8 1.765 1.346 -0.882
H9 0.027 -2.747 0.000
H10 -1.155 -1.730 0.889
H11 -1.155 -1.730 -0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51102.42622.35983.69051.09051.09491.09494.38144.05164.0516
C21.51101.21131.35392.35742.13702.14952.14953.24042.65892.6589
O32.42621.21132.26062.65182.58053.12973.12973.71262.64782.6478
O42.35981.35392.26061.43613.28702.63292.63292.02352.08982.0898
C53.69052.35742.65181.43614.48603.99283.99281.09061.09351.0935
H61.09052.13702.58053.28704.48601.78921.78925.29674.71724.7172
H71.09492.14953.12972.63293.99281.78921.76434.53304.24154.5965
H81.09492.14953.12972.63293.99281.78921.76434.53304.59654.2415
H94.38143.24043.71262.02351.09065.29674.53304.53301.79501.7950
H104.05162.65892.64782.08981.09354.71724.24154.59651.79501.7781
H114.05162.65892.64782.08981.09354.71724.59654.24151.79501.7781

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 125.704 C1 C2 O4 110.799
C2 C1 H6 109.402 C2 C1 H7 110.126
C2 C1 H8 110.126 C2 O4 C5 115.298
O3 C2 O4 123.497 O4 C5 H9 105.600
O4 C5 H10 110.677 O4 C5 H11 110.677
H6 C1 H7 109.908 H6 C1 H8 109.908
H7 C1 H8 107.349 H9 C5 H10 110.540
H9 C5 H11 110.540 H10 C5 H11 108.794
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.522 -0.409   -0.533
2 C 0.596 0.113   0.146
3 O -0.466 0.117   0.149
4 O -0.439 0.117   0.149
5 C -0.217 0.022   0.056
6 H 0.183 0.022   0.056
7 H 0.182 0.116   -0.010
8 H 0.182 -0.417   -0.401
9 H 0.163 -0.529   -0.529
10 H 0.170 0.777   0.807
11 H 0.170 0.072   0.108


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.494 -0.974 0.000 1.784
CHELPG -2.323 -3.788 0.000 4.444
AIM        
ESP -2.329 -3.796 0.000 4.453


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.030 -2.668 0.000
y -2.668 -31.540 0.000
z 0.000 0.000 -28.928
Traceless
 xyz
x 0.204 -2.668 0.000
y -2.668 -2.061 0.000
z 0.000 0.000 1.857
Polar
3z2-r23.714
x2-y21.510
xy-2.668
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.338 -0.192 0.000
y -0.192 7.024 0.000
z 0.000 0.000 4.154


<r2> (average value of r2) Å2
<r2> 119.112
(<r2>)1/2 10.914