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

using model chemistry: B3LYP/CEP-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/CEP-31G*
 hartrees
Energy at 0K-52.525702
Energy at 298.15K-52.532347
Nuclear repulsion energy100.174017
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/CEP-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' 3182 3073 17.46      
2 A' 3170 3061 29.80      
3 A' 3071 2966 7.25      
4 A' 3064 2959 39.78      
5 A' 1806 1744 280.61      
6 A' 1491 1440 9.63      
7 A' 1473 1423 19.76      
8 A' 1468 1418 9.35      
9 A' 1399 1351 56.21      
10 A' 1267 1223 329.08      
11 A' 1198 1157 0.41      
12 A' 1066 1029 75.96      
13 A' 978 944 1.82      
14 A' 850 821 19.46      
15 A' 629 607 6.11      
16 A' 410 396 5.60      
17 A' 278 269 12.40      
18 A" 3146 3038 38.09      
19 A" 3138 3030 14.63      
20 A" 1483 1432 8.48      
21 A" 1475 1424 8.87      
22 A" 1165 1125 0.37      
23 A" 1056 1020 8.62      
24 A" 593 573 4.75      
25 A" 176 170 8.22      
26 A" 144 139 1.06      
27 A" 44 43 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 19608.6 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 18936.1 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/CEP-31G*
ABC
0.33140 0.13576 0.09999

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.162 1.507 0.000
C2 0.000 0.509 0.000
O3 -1.190 0.795 0.000
O4 0.466 -0.776 0.000
C5 -0.560 -1.802 0.000
H6 0.760 2.529 0.000
H7 1.792 1.343 0.891
H8 1.792 1.343 -0.891
H9 -0.018 -2.758 0.000
H10 -1.193 -1.714 0.897
H11 -1.193 -1.714 -0.897

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.53152.45772.38613.72971.09871.10281.10284.42434.08974.0897
C21.53151.22411.36662.37772.15802.16782.16783.26672.67792.6779
O32.45771.22412.28242.67212.60953.16023.16023.74092.66452.6645
O42.38611.36662.28241.45093.31762.65362.65362.04002.10682.1068
C53.72972.37772.67211.45094.52734.02694.02691.09891.10181.1018
H61.09872.15802.60953.31764.52731.80661.80665.34334.75624.7562
H71.10282.16783.16022.65364.02691.80661.78104.57004.27304.6319
H81.10282.16783.16022.65364.02691.80661.78104.57004.63194.2730
H94.42433.26673.74092.04001.09895.34334.57004.57001.81011.8101
H104.08972.67792.66452.10681.10184.75624.27304.63191.81011.7945
H114.08972.67792.66452.10681.10184.75624.63194.27301.81011.7945

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 125.857 C1 C2 O4 110.714
C2 C1 H6 109.157 C2 C1 H7 109.686
C2 C1 H8 109.686 C2 O4 C5 115.081
O3 C2 O4 123.429 O4 C5 H9 105.439
O4 C5 H10 110.493 O4 C5 H11 110.493
H6 C1 H7 110.295 H6 C1 H8 110.295
H7 C1 H8 107.706 H9 C5 H10 110.671
H9 C5 H11 110.671 H10 C5 H11 109.045
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.329      
2 C -0.161      
3 O -0.124      
4 O -0.108      
5 C -0.378      
6 H 0.179      
7 H 0.160      
8 H 0.160      
9 H 0.219      
10 H 0.191      
11 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.532 -1.074 0.000 1.871
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.143 -2.970 0.000
y -2.970 -32.134 0.000
z 0.000 0.000 -28.916
Traceless
 xyz
x 0.382 -2.970 0.000
y -2.970 -2.604 0.000
z 0.000 0.000 2.222
Polar
3z2-r24.445
x2-y21.990
xy-2.970
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.489 -0.176 0.000
y -0.176 7.100 0.000
z 0.000 0.000 4.263


<r2> (average value of r2) Å2
<r2> 100.014
(<r2>)1/2 10.001