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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-268.396757
Energy at 298.15K-268.403436
Nuclear repulsion energy180.546938
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' 3182 3058 7.13      
2 A' 3172 3048 17.30      
3 A' 3067 2947 4.13      
4 A' 3063 2943 27.12      
5 A' 1835 1764 221.77      
6 A' 1511 1452 7.40      
7 A' 1486 1428 17.72      
8 A' 1481 1423 9.34      
9 A' 1407 1352 50.92      
10 A' 1286 1235 331.54      
11 A' 1212 1164 1.40      
12 A' 1082 1040 67.68      
13 A' 989 951 1.14      
14 A' 864 830 16.65      
15 A' 645 619 5.95      
16 A' 421 405 6.33      
17 A' 282 271 12.20      
18 A" 3140 3017 23.21      
19 A" 3134 3011 5.82      
20 A" 1496 1438 6.99      
21 A" 1490 1432 6.09      
22 A" 1179 1132 0.94      
23 A" 1067 1025 8.01      
24 A" 602 579 6.00      
25 A" 180 173 6.62      
26 A" 119 115 0.20      
27 A" 46 44 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 19719.3 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 18946.3 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
0.33880 0.13842 0.10202

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 1.130 1.495 0.000
C2 0.000 0.494 0.000
O3 -1.181 0.760 0.000
O4 0.479 -0.773 0.000
C5 -0.521 -1.805 0.000
H6 0.720 2.504 0.000
H7 1.762 1.349 0.881
H8 1.762 1.349 -0.881
H9 0.027 -2.747 0.000
H10 -1.153 -1.730 0.888
H11 -1.153 -1.730 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51002.42572.35953.68991.08931.09381.09384.38304.05044.0504
C21.51001.21111.35402.35692.13522.14722.14723.24082.65802.6580
O32.42571.21112.25982.64892.57983.12803.12803.70972.64422.6442
O42.35951.35402.25981.43683.28562.63102.63102.02522.09032.0903
C53.68992.35692.64891.43684.48393.99133.99131.08991.09281.0928
H61.08932.13522.57983.28564.48391.78791.78795.29644.71454.7145
H71.09382.14723.12802.63103.99131.78791.76244.53414.23994.5942
H81.09382.14723.12802.63103.99131.78791.76244.53414.59424.2399
H94.38303.24083.70972.02521.08995.29644.53414.53411.79341.7934
H104.05042.65802.64422.09031.09284.71454.23994.59421.79341.7758
H114.05042.65802.64422.09031.09284.71454.59424.23991.79341.7758

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 125.756 C1 C2 O4 110.823
C2 C1 H6 109.394 C2 C1 H7 110.079
C2 C1 H8 110.079 C2 O4 C5 115.211
O3 C2 O4 123.421 O4 C5 H9 105.728
O4 C5 H10 110.710 O4 C5 H11 110.710
H6 C1 H7 109.964 H6 C1 H8 109.964
H7 C1 H8 107.338 H9 C5 H10 110.501
H9 C5 H11 110.501 H10 C5 H11 108.682
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 -0.383      
2 C 0.582      
3 O -0.468      
4 O -0.451      
5 C -0.083      
6 H 0.141      
7 H 0.142      
8 H 0.142      
9 H 0.119      
10 H 0.129      
11 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.500 -0.953 0.000 1.777
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.980 -2.664 0.000
y -2.664 -31.517 0.000
z 0.000 0.000 -28.930
Traceless
 xyz
x 0.243 -2.664 0.000
y -2.664 -2.062 0.000
z 0.000 0.000 1.819
Polar
3z2-r23.638
x2-y21.537
xy-2.664
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.410 -0.203 0.000
y -0.203 7.108 0.000
z 0.000 0.000 4.210


<r2> (average value of r2) Å2
<r2> 119.083
(<r2>)1/2 10.913