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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-267.635195
Energy at 298.15K-267.641957
HF Energy-266.831509
Nuclear repulsion energy 
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 MP4/6-31G*
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' 3201 3056        
2 A' 3196 3051        
3 A' 3084 2944        
4 A' 3082 2943        
5 A' 1798 1716        
6 A' 1539 1470        
7 A' 1520 1451        
8 A' 1500 1432        
9 A' 1438 1373        
10 A' 1305 1246        
11 A' 1222 1167        
12 A' 1093 1044        
13 A' 1002 957        
14 A' 859 820        
15 A' 644 615        
16 A' 424 405        
17 A' 290 276        
18 A" 3171 3028        
19 A" 3161 3018        
20 A" 1529 1460        
21 A" 1520 1451        
22 A" 1191 1137        
23 A" 1083 1034        
24 A" 597 570        
25 A" 181 173        
26 A" 158 151        
27 A" 53 50        

Unscaled Zero Point Vibrational Energy (zpe) 19917.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 19017.6 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 MP4/6-31G*
ABC
0.33388 0.13860 0.10171

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 1.505 0.000
C2 0.000 0.493 0.000
O3 -1.197 0.747 0.000
O4 0.499 -0.775 0.000
C5 -0.517 -1.803 0.000
H6 0.696 2.511 0.000
H7 1.753 1.362 0.886
H8 1.753 1.362 -0.886
H9 0.034 -2.746 0.000
H10 -1.146 -1.719 0.892
H11 -1.146 -1.719 -0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51092.43952.36293.69151.09311.09641.09644.38774.04144.0414
C21.51091.22321.36262.35362.13492.14722.14723.23952.64632.6463
O32.43951.22322.27852.63922.58763.14013.14013.70382.62322.6232
O42.36291.36262.27851.44563.29192.63052.63052.02552.09622.0962
C53.69152.35362.63921.44564.48173.99383.99381.09231.09491.0949
H61.09312.13492.58763.29194.48171.79491.79495.29894.69964.6996
H71.09642.14723.14012.63053.99381.79491.77154.54004.22994.5884
H81.09642.14723.14012.63053.99381.79491.77154.54004.58844.2299
H94.38773.23953.70382.02551.09235.29894.54004.54001.80101.8010
H104.04142.64632.62322.09621.09494.69964.22994.58841.80101.7846
H114.04142.64632.62322.09621.09494.69964.58844.22991.80101.7846

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 125.996 C1 C2 O4 110.531
C2 C1 H6 109.089 C2 C1 H7 109.865
C2 C1 H8 109.865 C2 O4 C5 113.859
O3 C2 O4 123.473 O4 C5 H9 105.051
O4 C5 H10 110.436 O4 C5 H11 110.436
H6 C1 H7 110.119 H6 C1 H8 110.119
H7 C1 H8 107.771 H9 C5 H10 110.856
H9 C5 H11 110.856 H10 C5 H11 109.161
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability