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

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-52.124893
Energy at 298.15K-52.131585
HF Energy-51.371036
Nuclear repulsion energy100.459137
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 MP2/CEP-121G*
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' 3232 3079 17.36      
2 A' 3225 3073 6.33      
3 A' 3095 2949 36.10      
4 A' 3093 2947 0.78      
5 A' 1772 1688 216.33      
6 A' 1534 1461 8.36      
7 A' 1513 1442 17.23      
8 A' 1501 1430 10.04      
9 A' 1436 1368 55.55      
10 A' 1289 1229 340.48      
11 A' 1223 1166 1.23      
12 A' 1088 1037 79.02      
13 A' 999 952 4.52      
14 A' 857 816 25.84      
15 A' 638 608 6.31      
16 A' 422 402 5.89      
17 A' 290 276 11.89      
18 A" 3201 3050 23.64      
19 A" 3188 3038 6.87      
20 A" 1521 1449 7.24      
21 A" 1511 1440 9.52      
22 A" 1185 1129 1.51      
23 A" 1075 1024 3.28      
24 A" 588 561 5.58      
25 A" 184 176 7.01      
26 A" 151 144 1.53      
27 A" 18 17 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 19914.5 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 18974.5 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 MP2/CEP-121G*
ABC
0.33224 0.13759 0.10100

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 1.514 0.000
C2 0.000 0.496 0.000
O3 -1.201 0.746 0.000
O4 0.502 -0.777 0.000
C5 -0.519 -1.811 0.000
H6 0.697 2.515 0.000
H7 1.752 1.368 0.884
H8 1.752 1.368 -0.884
H9 0.036 -2.748 0.000
H10 -1.144 -1.723 0.892
H11 -1.144 -1.723 -0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51762.45032.37383.70901.08981.09331.09334.39924.05244.0524
C21.51761.22691.36852.36432.13622.14772.14773.24452.65102.6510
O32.45031.22692.28512.64612.59483.14503.14503.70682.62592.6259
O42.37381.36852.28511.45343.29802.63522.63522.02592.09772.0977
C53.70902.36432.64611.45344.49374.00554.00551.08951.09241.0924
H61.08982.13622.59483.29804.49371.79231.79235.30514.70614.7061
H71.09332.14773.14502.63524.00551.79231.76854.54674.23564.5929
H81.09332.14773.14502.63524.00551.79231.76854.54674.59294.2356
H94.39923.24453.70682.02591.08955.30514.54674.54671.79921.7992
H104.05242.65102.62592.09771.09244.70614.23564.59291.79921.7840
H114.05242.65102.62592.09771.09244.70614.59294.23561.79921.7840

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 126.132 C1 C2 O4 110.569
C2 C1 H6 108.926 C2 C1 H7 109.612
C2 C1 H8 109.612 C2 O4 C5 113.799
O3 C2 O4 123.299 O4 C5 H9 104.729
O4 C5 H10 110.169 O4 C5 H11 110.169
H6 C1 H7 110.366 H6 C1 H8 110.366
H7 C1 H8 107.946 H9 C5 H10 111.103
H9 C5 H11 111.103 H10 C5 H11 109.492
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability