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

using model chemistry: MP2/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 MP2/CEP-31G*
 hartrees
Energy at 0K-52.066014
Energy at 298.15K-52.072801
HF Energy-51.359787
Nuclear repulsion energy100.131975
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-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' 3245 3081 25.96      
2 A' 3244 3080 6.51      
3 A' 3114 2957 9.09      
4 A' 3111 2953 36.30      
5 A' 1804 1713 235.51      
6 A' 1520 1443 9.53      
7 A' 1500 1424 17.30      
8 A' 1494 1418 10.08      
9 A' 1436 1363 63.58      
10 A' 1297 1231 327.13      
11 A' 1219 1157 1.05      
12 A' 1089 1034 76.64      
13 A' 1003 952 4.28      
14 A' 862 818 24.95      
15 A' 639 607 7.04      
16 A' 419 398 5.46      
17 A' 290 275 11.93      
18 A" 3221 3058 29.68      
19 A" 3212 3049 9.48      
20 A" 1513 1437 7.92      
21 A" 1503 1427 8.95      
22 A" 1189 1129 0.84      
23 A" 1084 1029 6.50      
24 A" 601 571 4.85      
25 A" 191 182 5.35      
26 A" 169 160 4.38      
27 A" 53 50 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 20010.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 18998.1 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 MP2/CEP-31G*
ABC
0.32859 0.13694 0.10038

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.138 1.513 0.000
C2 0.000 0.495 0.000
O3 -1.206 0.753 0.000
O4 0.500 -0.780 0.000
C5 -0.525 -1.812 0.000
H6 0.712 2.526 0.000
H7 1.767 1.360 0.892
H8 1.767 1.360 -0.892
H9 0.032 -2.759 0.000
H10 -1.155 -1.722 0.899
H11 -1.155 -1.722 -0.899

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.52642.46322.37933.71771.09931.10251.10254.41244.06554.0655
C21.52641.23291.36932.36642.15222.15982.15983.25422.65672.6567
O32.46321.23292.29342.65432.61133.16193.16193.72392.63412.6341
O42.37931.36932.29341.45543.31252.64132.64132.03402.10622.1062
C53.71772.36642.65431.45544.51144.01384.01381.09851.10121.1012
H61.09932.15222.61133.31254.51141.80831.80835.32864.72664.7266
H71.10252.15983.16192.64134.01381.80831.78494.55724.24654.6088
H81.10252.15983.16192.64134.01381.80831.78494.55724.60884.2465
H94.41243.25423.72392.03401.09855.32864.55724.55721.81441.8144
H104.06552.65672.63412.10621.10124.72664.24654.60881.81441.7978
H114.06552.65672.63412.10621.10124.72664.60884.24651.81441.7978

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 126.094 C1 C2 O4 110.386
C2 C1 H6 109.018 C2 C1 H7 109.426
C2 C1 H8 109.426 C2 O4 C5 113.774
O3 C2 O4 123.520 O4 C5 H9 104.715
O4 C5 H10 110.168 O4 C5 H11 110.168
H6 C1 H7 110.431 H6 C1 H8 110.431
H7 C1 H8 108.088 H9 C5 H10 111.143
H9 C5 H11 111.143 H10 C5 H11 109.431
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability