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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-267.908758
Energy at 298.15K-267.915563
HF Energy-266.936421
Nuclear repulsion energy182.031915
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/cc-pVTZ
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' 3225 3062 3.91      
2 A' 3222 3059 10.29      
3 A' 3102 2945 3.51      
4 A' 3097 2941 24.64      
5 A' 1809 1718 201.41      
6 A' 1521 1445 9.15      
7 A' 1490 1414 20.46      
8 A' 1484 1409 12.17      
9 A' 1405 1334 70.08      
10 A' 1291 1226 317.90      
11 A' 1219 1157 1.48      
12 A' 1096 1040 65.68      
13 A' 999 949 1.70      
14 A' 869 825 21.91      
15 A' 651 618 6.24      
16 A' 426 404 5.75      
17 A' 291 277 11.44      
18 A" 3189 3028 15.79      
19 A" 3186 3025 2.70      
20 A" 1506 1430 8.99      
21 A" 1496 1421 6.82      
22 A" 1192 1132 1.34      
23 A" 1073 1019 5.00      
24 A" 611 580 4.44      
25 A" 183 174 6.09      
26 A" 155 147 0.66      
27 A" 47 44 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 19916.8 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 18911.0 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/cc-pVTZ
ABC
0.34075 0.14077 0.10344

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.123 1.468 0.000
C2 0.000 0.490 0.000
O3 -1.182 0.756 0.000
O4 0.490 -0.772 0.000
C5 -0.520 -1.773 0.000
H6 0.724 2.476 0.000
H7 1.747 1.320 0.879
H8 1.747 1.320 -0.879
H9 -0.005 -2.728 0.000
H10 -1.149 -1.685 0.883
H11 -1.149 -1.685 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.48942.41262.32833.63381.08431.08761.08764.34483.98523.9852
C21.48941.21151.35412.32212.11362.12442.12443.21782.61322.6132
O32.41261.21152.26522.61452.56683.10933.10933.67742.59592.5959
O42.32831.35412.26521.42153.25682.59462.59462.01702.07282.0728
C53.63382.32212.61451.42154.42723.93433.93431.08471.08751.0875
H61.08432.11362.56683.25684.42721.77621.77625.25454.64724.6472
H71.08762.12443.10932.59463.93431.77621.75794.49764.17314.5297
H81.08762.12443.10932.59463.93431.77621.75794.49764.52974.1731
H94.34483.21783.67742.01701.08475.25454.49764.49761.78201.7820
H103.98522.61322.59592.07281.08754.64724.17314.52971.78201.7655
H113.98522.61322.59592.07281.08754.64724.52974.17311.78201.7655

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 126.267 C1 C2 O4 109.837
C2 C1 H6 109.409 C2 C1 H7 110.068
C2 C1 H8 110.068 C2 O4 C5 113.541
O3 C2 O4 123.896 O4 C5 H9 106.406
O4 C5 H10 110.707 O4 C5 H11 110.707
H6 C1 H7 109.725 H6 C1 H8 109.725
H7 C1 H8 107.826 H9 C5 H10 110.244
H9 C5 H11 110.244 H10 C5 H11 108.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability