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

using model chemistry: MP2/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-267.930378
Energy at 298.15K-267.937185
HF Energy-266.939760
Nuclear repulsion energy181.839535
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/aug-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' 3219 3067 3.51      
2 A' 3217 3065 8.39      
3 A' 3096 2950 3.76      
4 A' 3092 2947 24.92      
5 A' 1787 1703 226.57      
6 A' 1520 1448 10.56      
7 A' 1492 1422 18.08      
8 A' 1483 1413 12.73      
9 A' 1410 1343 56.05      
10 A' 1286 1225 329.21      
11 A' 1216 1158 1.01      
12 A' 1089 1038 70.44      
13 A' 998 951 1.87      
14 A' 864 823 23.95      
15 A' 647 616 5.98      
16 A' 425 405 5.56      
17 A' 290 277 12.14      
18 A" 3184 3034 13.50      
19 A" 3181 3031 2.07      
20 A" 1510 1439 9.67      
21 A" 1500 1430 6.93      
22 A" 1186 1131 1.34      
23 A" 1075 1024 4.63      
24 A" 610 581 4.64      
25 A" 183 174 6.02      
26 A" 159 151 1.19      
27 A" 48 46 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 19883.0 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 18946.5 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/aug-cc-pVTZ
ABC
0.34038 0.14035 0.10319

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.121 1.472 0.000
C2 0.000 0.492 0.000
O3 -1.184 0.756 0.000
O4 0.490 -0.772 0.000
C5 -0.516 -1.779 0.000
H6 0.719 2.480 0.000
H7 1.745 1.325 0.880
H8 1.745 1.325 -0.880
H9 0.005 -2.731 0.000
H10 -1.144 -1.692 0.884
H11 -1.144 -1.692 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.48932.41442.33113.64041.08511.08841.08844.34943.99073.9907
C21.48931.21311.35532.32922.11382.12412.12413.22362.61922.6192
O32.41441.21312.26582.62122.56813.11083.11083.68422.60232.6023
O42.33111.35532.26581.42363.25962.59702.59702.01892.07332.0733
C53.64042.32922.62121.42364.43453.93963.93961.08561.08821.0882
H61.08512.11382.56813.25964.43451.77791.77795.26004.65354.6535
H71.08842.12413.11082.59703.93961.77791.75984.50044.17694.5341
H81.08842.12413.11082.59703.93961.77791.75984.50044.53414.1769
H94.34943.22363.68422.01891.08565.26004.50044.50041.78451.7845
H103.99072.61922.60232.07331.08824.65354.17694.53411.78451.7685
H113.99072.61922.60232.07331.08824.65354.53414.17691.78451.7685

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 126.305 C1 C2 O4 109.974
C2 C1 H6 109.381 C2 C1 H7 110.006
C2 C1 H8 110.006 C2 O4 C5 113.871
O3 C2 O4 123.721 O4 C5 H9 106.360
O4 C5 H10 110.545 O4 C5 H11 110.545
H6 C1 H7 109.771 H6 C1 H8 109.771
H7 C1 H8 107.888 H9 C5 H10 110.349
H9 C5 H11 110.349 H10 C5 H11 108.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability