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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-267.593234
Energy at 298.15K-267.600082
HF Energy-266.833200
Nuclear repulsion energy181.222124
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=FULL/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' 3258 3070 13.19      
2 A' 3253 3065 3.60      
3 A' 3132 2951 24.41      
4 A' 3130 2949 0.59      
5 A' 1838 1732 179.72      
6 A' 1561 1470 7.47      
7 A' 1537 1448 14.62      
8 A' 1522 1434 12.76      
9 A' 1456 1372 60.02      
10 A' 1325 1248 328.66      
11 A' 1239 1167 2.11      
12 A' 1111 1047 68.27      
13 A' 1019 960 2.06      
14 A' 877 826 20.71      
15 A' 655 617 7.11      
16 A' 430 406 6.10      
17 A' 293 276 12.37      
18 A" 3227 3041 17.66      
19 A" 3217 3031 2.98      
20 A" 1551 1461 6.35      
21 A" 1538 1450 8.27      
22 A" 1208 1138 1.11      
23 A" 1099 1035 6.93      
24 A" 611 576 6.19      
25 A" 185 174 7.15      
26 A" 157 148 0.57      
27 A" 72 68 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 20249.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 19079.0 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=FULL/6-31G*
ABC
0.33663 0.13975 0.10255

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.134 1.463 0.000
C2 0.000 0.493 0.000
O3 -1.187 0.772 0.000
O4 0.487 -0.776 0.000
C5 -0.525 -1.781 0.000
H6 0.736 2.477 0.000
H7 1.759 1.311 0.883
H8 1.759 1.311 -0.883
H9 -0.003 -2.737 0.000
H10 -1.156 -1.693 0.887
H11 -1.156 -1.693 -0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.49272.42202.33083.64391.08911.09231.09234.35173.99913.9991
C21.49271.21921.35922.33382.11652.13162.13163.23002.62692.6269
O32.42201.21922.27992.63732.57073.12253.12253.70302.61952.6195
O42.33081.35922.27991.42643.26262.59872.59872.02162.08012.0801
C53.64392.33382.63731.42644.44123.94443.94441.08891.09181.0918
H61.08912.11652.57073.26264.44121.78461.78465.26654.66454.6645
H71.09232.13163.12252.59873.94441.78461.76564.50274.18604.5446
H81.09232.13163.12252.59873.94441.78461.76564.50274.54464.1860
H94.35173.23003.70302.02161.08895.26654.50274.50271.79011.7901
H103.99912.62692.61952.08011.09184.66454.18604.54461.79011.7732
H113.99912.62692.61952.08011.09184.66454.54464.18601.79011.7732

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 126.237 C1 C2 O4 109.539
C2 C1 H6 109.129 C2 C1 H7 110.136
C2 C1 H8 110.136 C2 O4 C5 113.799
O3 C2 O4 124.223 O4 C5 H9 106.199
O4 C5 H10 110.686 O4 C5 H11 110.686
H6 C1 H7 109.791 H6 C1 H8 109.791
H7 C1 H8 107.845 H9 C5 H10 110.341
H9 C5 H11 110.341 H10 C5 H11 108.586
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability