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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-267.227002
Energy at 298.15K-267.233700
HF Energy-266.700068
Nuclear repulsion energy176.639342
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 MP2/6-31G
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' 3231 3092 12.85      
2 A' 3201 3063 7.30      
3 A' 3095 2961 21.62      
4 A' 3088 2955 2.44      
5 A' 1693 1620 119.11      
6 A' 1568 1500 6.26      
7 A' 1553 1486 21.74      
8 A' 1507 1442 7.48      
9 A' 1476 1413 22.45      
10 A' 1280 1225 308.88      
11 A' 1206 1154 10.91      
12 A' 1076 1030 89.94      
13 A' 973 931 24.40      
14 A' 804 770 25.84      
15 A' 637 609 7.67      
16 A' 420 402 4.64      
17 A' 270 259 14.09      
18 A" 3190 3052 22.62      
19 A" 3173 3035 5.64      
20 A" 1556 1489 7.15      
21 A" 1550 1483 8.98      
22 A" 1177 1126 1.10      
23 A" 1116 1068 6.26      
24 A" 583 558 7.66      
25 A" 175 167 12.63      
26 A" 118 112 0.00      
27 A" 82 79 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 19900.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 19040.3 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 MP2/6-31G
ABC
0.32355 0.13246 0.09746

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.114 1.543 0.000
C2 0.000 0.521 0.000
O3 -1.228 0.761 0.000
O4 0.514 -0.778 0.000
C5 -0.498 -1.871 0.000
H6 0.674 2.545 0.000
H7 1.744 1.411 0.887
H8 1.744 1.411 -0.887
H9 0.100 -2.783 0.000
H10 -1.125 -1.802 0.895
H11 -1.125 -1.802 -0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51172.46872.39773.77541.09401.09691.09694.44334.12364.1236
C21.51171.25111.39732.44302.13372.15002.15003.30532.73192.7319
O32.46871.25112.32482.73102.60823.16943.16943.78422.71692.7169
O42.39771.39732.32481.48953.32742.66332.66332.04702.12982.1298
C53.77542.44302.73101.48954.56914.07264.07261.09051.09451.0945
H61.09402.13372.60823.32744.56911.79431.79435.35904.78954.7895
H71.09692.15003.16942.66334.07261.79431.77484.59134.30784.6619
H81.09692.15003.16942.66334.07261.79431.77484.59134.66194.3078
H94.44333.30533.78422.04701.09055.35904.59134.59131.80591.8059
H104.12362.73192.71692.12981.09454.78954.30784.66191.80591.7896
H114.12362.73192.71692.12981.09454.78954.66194.30781.80591.7896

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 126.388 C1 C2 O4 110.955
C2 C1 H6 108.886 C2 C1 H7 110.001
C2 C1 H8 110.001 C2 O4 C5 115.579
O3 C2 O4 122.656 O4 C5 H9 103.936
O4 C5 H10 110.077 O4 C5 H11 110.077
H6 C1 H7 109.970 H6 C1 H8 109.970
H7 C1 H8 108.006 H9 C5 H10 111.476
H9 C5 H11 111.476 H10 C5 H11 109.675
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability