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

using model chemistry: MP2=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-265.869118
Energy at 298.15K-265.875800
HF Energy-265.341822
Nuclear repulsion energy 
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/3-21G*
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' 3221 3053 14.48      
2 A' 3215 3048 5.77      
3 A' 3115 2953 1.61      
4 A' 3105 2944 18.38      
5 A' 1727 1637 90.99      
6 A' 1603 1520 6.88      
7 A' 1573 1491 20.20      
8 A' 1523 1444 4.15      
9 A' 1474 1397 23.68      
10 A' 1257 1192 306.68      
11 A' 1204 1141 11.28      
12 A' 1078 1022 98.62      
13 A' 974 924 2.50      
14 A' 806 764 20.10      
15 A' 633 600 5.65      
16 A' 408 387 5.68      
17 A' 270 256 12.55      
18 A" 3186 3021 4.06      
19 A" 3176 3011 23.94      
20 A" 1588 1506 6.20      
21 A" 1582 1500 7.82      
22 A" 1190 1128 0.35      
23 A" 1125 1067 7.87      
24 A" 596 565 5.52      
25 A" 174 165 10.06      
26 A" 102 97 0.84      
27 A" 91 86 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 19997.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 18957.7 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/3-21G*
ABC
0.32298 0.13480 0.09864

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.154 1.509 0.000
C2 0.000 0.521 0.000
O3 -1.213 0.767 0.000
O4 0.508 -0.780 0.000
C5 -0.541 -1.836 0.000
H6 0.750 2.522 0.000
H7 1.773 1.347 0.886
H8 1.773 1.347 -0.886
H9 0.017 -2.770 0.000
H10 -1.172 -1.754 0.888
H11 -1.172 -1.754 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.51942.48052.37883.74981.09031.09311.09314.42774.10404.1040
C21.51941.23781.39612.41752.13772.14752.14753.29062.70802.7080
O32.48051.23782.31362.68772.63383.16833.16833.74442.67252.6725
O42.37881.39612.31361.48803.31112.62892.62892.04952.13462.1346
C53.74982.41752.68771.48804.54524.03364.03361.08841.09231.0923
H61.09032.13772.63383.31114.54521.79211.79215.34284.77134.7713
H71.09312.14753.16832.62894.03361.79211.77214.56284.27614.6296
H81.09312.14753.16832.62894.03361.79211.77214.56284.62964.2761
H94.42773.29063.74442.04951.08845.34284.56284.56281.79861.7986
H104.10402.70802.67252.13461.09234.77134.27614.62961.79861.7763
H114.10402.70802.67252.13461.09234.77134.62964.27611.79861.7763

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 127.931 C1 C2 O4 109.281
C2 C1 H6 108.886 C2 C1 H7 109.487
C2 C1 H8 109.487 C2 O4 C5 113.871
O3 C2 O4 122.787 O4 C5 H9 104.335
O4 C5 H10 110.703 O4 C5 H11 110.703
H6 C1 H7 110.330 H6 C1 H8 110.330
H7 C1 H8 108.306 H9 C5 H10 111.133
H9 C5 H11 111.133 H10 C5 H11 108.803
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability