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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-265.875811
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 3075 14.48      
2 A' 3215 3070 5.77      
3 A' 3115 2974 1.61      
4 A' 3105 2965 18.38      
5 A' 1727 1649 90.99      
6 A' 1603 1531 6.88      
7 A' 1573 1502 20.20      
8 A' 1523 1454 4.15      
9 A' 1474 1407 23.68      
10 A' 1257 1201 306.68      
11 A' 1204 1150 11.28      
12 A' 1078 1029 98.62      
13 A' 974 930 2.50      
14 A' 806 770 20.10      
15 A' 633 604 5.65      
16 A' 408 390 5.68      
17 A' 270 258 12.55      
18 A" 3186 3042 4.06      
19 A" 3176 3033 23.94      
20 A" 1588 1516 6.20      
21 A" 1582 1510 7.82      
22 A" 1190 1136 0.35      
23 A" 1125 1074 7.87      
24 A" 596 569 5.52      
25 A" 174 166 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 0.9548) Zero Point Vibrational Energy (zpe) 19093.7 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