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

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-51.240008
Energy at 298.15K-51.246954
Nuclear repulsion energy100.410861
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 HF/CEP-121G
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' 3336 3044 25.64      
2 A' 3316 3026 15.39      
3 A' 3195 2915 39.32      
4 A' 3187 2908 7.01      
5 A' 1840 1679 312.28      
6 A' 1633 1490 8.99      
7 A' 1611 1470 28.67      
8 A' 1598 1458 18.79      
9 A' 1559 1423 37.28      
10 A' 1402 1279 446.44      
11 A' 1306 1192 0.28      
12 A' 1175 1072 93.93      
13 A' 1063 970 27.26      
14 A' 887 809 21.00      
15 A' 670 612 16.56      
16 A' 435 397 7.87      
17 A' 277 253 18.49      
18 A" 3302 3013 38.20      
19 A" 3277 2990 15.26      
20 A" 1622 1480 9.78      
21 A" 1613 1472 11.67      
22 A" 1270 1159 3.62      
23 A" 1192 1087 11.63      
24 A" 639 583 19.69      
25 A" 184 168 14.51      
26 A" 129 117 1.17      
27 A" 90 82 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 20903.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 19074.1 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 HF/CEP-121G
ABC
0.33797 0.13372 0.09934

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.132 1.523 0.000
C2 0.000 0.527 0.000
O3 -1.194 0.802 0.000
O4 0.446 -0.758 0.000
C5 -0.518 -1.848 0.000
H6 0.730 2.525 0.000
H7 1.752 1.370 0.876
H8 1.752 1.370 -0.876
H9 0.076 -2.747 0.000
H10 -1.139 -1.794 0.884
H11 -1.139 -1.794 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50822.43532.38183.75321.07971.08371.08374.39924.11614.1161
C21.50821.22521.35992.43032.12782.13262.13263.27492.73192.7319
O32.43531.22522.26342.73422.58313.12553.12553.76942.74232.7423
O42.38181.35992.26341.45553.29532.64582.64582.02372.09032.0903
C53.75322.43032.73421.45554.54764.03444.03441.07821.08191.0819
H61.07972.12782.58313.29534.54761.77341.77345.31304.78844.7884
H71.08372.13263.12552.64584.03441.77341.75134.53114.28604.6333
H81.08372.13263.12552.64584.03441.77341.75134.53114.63334.2860
H94.39923.27493.76942.02371.07825.31304.53114.53111.78011.7801
H104.11612.73192.74232.09031.08194.78844.28604.63331.78011.7685
H114.11612.73192.74232.09031.08194.78844.63334.28601.78011.7685

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 125.669 C1 C2 O4 112.192
C2 C1 H6 109.497 C2 C1 H7 109.645
C2 C1 H8 109.645 C2 O4 C5 119.319
O3 C2 O4 122.139 O4 C5 H9 105.036
O4 C5 H10 110.060 O4 C5 H11 110.060
H6 C1 H7 110.115 H6 C1 H8 110.115
H7 C1 H8 107.801 H9 C5 H10 110.985
H9 C5 H11 110.985 H10 C5 H11 109.634
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.588      
2 C 0.422      
3 O -0.325      
4 O -0.387      
5 C -0.200      
6 H 0.194      
7 H 0.184      
8 H 0.184      
9 H 0.174      
10 H 0.171      
11 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.871 -1.182 0.000 2.214
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.335 -3.887 0.000
y -3.887 -33.627 0.000
z 0.000 0.000 -29.415
Traceless
 xyz
x 0.186 -3.887 0.000
y -3.887 -3.251 0.000
z 0.000 0.000 3.066
Polar
3z2-r26.131
x2-y22.292
xy-3.887
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.056 0.006 0.000
y 0.006 6.887 0.000
z 0.000 0.000 4.208


<r2> (average value of r2) Å2
<r2> 101.262
(<r2>)1/2 10.063