return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/6-311G**

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/6-311G**
 hartrees
Energy at 0K-266.907879
Energy at 298.15K-266.914958
Nuclear repulsion energy183.564145
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/6-311G**
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' 3303 3001 31.34      
2 A' 3299 2997 12.03      
3 A' 3204 2911 36.79      
4 A' 3192 2900 4.51      
5 A' 1999 1816 362.65      
6 A' 1626 1477 5.99      
7 A' 1612 1464 27.41      
8 A' 1586 1441 13.32      
9 A' 1534 1394 98.75      
10 A' 1413 1283 431.68      
11 A' 1328 1207 5.64      
12 A' 1195 1085 79.87      
13 A' 1072 974 5.45      
14 A' 948 861 19.36      
15 A' 697 633 12.14      
16 A' 455 413 8.01      
17 A' 304 276 13.68      
18 A" 3279 2979 36.07      
19 A" 3255 2957 13.21      
20 A" 1612 1465 7.10      
21 A" 1595 1449 7.51      
22 A" 1288 1171 3.62      
23 A" 1171 1064 10.22      
24 A" 667 606 13.83      
25 A" 188 171 6.45      
26 A" 159 145 2.26      
27 A" 88 80 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 21033.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 19108.5 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/6-311G**
ABC
0.35265 0.14041 0.10429

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.134 1.473 0.000
C2 0.000 0.487 0.000
O3 -1.149 0.768 0.000
O4 0.445 -0.761 0.000
C5 -0.525 -1.793 0.000
H6 0.740 2.479 0.000
H7 1.753 1.313 0.876
H8 1.753 1.313 -0.876
H9 0.029 -2.719 0.000
H10 -1.149 -1.729 0.881
H11 -1.149 -1.729 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50282.38922.33813.66321.08001.08421.08424.33534.03024.0302
C21.50281.18241.32502.33962.12402.12642.12643.20632.64722.6472
O32.38921.18242.20822.63572.54753.07943.07943.68062.64802.6480
O42.33811.32502.20821.41583.25272.60372.60372.00162.06222.0622
C53.66322.33962.63571.41584.45443.94973.94971.07941.08181.0818
H61.08002.12402.54753.25274.45441.77561.77565.24574.69514.6951
H71.08422.12643.07942.60373.94971.77561.75154.47144.20394.5563
H81.08422.12643.07942.60373.94971.77561.75154.47144.55634.2039
H94.33533.20633.68062.00161.07945.24574.47144.47141.77351.7735
H104.03022.64722.64802.06221.08184.69514.20394.55631.77351.7629
H114.03022.64722.64802.06221.08184.69514.55634.20391.77351.7629

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 125.260 C1 C2 O4 111.395
C2 C1 H6 109.559 C2 C1 H7 109.494
C2 C1 H8 109.494 C2 O4 C5 117.181
O3 C2 O4 123.345 O4 C5 H9 105.891
O4 C5 H10 110.603 O4 C5 H11 110.603
H6 C1 H7 110.258 H6 C1 H8 110.258
H7 C1 H8 107.750 H9 C5 H10 110.294
H9 C5 H11 110.294 H10 C5 H11 109.129
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C 0.467      
3 O -0.461      
4 O -0.436      
5 C -0.002      
6 H 0.127      
7 H 0.120      
8 H 0.120      
9 H 0.100      
10 H 0.101      
11 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.677 -1.058 0.000 1.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.894 5.032 0.000
y 5.032 -26.505 0.000
z 0.000 0.000 -28.972
Traceless
 xyz
x -5.156 5.032 0.000
y 5.032 4.428 0.000
z 0.000 0.000 0.728
Polar
3z2-r21.455
x2-y2-6.389
xy5.032
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.639 0.216 0.000
y 0.216 6.037 0.000
z 0.000 0.000 4.310


<r2> (average value of r2) Å2
<r2> 118.367
(<r2>)1/2 10.880