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: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-264.752860
Energy at 298.15K-264.758885
Nuclear repulsion energy173.703749
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 BLYP/STO-3G
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 3386 3133 0.22      
2 A 3363 3111 0.23      
3 A 3347 3097 0.90      
4 A 3301 3054 5.62      
5 A 3206 2966 0.42      
6 A 3152 2916 7.24      
7 A 1787 1653 53.76      
8 A 1616 1495 7.76      
9 A 1613 1493 4.95      
10 A 1604 1484 6.41      
11 A 1587 1468 3.45      
12 A 1505 1393 5.49      
13 A 1481 1370 1.83      
14 A 1208 1118 161.95      
15 A 1175 1087 1.94      
16 A 1125 1041 0.18      
17 A 1065 985 15.97      
18 A 1061 982 12.95      
19 A 980 906 15.53      
20 A 803 743 5.59      
21 A 581 537 3.65      
22 A 513 475 1.37      
23 A 380 352 2.11      
24 A 256 237 5.30      
25 A 173 160 3.77      
26 A 81 75 0.01      
27 A 32 29 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20190.0 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 18679.8 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 BLYP/STO-3G
ABC
0.30167 0.13065 0.09453

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.879 -0.516 0.003
C2 -0.477 0.209 -0.004
O3 -0.238 1.450 -0.001
O4 0.555 -0.824 -0.007
C5 1.912 -0.171 0.005
H6 -2.674 0.220 -0.226
H7 -1.898 -1.329 -0.751
H8 -2.074 -0.959 1.002
H9 2.648 -1.006 -0.001
H10 2.066 0.473 -0.895
H11 2.059 0.454 0.919

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.57742.56072.45323.80611.10791.10901.11034.55324.16424.1577
C21.57741.26431.46082.41942.20822.22292.21943.35352.70742.7107
O32.56071.26432.40892.69262.73883.32323.19083.78982.65702.6676
O42.45321.46082.40891.50593.40142.61302.81962.10092.18002.1804
C53.80612.41942.69261.50594.60894.05354.18381.11321.11701.1170
H61.10792.20822.73883.40144.60891.81041.80505.46674.79384.8759
H71.10902.22293.32322.61304.05351.81041.80024.61934.35684.6509
H81.11032.21943.19082.81964.18381.80501.80024.82814.77344.3690
H94.55323.35353.78982.10091.11325.46674.61934.82811.82341.8233
H104.16422.70742.65702.18001.11704.79384.35684.77341.82341.8136
H114.15772.71072.66762.18041.11704.87594.65094.36901.82331.8136

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 128.272 C1 C2 O4 107.633
C2 C1 H6 109.388 C2 C1 H7 110.464
C2 C1 H8 110.115 C2 O4 C5 109.269
O3 C2 O4 124.094 O4 C5 H9 105.694
O4 C5 H10 111.578 O4 C5 H11 111.601
H6 C1 H7 109.502 H6 C1 H8 108.921
H7 C1 H8 108.422 H9 C5 H10 109.693
H9 C5 H11 109.684 H10 C5 H11 108.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.232      
2 C 0.178      
3 O -0.195      
4 O -0.142      
5 C -0.132      
6 H 0.088      
7 H 0.088      
8 H 0.088      
9 H 0.087      
10 H 0.086      
11 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.328 -0.873 0.024 0.933
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.654 0.783 -0.017
y 0.783 -30.890 -0.016
z -0.017 -0.016 -26.902
Traceless
 xyz
x 5.241 0.783 -0.017
y 0.783 -5.612 -0.016
z -0.017 -0.016 0.371
Polar
3z2-r20.741
x2-y27.236
xy0.783
xz-0.017
yz-0.016


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.744 -0.137 -0.012
y -0.137 3.465 -0.008
z -0.012 -0.008 2.040


<r2> (average value of r2) Å2
<r2> 126.665
(<r2>)1/2 11.255