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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-266.821425
Energy at 298.15K-266.827873
Nuclear repulsion energy176.548699
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/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' 3103 3086 8.61      
2 A' 3076 3059 5.24      
3 A' 3002 2986 2.10      
4 A' 2988 2972 38.86      
5 A' 1697 1688 116.98      
6 A' 1519 1511 6.26      
7 A' 1496 1488 19.97      
8 A' 1409 1402 25.36      
9 A' 1398 1391 24.94      
10 A' 1164 1157 187.03      
11 A' 1144 1137 27.84      
12 A' 994 988 124.93      
13 A' 924 919 18.26      
14 A' 752 748 22.84      
15 A' 603 599 1.73      
16 A' 409 407 9.55      
17 A' 288 286 10.91      
18 A" 3063 3046 28.55      
19 A" 3054 3038 5.54      
20 A" 1529 1521 5.23      
21 A" 1508 1500 9.01      
22 A" 1109 1103 0.10      
23 A" 1061 1055 6.87      
24 A" 565 562 2.03      
25 A" 167 167 7.82      
26 A" 88 88 0.15      
27 A" 34 33 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 19072.6 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 18967.7 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 BLYP/3-21G
ABC
0.31551 0.13253 0.09679

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.209 1.466 0.000
C2 0.000 0.532 0.000
O3 -1.197 0.843 0.000
O4 0.477 -0.796 0.000
C5 -0.589 -1.853 0.000
H6 0.864 2.507 0.000
H7 1.827 1.268 0.889
H8 1.827 1.268 -0.889
H9 -1.573 -1.364 0.000
H10 -0.450 -2.465 -0.903
H11 -0.450 -2.465 0.903

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.52722.48512.37793.77421.09671.10141.10143.96844.36084.3608
C21.52721.23701.41182.45682.15562.16102.16102.46413.16233.1623
O32.48511.23702.34322.76392.64923.18093.18092.23933.50943.5094
O42.37791.41182.34321.50033.32632.62192.62192.12692.11112.1111
C53.77422.45682.76391.50034.59574.04524.04521.09901.09931.0993
H61.09672.15562.64923.32634.59571.80421.80424.57475.22135.2213
H71.10142.16103.18092.62194.04521.80421.77874.39074.72514.3721
H81.10142.16103.18092.62194.04521.80421.77874.39074.37214.7251
H93.96842.46412.23932.12691.09904.57474.39074.39071.81301.8130
H104.36083.16233.50942.11111.09935.22134.72514.37211.81301.8053
H114.36083.16233.50942.11111.09935.22134.37214.72511.81301.8053

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 127.758 C1 C2 O4 107.953
C2 C1 H6 109.384 C2 C1 H7 109.528
C2 C1 H8 109.528 C2 O4 C5 115.025
O3 C2 O4 124.289 O4 C5 H9 108.844
O4 C5 H10 107.601 O4 C5 H11 107.601
H6 C1 H7 110.338 H6 C1 H8 110.338
H7 C1 H8 107.701 H9 C5 H10 111.128
H9 C5 H11 111.128 H10 C5 H11 110.396
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.587      
2 C 0.563      
3 O -0.438      
4 O -0.441      
5 C -0.346      
6 H 0.208      
7 H 0.217      
8 H 0.217      
9 H 0.211      
10 H 0.197      
11 H 0.197      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.134 -0.896 0.000 1.446
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.507 -2.444 0.000
y -2.444 -30.867 0.000
z 0.000 0.000 -29.215
Traceless
 xyz
x -0.467 -2.444 0.000
y -2.444 -1.005 0.000
z 0.000 0.000 1.472
Polar
3z2-r22.944
x2-y20.359
xy-2.444
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 123.423
(<r2>)1/2 11.110