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

using model chemistry: B1B95/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 B1B95/STO-3G
 hartrees
Energy at 0K-264.791174
Energy at 298.15K-264.797600
Nuclear repulsion energy177.070270
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 B1B95/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 3525 3113 0.59      
2 A 3503 3093 0.45      
3 A 3479 3072 0.37      
4 A 3439 3036 2.34      
5 A 3337 2947 1.98      
6 A 3282 2898 4.49      
7 A 1915 1691 66.50      
8 A 1654 1460 9.49      
9 A 1652 1459 6.55      
10 A 1651 1458 5.31      
11 A 1636 1445 4.60      
12 A 1570 1387 2.75      
13 A 1530 1351 8.06      
14 A 1323 1168 212.15      
15 A 1238 1093 0.55      
16 A 1186 1048 0.47      
17 A 1156 1021 6.13      
18 A 1105 975 8.06      
19 A 1045 922 9.31      
20 A 869 767 5.36      
21 A 621 548 5.92      
22 A 553 488 2.68      
23 A 404 357 3.29      
24 A 280 247 6.00      
25 A 187 165 2.23      
26 A 167 148 2.25      
27 A 55 49 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 21180.5 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 18702.4 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 B1B95/STO-3G
ABC
0.31568 0.13548 0.09836

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.849 -0.499 0.000
C2 0.466 0.197 -0.000
O3 0.227 1.418 -0.000
O4 -0.546 -0.803 -0.000
C5 -1.872 -0.171 0.000
H6 2.641 0.260 -0.014
H7 1.960 -1.122 0.898
H8 1.949 -1.145 -0.883
H9 -2.606 -0.995 -0.000
H10 -2.025 0.459 0.897
H11 -2.026 0.460 -0.896

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.54862.51172.41383.73511.09701.09881.09884.48234.09044.0910
C21.54861.24441.42192.36612.17602.18642.18663.29462.66052.6605
O32.51171.24442.35132.63232.67763.20383.21213.72112.60692.6066
O42.41381.42192.35131.46873.35892.68072.66842.06912.14142.1417
C53.73512.36612.63231.46874.53304.04854.04071.10341.10651.1069
H61.09702.17602.67763.35894.53301.79071.79125.39454.75824.7534
H71.09882.18643.20382.68074.04851.79071.78164.65474.28714.6483
H81.09882.18663.21212.66844.04071.79121.78164.64214.64074.2868
H94.48233.29463.72112.06911.10345.39454.65474.64211.80421.8044
H104.09042.66052.60692.14141.10654.75824.28714.64071.80421.7928
H114.09102.66052.60662.14171.10694.75344.64834.28681.80441.7928

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 127.786 C1 C2 O4 108.621
C2 C1 H6 109.488 C2 C1 H7 110.190
C2 C1 H8 110.208 C2 O4 C5 109.871
O3 C2 O4 123.593 O4 C5 H9 106.240
O4 C5 H10 111.743 O4 C5 H11 111.743
H6 C1 H7 109.280 H6 C1 H8 109.321
H7 C1 H8 108.330 H9 C5 H10 109.454
H9 C5 H11 109.436 H10 C5 H11 108.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 C 0.217      
3 O -0.218      
4 O -0.176      
5 C -0.135      
6 H 0.095      
7 H 0.096      
8 H 0.096      
9 H 0.093      
10 H 0.091      
11 H 0.091      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.241 -0.907 0.001 0.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.598 -0.836 0.002
y -0.836 -31.161 -0.001
z 0.002 -0.001 -26.780
Traceless
 xyz
x 5.372 -0.836 0.002
y -0.836 -5.972 -0.001
z 0.002 -0.001 0.600
Polar
3z2-r21.200
x2-y27.563
xy-0.836
xz0.002
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.251 0.119 0.001
y 0.119 3.334 -0.001
z 0.001 -0.001 1.968


<r2> (average value of r2) Å2
<r2> 122.602
(<r2>)1/2 11.073