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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-268.419226
Energy at 298.15K-268.425833
HF Energy-268.419226
Nuclear repulsion energy181.383638
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 TPSSh/6-31G(2df,p)
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' 3170 3059 9.22      
2 A' 3160 3049 18.12      
3 A' 3054 2947 5.20      
4 A' 3049 2942 26.78      
5 A' 1813 1749 205.95      
6 A' 1508 1456 7.18      
7 A' 1483 1431 14.89      
8 A' 1473 1421 10.18      
9 A' 1395 1346 33.70      
10 A' 1265 1220 304.17      
11 A' 1208 1166 1.67      
12 A' 1069 1032 77.47      
13 A' 981 947 1.54      
14 A' 855 825 15.46      
15 A' 636 614 5.50      
16 A' 408 393 6.46      
17 A' 274 264 11.10      
18 A" 3127 3018 23.36      
19 A" 3122 3013 6.47      
20 A" 1492 1440 6.73      
21 A" 1488 1436 4.54      
22 A" 1176 1135 1.39      
23 A" 1061 1024 5.54      
24 A" 600 579 4.63      
25 A" 179 173 5.80      
26 A" 108 104 0.13      
27 A" 34 33 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 19593.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 18907.8 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 TPSSh/6-31G(2df,p)
ABC
0.33919 0.13940 0.10259

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.137 1.471 0.000
C2 0.000 0.494 0.000
O3 -1.180 0.765 0.000
O4 0.480 -0.776 0.000
C5 -0.528 -1.783 0.000
H6 0.741 2.486 0.000
H7 1.766 1.322 0.883
H8 1.766 1.322 -0.883
H9 -0.005 -2.742 0.000
H10 -1.161 -1.695 0.888
H11 -1.161 -1.695 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.49892.42192.34093.65451.09011.09411.09414.36444.01134.0113
C21.49891.21101.35772.33692.12582.14112.14113.23532.63202.6320
O32.42191.21102.26572.63042.57903.12563.12563.69852.61592.6159
O42.34091.35772.26571.42443.27302.61462.61462.02442.07982.0798
C53.65452.33692.63041.42444.45363.96003.96001.09181.09381.0938
H61.09012.12582.57903.27304.45361.78481.78485.28094.67874.6787
H71.09412.14113.12562.61463.96001.78481.76534.52014.20394.5614
H81.09412.14113.12562.61463.96001.78481.76534.52014.56144.2039
H94.36443.23533.69852.02441.09185.28094.52014.52011.79381.7938
H104.01132.63202.61592.07981.09384.67874.20394.56141.79381.7752
H114.01132.63202.61592.07981.09384.67874.56144.20391.79381.7752

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 126.361 C1 C2 O4 109.967
C2 C1 H6 109.373 C2 C1 H7 110.351
C2 C1 H8 110.351 C2 O4 C5 114.254
O3 C2 O4 123.672 O4 C5 H9 106.386
O4 C5 H10 110.676 O4 C5 H11 110.676
H6 C1 H7 109.596 H6 C1 H8 109.596
H7 C1 H8 107.549 H9 C5 H10 110.317
H9 C5 H11 110.317 H10 C5 H11 108.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability