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All results from a given calculation for CH3OCHO (methyl formate)

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-228.443835
Energy at 298.15K-228.448783
HF Energy-227.792428
Nuclear repulsion energy122.094206
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 MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3291 3075 12.06      
2 A' 3168 2960 46.94      
3 A' 3155 2948 30.98      
4 A' 1819 1700 231.93      
5 A' 1560 1458 7.95      
6 A' 1516 1416 3.19      
7 A' 1436 1342 1.02      
8 A' 1270 1187 257.46      
9 A' 1219 1139 68.07      
10 A' 973 909 22.75      
11 A' 781 729 9.11      
12 A' 311 291 14.53      
13 A" 3257 3043 18.06      
14 A" 1552 1450 5.79      
15 A" 1209 1130 1.89      
16 A" 1054 985 0.22      
17 A" 352 329 27.27      
18 A" 152 142 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 14036.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 13115.8 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 MP2=FULL/6-31G**
ABC
0.65798 0.23148 0.17691

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.354 0.398 0.000
O2 0.000 0.887 0.000
C3 -0.930 -0.085 0.000
O4 -0.709 -1.279 0.000
H5 1.977 1.283 0.000
H6 1.538 -0.204 0.885
H7 1.538 -0.204 -0.885
H8 -1.923 0.372 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43962.33472.65841.08261.08591.08593.2769
O21.43961.34552.27912.01632.08332.08331.9907
C32.33471.34551.21423.21312.62522.62521.0928
O42.65842.27911.21423.71202.64362.64362.0491
H51.08262.01633.21313.71201.78531.78534.0049
H61.08592.08332.62522.64361.78531.76953.6188
H71.08592.08332.62522.64361.78531.76953.6188
H83.27691.99071.09282.04914.00493.61883.6188

picture of methyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 113.875 O2 C1 H5 105.270
O2 C1 H6 110.376 O2 C1 H7 110.376
O2 C3 O4 125.759 O2 C3 H8 109.022
O4 C3 H8 125.219 H5 C1 H6 110.829
H5 C1 H7 110.829 H6 C1 H7 109.125
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability