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

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-229.087497
Energy at 298.15K-229.092327
HF Energy-229.087497
Nuclear repulsion energy122.243168
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' 3171 3060 15.77      
2 A' 3055 2948 13.27      
3 A' 3040 2933 69.70      
4 A' 1808 1744 246.82      
5 A' 1507 1455 8.61      
6 A' 1469 1418 3.56      
7 A' 1402 1353 1.25      
8 A' 1225 1182 164.16      
9 A' 1182 1140 118.94      
10 A' 940 907 20.34      
11 A' 769 742 7.16      
12 A' 293 283 13.59      
13 A" 3134 3025 20.05      
14 A" 1495 1442 6.43      
15 A" 1176 1135 1.48      
16 A" 1036 1000 0.06      
17 A" 351 339 22.14      
18 A" 109 106 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 13580.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 13105.3 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
0.66157 0.23163 0.17732

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 1.357 0.409 0.000
O2 0.000 0.873 0.000
C3 -0.926 -0.090 0.000
O4 -0.719 -1.275 0.000
H5 1.976 1.306 0.000
H6 1.555 -0.194 0.890
H7 1.555 -0.194 -0.890
H8 -1.922 0.381 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43412.33742.67331.08981.09311.09313.2792
O21.43411.33582.26482.02312.08552.08551.9839
C32.33741.33581.20333.22072.63852.63851.1011
O42.67332.26481.20333.73172.67062.67062.0466
H51.08982.02313.22073.73171.79441.79444.0063
H61.09312.08552.63852.67061.79441.77923.6351
H71.09312.08552.63852.67061.79441.77923.6351
H83.27921.98391.10112.04664.00633.63513.6351

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 115.050 O2 C1 H5 105.751
O2 C1 H6 110.492 O2 C1 H7 110.492
O2 C3 O4 126.171 O2 C3 H8 108.610
O4 C3 H8 125.219 H5 C1 H6 110.573
H5 C1 H7 110.573 H6 C1 H7 108.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability