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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-228.412215
Energy at 298.15K-228.417175
HF Energy-227.786810
Nuclear repulsion energy122.194894
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 CCD/6-31G*
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' 3223 3050 14.04      
2 A' 3128 2961 47.67      
3 A' 3107 2941 25.68      
4 A' 1883 1783 270.16      
5 A' 1549 1466 9.28      
6 A' 1517 1436 3.15      
7 A' 1445 1368 2.92      
8 A' 1291 1222 311.82      
9 A' 1230 1164 36.30      
10 A' 986 933 25.50      
11 A' 795 752 10.00      
12 A' 317 301 15.78      
13 A" 3192 3021 19.57      
14 A" 1541 1458 6.49      
15 A" 1208 1144 1.69      
16 A" 1065 1008 0.57      
17 A" 342 324 31.54      
18 A" 160 152 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 13989.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 13241.2 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 CCD/6-31G*
ABC
0.66407 0.23076 0.17701

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.358 0.412 0.000
O2 0.000 0.873 0.000
C3 -0.928 -0.090 0.000
O4 -0.718 -1.278 0.000
H5 1.974 1.312 0.000
H6 1.561 -0.190 0.892
H7 1.561 -0.190 -0.892
H8 -1.929 0.368 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43422.34012.67661.09101.09441.09443.2875
O21.43421.33742.26762.02182.08812.08811.9942
C32.34011.33741.20593.22252.64512.64511.1014
O42.67662.26761.20593.73552.67802.67802.0434
H51.09102.02183.22253.73551.79491.79494.0154
H61.09442.08812.64512.67801.79491.78323.6449
H71.09442.08812.64512.67801.79491.78323.6449
H83.28751.99421.10142.04344.01543.64493.6449

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 115.152 O2 C1 H5 105.582
O2 C1 H6 110.619 O2 C1 H7 110.619
O2 C3 O4 126.070 O2 C3 H8 109.333
O4 C3 H8 124.597 H5 C1 H6 110.438
H5 C1 H7 110.438 H6 C1 H7 109.114
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability