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

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

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/6-31+G**
 hartrees
Energy at 0K-228.459761
Energy at 298.15K-228.464683
HF Energy-227.798870
Nuclear repulsion energy121.784756
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/6-31+G**
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' 3290 3090 9.12      
2 A' 3179 2986 38.78      
3 A' 3151 2959 27.54      
4 A' 1778 1670 306.28      
5 A' 1550 1455 8.96      
6 A' 1508 1416 3.87      
7 A' 1423 1336 1.01      
8 A' 1261 1184 244.78      
9 A' 1208 1134 97.78      
10 A' 954 896 29.35      
11 A' 771 724 8.21      
12 A' 304 286 14.59      
13 A" 3255 3057 14.60      
14 A" 1538 1445 8.03      
15 A" 1200 1127 2.37      
16 A" 1045 981 0.05      
17 A" 346 325 30.51      
18 A" 151 142 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 13955.1 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 13106.7 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/6-31+G**
ABC
0.65872 0.22909 0.17559

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.362 0.405 0.000
O2 0.000 0.884 0.000
C3 -0.934 -0.086 0.000
O4 -0.714 -1.283 0.000
H5 1.975 1.297 0.000
H6 1.547 -0.194 0.887
H7 1.547 -0.194 -0.887
H8 -1.926 0.369 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44412.34802.67571.08261.08601.08603.2888
O21.44411.34672.28222.01762.08362.08361.9942
C32.34801.34671.21773.22102.63662.63661.0917
O42.67572.28221.21773.72682.66132.66132.0497
H51.08262.01763.22103.72681.78741.78744.0102
H61.08602.08362.63662.66131.78741.77413.6284
H71.08602.08362.63662.66131.78741.77413.6284
H83.28881.99421.09172.04974.01023.62843.6284

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 114.519 O2 C1 H5 105.073
O2 C1 H6 110.073 O2 C1 H7 110.073
O2 C3 O4 125.661 O2 C3 H8 109.288
O4 C3 H8 125.052 H5 C1 H6 111.009
H5 C1 H7 111.009 H6 C1 H7 109.531
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability