return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD/aug-cc-pVTZ
 hartrees
Energy at 0K-228.709509
Energy at 298.15K 
HF Energy-227.880327
Nuclear repulsion energy122.737846
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 CCSD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVTZ
ABC
0.66997 0.23274 0.17854

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.352 0.406 0.000
O2 0.000 0.870 0.000
C3 -0.924 -0.087 0.000
O4 -0.715 -1.268 0.000
H5 1.973 1.296 0.000
H6 1.548 -0.195 0.887
H7 1.548 -0.195 -0.887
H8 -1.920 0.367 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43002.32972.65951.08541.08881.08883.2729
O21.43001.33082.25392.01822.07792.07791.9848
C32.32971.33081.19883.21062.62932.62931.0946
O42.65952.25391.19883.71432.65692.65692.0315
H51.08542.01823.21063.71431.78611.78614.0021
H61.08882.07792.62932.65691.78611.77403.6240
H71.08882.07792.62932.65691.78611.77403.6240
H83.27291.98481.09462.03154.00213.62403.6240

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 115.051 O2 C1 H5 105.890
O2 C1 H6 110.438 O2 C1 H7 110.438
O2 C3 O4 125.918 O2 C3 H8 109.451
O4 C3 H8 124.631 H5 C1 H6 110.472
H5 C1 H7 110.472 H6 C1 H7 109.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability