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

using model chemistry: CCSD=FULL/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=FULL/cc-pVTZ
 hartrees
Energy at 0K-228.750795
Energy at 298.15K-228.755793
HF Energy-227.877589
Nuclear repulsion energy123.219246
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=FULL/cc-pVTZ
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' 3197 3031 12.83      
2 A' 3124 2962 42.09      
3 A' 3105 2943 26.65      
4 A' 1855 1758 289.11      
5 A' 1538 1459 10.46      
6 A' 1504 1426 3.84      
7 A' 1445 1370 1.56      
8 A' 1284 1217 292.46      
9 A' 1223 1160 45.36      
10 A' 987 936 25.37      
11 A' 797 756 8.56      
12 A' 316 300 14.42      
13 A" 3167 3003 17.70      
14 A" 1525 1446 8.40      
15 A" 1209 1146 1.80      
16 A" 1094 1037 0.07      
17 A" 343 326 26.90      
18 A" 166 157 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13938.7 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 13215.3 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 CCSD=FULL/cc-pVTZ
ABC
0.67560 0.23450 0.17991

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.345 0.401 0.000
O2 0.000 0.869 0.000
C3 -0.920 -0.086 0.000
O4 -0.711 -1.262 0.000
H5 1.967 1.285 0.000
H6 1.540 -0.198 0.883
H7 1.540 -0.198 -0.883
H8 -1.910 0.367 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.42432.31702.64451.08111.08441.08443.2557
O21.42431.32662.24732.01062.07132.07131.9756
C32.31701.32661.19483.19642.61612.61611.0889
O42.64452.24731.19483.69622.64162.64162.0231
H51.08112.01063.19643.69621.77811.77813.9850
H61.08442.07132.61612.64161.77811.76553.6060
H71.08442.07132.61612.64161.77811.76553.6060
H83.25571.97561.08892.02313.98503.60603.6060

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 114.714 O2 C1 H5 105.925
O2 C1 H6 110.571 O2 C1 H7 110.571
O2 C3 O4 125.991 O2 C3 H8 109.351
O4 C3 H8 124.658 H5 C1 H6 110.387
H5 C1 H7 110.387 H6 C1 H7 108.980
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability