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

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-228.553030
Energy at 298.15K-228.558008
Nuclear repulsion energy122.473471
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 QCISD/6-311G**
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' 3194 3048 16.45      
2 A' 3095 2953 51.73      
3 A' 3080 2939 33.16      
4 A' 1836 1752 274.62      
5 A' 1526 1456 10.14      
6 A' 1501 1432 2.21      
7 A' 1427 1361 1.26      
8 A' 1264 1206 252.74      
9 A' 1215 1159 85.96      
10 A' 976 931 25.23      
11 A' 789 753 8.24      
12 A' 319 305 13.96      
13 A" 3159 3014 24.72      
14 A" 1511 1442 6.93      
15 A" 1204 1149 2.40      
16 A" 1064 1015 0.33      
17 A" 340 324 27.79      
18 A" 164 156 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13831.2 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 13196.3 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 QCISD/6-311G**
ABC
0.66545 0.23229 0.17800

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.353 0.398 0.000
O2 0.000 0.880 0.000
C3 -0.928 -0.088 0.000
O4 -0.711 -1.269 0.000
H5 1.979 1.290 0.000
H6 1.543 -0.207 0.890
H7 1.543 -0.207 -0.890
H8 -1.926 0.374 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43592.33212.65261.08981.09331.09333.2785
O21.43591.34092.26322.02122.08692.08691.9912
C32.33211.34091.20093.21732.62972.62971.0991
O42.65262.26321.20093.71252.64592.64592.0430
H51.08982.02123.21733.71251.79541.79544.0110
H61.09332.08692.62972.64591.79541.78093.6282
H71.09332.08692.62972.64591.79541.78093.6282
H83.27851.99121.09912.04304.01103.62823.6282

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 114.208 O2 C1 H5 105.487
O2 C1 H6 110.476 O2 C1 H7 110.476
O2 C3 O4 125.755 O2 C3 H8 108.988
O4 C3 H8 125.258 H5 C1 H6 110.650
H5 C1 H7 110.650 H6 C1 H7 109.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability