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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-169.307033
Energy at 298.15K-169.310750
HF Energy-168.826809
Nuclear repulsion energy70.338012
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 MP3/6-31G*
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' 3221 3023 8.43      
2 A' 3105 2915 1.92      
3 A' 1749 1642 36.49      
4 A' 1521 1427 16.64      
5 A' 1444 1355 16.93      
6 A' 1200 1126 11.71      
7 A' 923 866 9.76      
8 A' 599 562 2.95      
9 A" 3196 3000 5.35      
10 A" 1517 1424 10.38      
11 A" 1016 954 2.07      
12 A" 150 141 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 9820.1 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 9217.1 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 MP3/6-31G*
ABC
2.00851 0.38573 0.34447

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.947 -0.562 0.000
N2 0.000 0.578 0.000
O3 1.157 0.219 0.000
H4 -0.413 -1.515 0.000
H5 -1.581 -0.453 0.885
H6 -1.581 -0.453 -0.885

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48182.24451.09221.09401.0940
N21.48181.21162.13272.08412.0841
O32.24451.21162.33902.95472.9547
H41.09222.13272.33901.80941.8094
H51.09402.08412.95471.80941.7705
H61.09402.08412.95471.80941.7705

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.507 N2 C1 H4 110.998
N2 C1 H5 107.062 N2 C1 H6 107.062
H4 C1 H5 111.719 H4 C1 H6 111.719
H5 C1 H6 108.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability