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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-33.001212
Energy at 298.15K-33.004885
HF Energy-32.516335
Nuclear repulsion energy39.329815
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/CEP-121G*
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' 3196 3045 11.59      
2 A' 3061 2917 4.39      
3 A' 1518 1446 9.19      
4 A' 1482 1412 21.50      
5 A' 1415 1348 28.35      
6 A' 1169 1114 13.53      
7 A' 903 861 10.88      
8 A' 572 545 1.85      
9 A" 3176 3026 7.51      
10 A" 1492 1422 11.88      
11 A" 994 947 4.75      
12 A" 141 135 1.28      

Unscaled Zero Point Vibrational Energy (zpe) 9559.6 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 9108.4 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/CEP-121G*
ABC
1.94099 0.37686 0.33551

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.970 -0.546 0.000
N2 0.000 0.586 0.000
O3 1.183 0.189 0.000
H4 -0.449 -1.507 0.000
H5 -1.599 -0.419 0.887
H6 -1.599 -0.419 -0.887

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.49062.27541.09371.09511.0951
N21.49061.24832.14142.08732.0873
O32.27541.24832.35482.98372.9837
H41.09372.14142.35481.81481.8148
H51.09512.08732.98371.81481.7744
H61.09512.08732.98371.81481.7744

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.053 N2 C1 H4 110.980
N2 C1 H5 106.654 N2 C1 H6 106.654
H4 C1 H5 112.017 H4 C1 H6 112.017
H5 C1 H6 108.221
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability