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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-169.438604
Energy at 298.15K-169.442308
HF Energy-168.843561
Nuclear repulsion energy70.328949
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=FULL/6-31G(2df,p)
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' 3237 3042 5.21      
2 A' 3108 2921 1.18      
3 A' 1569 1475 13.64      
4 A' 1491 1402 20.68      
5 A' 1405 1320 21.78      
6 A' 1178 1107 11.14      
7 A' 910 855 14.38      
8 A' 585 550 2.07      
9 A" 3218 3024 1.33      
10 A" 1496 1406 9.52      
11 A" 1000 940 1.41      
12 A" 150 141 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 9673.2 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 9091.8 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=FULL/6-31G(2df,p)
ABC
2.01095 0.38645 0.34483

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.951 -0.550 0.000
N2 0.000 0.576 0.000
O3 1.162 0.205 0.000
H4 -0.429 -1.505 0.000
H5 -1.583 -0.435 0.879
H6 -1.583 -0.435 -0.879

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47322.24361.08821.08941.0894
N21.47321.21992.12422.07382.0738
O32.24361.21992.33562.95292.9529
H41.08822.12422.33561.80311.8031
H51.08942.07382.95291.80311.7588
H61.08942.07382.95291.80311.7588

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.493 N2 C1 H4 111.164
N2 C1 H5 107.093 N2 C1 H6 107.093
H4 C1 H5 111.786 H4 C1 H6 111.786
H5 C1 H6 107.660
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability