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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-169.101348
Energy at 298.15K-169.104967
HF Energy-168.762141
Nuclear repulsion energy67.264897
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/LANL2DZ
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' 3158 3042 17.87      
2 A' 3024 2912 9.19      
3 A' 1507 1452 19.68      
4 A' 1435 1382 8.52      
5 A' 1286 1238 8.79      
6 A' 1138 1096 16.02      
7 A' 848 817 11.63      
8 A' 534 514 2.02      
9 A" 3152 3035 14.33      
10 A" 1503 1447 15.78      
11 A" 1007 970 2.96      
12 A" 143 137 1.93      

Unscaled Zero Point Vibrational Energy (zpe) 9367.0 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 9021.3 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 MP2/LANL2DZ
ABC
1.84158 0.35434 0.31516

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.011 -0.540 0.000
N2 0.000 0.603 0.000
O3 1.232 0.169 0.000
H4 -0.508 -1.521 0.000
H5 -1.640 -0.410 0.896
H6 -1.640 -0.410 -0.896

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.52582.35171.10301.10261.1026
N21.52581.30582.18482.12592.1259
O32.35171.30582.42613.06323.0632
H41.10302.18482.42611.82151.8215
H51.10262.12593.06321.82151.7927
H61.10262.12593.06321.82151.7927

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.073 N2 C1 H4 111.411
N2 C1 H5 106.861 N2 C1 H6 106.861
H4 C1 H5 111.358 H4 C1 H6 111.358
H5 C1 H6 108.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability