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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-169.104502
Energy at 298.15K-169.108120
HF Energy-168.762358
Nuclear repulsion energy67.265619
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/SDD
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' 3157 3047 17.39      
2 A' 3023 2918 9.08      
3 A' 1507 1455 19.71      
4 A' 1435 1385 8.54      
5 A' 1285 1240 8.80      
6 A' 1137 1098 15.98      
7 A' 847 818 11.64      
8 A' 534 515 2.00      
9 A" 3151 3041 14.00      
10 A" 1503 1451 15.83      
11 A" 1007 972 2.97      
12 A" 142 137 1.92      

Unscaled Zero Point Vibrational Energy (zpe) 9363.0 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 9038.1 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 MP2/SDD
ABC
1.84065 0.35442 0.31519

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.011 -0.540 0.000
N2 0.000 0.604 0.000
O3 1.231 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
C11.52602.35151.10291.10251.1025
N21.52601.30582.18472.12592.1259
O32.35151.30582.42533.06293.0629
H41.10292.18472.42531.82161.8216
H51.10252.12593.06291.82161.7927
H61.10252.12593.06291.82161.7927

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.044 N2 C1 H4 111.395
N2 C1 H5 106.854 N2 C1 H6 106.854
H4 C1 H5 111.370 H4 C1 H6 111.370
H5 C1 H6 108.781
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability