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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-166.842810
Energy at 298.15K-166.846329
HF Energy-166.638326
Nuclear repulsion energy66.394636
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/STO-3G
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' 3549 3095 1.13      
2 A' 3352 2923 0.40      
3 A' 1689 1473 3.65      
4 A' 1549 1350 0.52      
5 A' 1341 1170 3.66      
6 A' 1174 1023 13.66      
7 A' 944 823 10.91      
8 A' 532 464 0.07      
9 A" 3553 3098 0.30      
10 A" 1688 1472 2.62      
11 A" 1046 912 0.91      
12 A" 132 115 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 10274.4 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 8958.2 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/STO-3G
ABC
1.69307 0.35186 0.30875

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.011 -0.564 0.000
N2 0.000 0.646 0.000
O3 1.229 0.168 0.000
H4 -0.477 -1.533 0.000
H5 -1.646 -0.477 0.900
H6 -1.646 -0.477 -0.900

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.57672.35601.10651.10521.1052
N21.57671.31882.23102.18642.1864
O32.35601.31882.40893.08063.0806
H41.10652.23102.40891.81471.8147
H51.10522.18643.08061.81471.8005
H61.10522.18643.08061.81471.8005

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 108.590 N2 C1 H4 111.295
N2 C1 H5 107.928 N2 C1 H6 107.928
H4 C1 H5 110.264 H4 C1 H6 110.264
H5 C1 H6 109.083
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability