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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2=FULL/6-31G*

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*
 hartrees
Energy at 0K-169.308084
Energy at 298.15K-169.311769
HF Energy-168.823143
Nuclear repulsion energy69.828170
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*
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' 3228 3041 7.48      
2 A' 3104 2924 1.62      
3 A' 1554 1464 8.52      
4 A' 1511 1424 18.40      
5 A' 1431 1348 25.54      
6 A' 1186 1117 11.40      
7 A' 911 858 13.08      
8 A' 586 552 2.05      
9 A" 3208 3023 3.56      
10 A" 1520 1432 10.30      
11 A" 1010 952 1.93      
12 A" 142 134 1.91      

Unscaled Zero Point Vibrational Energy (zpe) 9694.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 9133.9 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*
ABC
1.97441 0.38213 0.34057

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.960 -0.544 0.000
N2 0.000 0.581 0.000
O3 1.173 0.194 0.000
H4 -0.440 -1.504 0.000
H5 -1.592 -0.425 0.885
H6 -1.592 -0.425 -0.885

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47902.25761.09201.09331.0933
N21.47901.23532.13082.08032.0803
O32.25761.23532.34232.96822.9682
H41.09202.13082.34231.80911.8091
H51.09332.08032.96821.80911.7693
H61.09332.08032.96821.80911.7693

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.254 N2 C1 H4 111.051
N2 C1 H5 106.991 N2 C1 H6 106.991
H4 C1 H5 111.763 H4 C1 H6 111.763
H5 C1 H6 108.030
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability