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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-169.263969
Energy at 298.15K-169.267704
HF Energy-168.827824
Nuclear repulsion energy70.604247
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 CISD/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' 3262 3020 9.52      
2 A' 3147 2913 2.65      
3 A' 1781 1649 51.55      
4 A' 1545 1430 17.93      
5 A' 1474 1364 13.92      
6 A' 1224 1133 12.42      
7 A' 941 871 7.88      
8 A' 605 560 3.27      
9 A" 3237 2996 6.58      
10 A" 1542 1428 10.06      
11 A" 1038 961 2.53      
12 A" 151 140 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 9972.4 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 9232.5 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 CISD/6-31G*
ABC
2.04078 0.38711 0.34637

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.944 -0.563 0.000
N2 0.000 0.572 0.000
O3 1.154 0.224 0.000
H4 -0.412 -1.512 0.000
H5 -1.576 -0.455 0.882
H6 -1.576 -0.455 -0.882

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47652.24071.08831.09021.0902
N21.47651.20492.12502.07752.0775
O32.24071.20492.33842.94762.9476
H41.08832.12502.33841.80251.8025
H51.09022.07752.94761.80251.7645
H61.09022.07752.94761.80251.7645

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.974 N2 C1 H4 110.985
N2 C1 H5 107.118 N2 C1 H6 107.118
H4 C1 H5 111.668 H4 C1 H6 111.668
H5 C1 H6 108.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability