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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-168.210832
Energy at 298.15K-168.214418
HF Energy-167.858803
Nuclear repulsion energy67.968052
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 CCD/3-21G*
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' 3155 3018 9.09      
2 A' 3052 2919 2.17      
3 A' 1550 1483 12.51      
4 A' 1437 1375 4.24      
5 A' 1342 1284 15.07      
6 A' 1134 1085 11.89      
7 A' 786 752 12.51      
8 A' 549 526 1.96      
9 A" 3131 2995 8.84      
10 A" 1549 1481 9.57      
11 A" 1006 962 1.28      
12 A" 123 117 1.72      

Unscaled Zero Point Vibrational Energy (zpe) 9407.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 8998.2 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 CCD/3-21G*
ABC
1.83165 0.36350 0.32197

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.990 -0.567 0.000
N2 0.000 0.614 0.000
O3 1.201 0.192 0.000
H4 -0.436 -1.511 0.000
H5 -1.617 -0.463 0.894
H6 -1.617 -0.463 -0.894

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.54152.31941.09461.09651.0965
N21.54151.27362.16952.13842.1384
O32.31941.27362.36233.02813.0281
H41.09462.16952.36231.81431.8143
H51.09652.13843.02811.81431.7879
H61.09652.13843.02811.81431.7879

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 110.595 N2 C1 H4 109.607
N2 C1 H5 107.105 N2 C1 H6 107.105
H4 C1 H5 111.792 H4 C1 H6 111.792
H5 C1 H6 109.224
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability