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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-168.176413
Energy at 298.15K-168.180057
HF Energy-167.861603
Nuclear repulsion energy68.630556
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 CID/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' 3221 3001 7.76      
2 A' 3118 2905 1.39      
3 A' 1579 1471 12.88      
4 A' 1479 1378 1.45      
5 A' 1418 1321 25.38      
6 A' 1171 1091 13.17      
7 A' 822 766 9.32      
8 A' 564 526 2.81      
9 A" 3197 2978 7.12      
10 A" 1576 1468 11.18      
11 A" 1033 962 1.36      
12 A" 132 123 1.77      

Unscaled Zero Point Vibrational Energy (zpe) 9654.6 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 8994.2 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 CID/3-21G
ABC
1.88774 0.36881 0.32763

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.980 -0.567 0.000
N2 0.000 0.604 0.000
O3 1.190 0.201 0.000
H4 -0.429 -1.507 0.000
H5 -1.605 -0.463 0.889
H6 -1.605 -0.463 -0.889

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.52652.30181.08931.09131.0913
N21.52651.25612.15342.12212.1221
O32.30181.25612.35333.00683.0068
H41.08932.15342.35331.80541.8054
H51.09132.12213.00681.80541.7778
H61.09132.12213.00681.80541.7778

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 111.257 N2 C1 H4 109.685
N2 C1 H5 107.145 N2 C1 H6 107.145
H4 C1 H5 111.785 H4 C1 H6 111.785
H5 C1 H6 109.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability