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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-169.438436
Energy at 298.15K-169.442130
HF Energy-168.845106
Nuclear repulsion energy70.346053
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 QCISD/6-31G(2df,p)
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' 3202 3034 7.12      
2 A' 3084 2922 2.19      
3 A' 1674 1586 47.90      
4 A' 1488 1410 18.28      
5 A' 1412 1338 12.71      
6 A' 1177 1115 13.17      
7 A' 883 836 12.72      
8 A' 585 554 2.12      
9 A" 3179 3012 4.07      
10 A" 1490 1412 8.17      
11 A" 996 944 1.93      
12 A" 147 140 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 9658.3 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 9150.2 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 QCISD/6-31G(2df,p)
ABC
2.01932 0.38428 0.34355

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.946 -0.571 0.000
N2 0.000 0.577 0.000
O3 1.156 0.229 0.000
H4 -0.407 -1.519 0.000
H5 -1.580 -0.465 0.884
H6 -1.580 -0.465 -0.884

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48782.24881.09071.09241.0924
N21.48781.20692.13572.08872.0887
O32.24881.20692.34502.95712.9571
H41.09072.13572.34501.80741.8074
H51.09242.08872.95711.80741.7670
H61.09242.08872.95711.80741.7670

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.719 N2 C1 H4 110.905
N2 C1 H5 107.104 N2 C1 H6 107.104
H4 C1 H5 111.766 H4 C1 H6 111.766
H5 C1 H6 107.954
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability