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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: QCISD/TZVP

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/TZVP
 hartrees
Energy at 0K-169.430622
Energy at 298.15K-169.434317
HF Energy-168.886828
Nuclear repulsion energy70.288196
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/TZVP
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' 3180 3038 11.42      
2 A' 3067 2930 4.39      
3 A' 1641 1568 56.40      
4 A' 1487 1420 19.54      
5 A' 1424 1360 13.64      
6 A' 1179 1126 17.17      
7 A' 879 840 13.26      
8 A' 588 562 1.85      
9 A" 3162 3020 7.72      
10 A" 1487 1420 10.00      
11 A" 1005 960 5.67      
12 A" 144 137 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 9620.8 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9190.8 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/TZVP
ABC
2.02696 0.38267 0.34250

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.948 -0.572 0.000
N2 0.000 0.575 0.000
O3 1.158 0.232 0.000
H4 -0.415 -1.523 0.000
H5 -1.579 -0.463 0.884
H6 -1.579 -0.463 -0.884

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48872.25441.09041.09131.0913
N21.48871.20782.13912.08652.0865
O32.25441.20782.35632.95882.9588
H41.09042.13912.35631.80551.8055
H51.09132.08652.95881.80551.7679
H61.09132.08652.95881.80551.7679

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.034 N2 C1 H4 111.130
N2 C1 H5 106.932 N2 C1 H6 106.932
H4 C1 H5 111.701 H4 C1 H6 111.701
H5 C1 H6 108.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability