return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: CCSD(T)=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-169.608235
Energy at 298.15K 
HF Energy-168.895492
Nuclear repulsion energy70.491918
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 CCSD(T)=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)=FULL/aug-cc-pVTZ
ABC
2.03981 0.38565 0.34517

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.948 -0.561 0.000
N2 0.000 0.571 0.000
O3 1.157 0.222 0.000
H4 -0.419 -1.513 0.000
H5 -1.577 -0.448 0.882
H6 -1.577 -0.448 -0.882

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47692.24611.08831.08971.0897
N21.47691.20892.12572.07452.0745
O32.24611.20892.34392.95022.9502
H41.08832.12572.34391.80381.8038
H51.08972.07452.95021.80381.7646
H61.08972.07452.95021.80381.7646

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.124 N2 C1 H4 111.014
N2 C1 H5 106.889 N2 C1 H6 106.889
H4 C1 H5 111.826 H4 C1 H6 111.826
H5 C1 H6 108.135
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability