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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: CCSD/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 CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-169.436799
Energy at 298.15K-169.440504
HF Energy-168.845390
Nuclear repulsion energy70.429738
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/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' 3206 3031 6.85      
2 A' 3088 2920 2.12      
3 A' 1692 1600 42.92      
4 A' 1490 1409 17.45      
5 A' 1416 1339 12.43      
6 A' 1180 1116 12.32      
7 A' 893 844 11.35      
8 A' 588 556 2.35      
9 A" 3182 3009 3.89      
10 A" 1491 1410 8.29      
11 A" 1000 946 1.91      
12 A" 150 142 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 9688.4 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 9160.3 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 CCSD/6-31G(2df,p)
ABC
2.02323 0.38531 0.34446

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.945 -0.570 0.000
N2 0.000 0.577 0.000
O3 1.154 0.229 0.000
H4 -0.407 -1.518 0.000
H5 -1.579 -0.464 0.883
H6 -1.579 -0.464 -0.883

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48562.24551.09051.09211.0921
N21.48561.20532.13422.08702.0870
O32.24551.20532.34282.95422.9542
H41.09052.13422.34281.80661.8066
H51.09212.08702.95421.80661.7662
H61.09212.08702.95421.80661.7662

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.713 N2 C1 H4 110.955
N2 C1 H5 107.134 N2 C1 H6 107.134
H4 C1 H5 111.729 H4 C1 H6 111.729
H5 C1 H6 107.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability