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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-32.436641
Energy at 298.15K-32.440468
HF Energy-32.436641
Nuclear repulsion energy39.729158
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 HF/CEP-121G
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' 3298 3010 17.29      
2 A' 3171 2894 9.71      
3 A' 1797 1640 65.01      
4 A' 1602 1462 35.85      
5 A' 1555 1419 7.96      
6 A' 1282 1170 13.04      
7 A' 1001 913 0.10      
8 A' 601 548 6.71      
9 A" 3282 2995 14.34      
10 A" 1598 1458 17.94      
11 A" 1119 1021 5.21      
12 A" 178 163 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 10241.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 9345.1 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 HF/CEP-121G
ABC
2.08125 0.37579 0.33816

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.962 -0.561 0.000
N2 0.000 0.564 0.000
O3 1.175 0.230 0.000
H4 -0.450 -1.515 0.000
H5 -1.588 -0.451 0.878
H6 -1.588 -0.451 -0.878

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48032.27851.08301.08371.0837
N21.48031.22142.12742.07862.0786
O32.27851.22142.38442.97732.9773
H41.08302.12742.38441.78861.7886
H51.08372.07862.97731.78861.7560
H61.08372.07862.97731.78861.7560

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 114.658 N2 C1 H4 111.242
N2 C1 H5 107.316 N2 C1 H6 107.316
H4 C1 H5 111.275 H4 C1 H6 111.275
H5 C1 H6 108.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.441      
2 N 0.130      
3 O -0.252      
4 H 0.181      
5 H 0.191      
6 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.728 -1.747 0.000 3.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.248 0.497 0.000
y 0.497 -19.438 0.000
z 0.000 0.000 -16.695
Traceless
 xyz
x -1.181 0.497 0.000
y 0.497 -1.467 0.000
z 0.000 0.000 2.648
Polar
3z2-r25.297
x2-y20.190
xy0.497
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.417 0.035 0.000
y 0.035 2.566 0.000
z 0.000 0.000 2.374


<r2> (average value of r2) Å2
<r2> 36.167
(<r2>)1/2 6.014