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: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-169.794363
Energy at 298.15K-169.798057
HF Energy-169.794363
Nuclear repulsion energy70.135712
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 B3LYP/6-31G*
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' 3158 3032 13.04      
2 A' 3044 2923 1.75      
3 A' 1684 1617 67.65      
4 A' 1481 1422 21.41      
5 A' 1391 1336 19.08      
6 A' 1164 1118 15.43      
7 A' 843 810 23.67      
8 A' 576 553 1.60      
9 A" 3124 3000 5.46      
10 A" 1479 1420 10.08      
11 A" 976 937 1.34      
12 A" 169 163 2.15      

Unscaled Zero Point Vibrational Energy (zpe) 9544.7 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 9165.7 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 B3LYP/6-31G*
ABC
2.02249 0.38108 0.34109

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.949 -0.572 0.000
N2 0.000 0.575 0.000
O3 1.161 0.232 0.000
H4 -0.420 -1.530 0.000
H5 -1.588 -0.458 0.884
H6 -1.588 -0.458 -0.884

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48892.25821.09401.09641.0964
N21.48891.21092.14612.09062.0906
O32.25821.21092.36692.96902.9690
H41.09402.14612.36691.81461.8146
H51.09642.09062.96901.81461.7676
H61.09642.09062.96901.81461.7676

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.131 N2 C1 H4 111.474
N2 C1 H5 106.946 N2 C1 H6 106.946
H4 C1 H5 111.876 H4 C1 H6 111.876
H5 C1 H6 107.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.344      
2 N 0.059      
3 O -0.254      
4 H 0.170      
5 H 0.184      
6 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.954 -1.313 0.000 2.354
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.974 0.331 0.000
y 0.331 -18.824 0.000
z 0.000 0.000 -16.441
Traceless
 xyz
x -0.342 0.331 0.000
y 0.331 -1.617 0.000
z 0.000 0.000 1.958
Polar
3z2-r23.917
x2-y20.850
xy0.331
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.180 0.323 0.000
y 0.323 2.809 0.000
z 0.000 0.000 2.397


<r2> (average value of r2) Å2
<r2> 41.525
(<r2>)1/2 6.444