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: PBEPBEultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-311G*
 hartrees
Energy at 0K-169.648422
Energy at 298.15K-169.652048
HF Energy-169.648422
Nuclear repulsion energy69.890764
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 PBEPBEultrafine/6-311G*
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' 3068 3036 16.90      
2 A' 2949 2918 3.36      
3 A' 1601 1585 82.11      
4 A' 1414 1399 30.45      
5 A' 1314 1300 39.05      
6 A' 1114 1102 21.45      
7 A' 785 777 40.53      
8 A' 557 552 0.26      
9 A" 3039 3008 4.28      
10 A" 1407 1393 14.16      
11 A" 927 917 1.85      
12 A" 157 156 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 9166.4 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 9071.1 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 PBEPBEultrafine/6-311G*
ABC
2.01798 0.37758 0.33826

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.951 -0.579 0.000
N2 0.000 0.574 0.000
O3 1.165 0.239 0.000
H4 -0.424 -1.545 0.000
H5 -1.596 -0.456 0.886
H6 -1.596 -0.456 -0.886

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.49472.26851.10041.10251.1025
N21.49471.21252.16132.09592.0959
O32.26851.21252.38892.98152.9815
H41.10042.16132.38891.82841.8284
H51.10252.09592.98151.82841.7718
H61.10252.09592.98151.82841.7718

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.438 N2 C1 H4 111.883
N2 C1 H5 106.626 N2 C1 H6 106.626
H4 C1 H5 112.193 H4 C1 H6 112.193
H5 C1 H6 106.938
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.556      
2 N 0.038      
3 O -0.173      
4 H 0.212      
5 H 0.240      
6 H 0.240      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.880 -1.242 0.000 2.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.320 0.313 0.000
y 0.313 -19.319 0.000
z 0.000 0.000 -16.665
Traceless
 xyz
x -0.328 0.313 0.000
y 0.313 -1.826 0.000
z 0.000 0.000 2.154
Polar
3z2-r24.308
x2-y20.999
xy0.313
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.649 0.454 0.000
y 0.454 3.331 0.000
z 0.000 0.000 2.598


<r2> (average value of r2) Å2
<r2> 42.011
(<r2>)1/2 6.482