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: PBE1PBE/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 PBE1PBE/6-311G*
 hartrees
Energy at 0K-169.643842
Energy at 298.15K-169.647551
HF Energy-169.643842
Nuclear repulsion energy70.819277
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 PBE1PBE/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' 3164 3032 13.78      
2 A' 3045 2919 2.91      
3 A' 1734 1662 85.74      
4 A' 1468 1407 28.48      
5 A' 1382 1324 33.33      
6 A' 1173 1124 18.69      
7 A' 875 839 23.49      
8 A' 588 564 1.68      
9 A" 3138 3008 4.57      
10 A" 1461 1401 15.20      
11 A" 980 940 2.25      
12 A" 161 155 1.96      

Unscaled Zero Point Vibrational Energy (zpe) 9584.2 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 9186.4 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 PBE1PBE/6-311G*
ABC
2.07301 0.38765 0.34763

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.938 -0.571 0.000
N2 0.000 0.566 0.000
O3 1.149 0.238 0.000
H4 -0.411 -1.528 0.000
H5 -1.576 -0.455 0.881
H6 -1.576 -0.455 -0.881

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47312.23761.09231.09401.0940
N21.47311.19462.13302.07432.0743
O32.23761.19462.35582.94672.9467
H41.09232.13302.35581.81201.8120
H51.09402.07432.94671.81201.7613
H61.09402.07432.94671.81201.7613

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.614 N2 C1 H4 111.640
N2 C1 H5 106.881 N2 C1 H6 106.881
H4 C1 H5 111.952 H4 C1 H6 111.952
H5 C1 H6 107.217
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.576      
2 N 0.048      
3 O -0.197      
4 H 0.226      
5 H 0.249      
6 H 0.249      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.980 -1.321 0.000 2.380
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.272 0.334 0.000
y 0.334 -19.126 0.000
z 0.000 0.000 -16.520
Traceless
 xyz
x -0.449 0.334 0.000
y 0.334 -1.730 0.000
z 0.000 0.000 2.179
Polar
3z2-r24.357
x2-y20.854
xy0.334
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.351 0.327 0.000
y 0.327 3.058 0.000
z 0.000 0.000 2.493


<r2> (average value of r2) Å2
<r2> 41.142
(<r2>)1/2 6.414