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: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-169.757827
Energy at 298.15K-169.761441
HF Energy-169.757827
Nuclear repulsion energy69.208218
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 BLYP/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' 3071 3047 15.60      
2 A' 2952 2929 1.80      
3 A' 1564 1552 63.49      
4 A' 1424 1413 22.34      
5 A' 1321 1311 18.89      
6 A' 1106 1098 17.13      
7 A' 754 748 37.40      
8 A' 542 538 0.23      
9 A" 3033 3010 6.12      
10 A" 1424 1413 8.59      
11 A" 919 912 0.93      
12 A" 166 165 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 9138.0 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 9067.6 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 BLYP/6-31G**
ABC
1.96747 0.37086 0.33154

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.962 -0.583 0.000
N2 0.000 0.585 0.000
O3 1.177 0.235 0.000
H4 -0.431 -1.547 0.000
H5 -1.606 -0.466 0.888
H6 -1.606 -0.466 -0.888

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.51392.29021.10031.10321.1032
N21.51391.22812.17602.11502.1150
O32.29021.22812.40083.00433.0043
H41.10032.17602.40081.82721.8272
H51.10322.11503.00431.82721.7755
H61.10322.11503.00431.82721.7755

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.874 N2 C1 H4 111.716
N2 C1 H5 106.777 N2 C1 H6 106.777
H4 C1 H5 112.037 H4 C1 H6 112.037
H5 C1 H6 107.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.184      
2 N 0.039      
3 O -0.234      
4 H 0.115      
5 H 0.132      
6 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.864 -1.265 0.000 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.927 0.335 0.000
y 0.335 -18.859 0.000
z 0.000 0.000 -16.513
Traceless
 xyz
x -0.242 0.335 0.000
y 0.335 -1.639 0.000
z 0.000 0.000 1.880
Polar
3z2-r23.761
x2-y20.931
xy0.335
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.408 0.424 0.000
y 0.424 2.991 0.000
z 0.000 0.000 2.477


<r2> (average value of r2) Å2
<r2> 42.366
(<r2>)1/2 6.509