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: LSDA/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/STO-3G
 hartrees
Energy at 0K-166.667391
Energy at 298.15K-166.670840
HF Energy-166.667391
Nuclear repulsion energy66.882109
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 LSDA/STO-3G
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' 3469 3107 2.58      
2 A' 3260 2920 11.01      
3 A' 1605 1437 3.89      
4 A' 1576 1411 24.43      
5 A' 1395 1250 17.74      
6 A' 1111 995 22.10      
7 A' 817 732 29.59      
8 A' 500 448 0.16      
9 A" 3453 3092 2.44      
10 A" 1580 1415 10.23      
11 A" 930 833 0.40      
12 A" 153 137 2.20      

Unscaled Zero Point Vibrational Energy (zpe) 9924.6 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 8887.5 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 LSDA/STO-3G
ABC
1.76936 0.34996 0.30963

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.000 -0.604 0.000
N2 0.000 0.633 0.000
O3 1.214 0.220 0.000
H4 -0.454 -1.562 0.000
H5 -1.632 -0.503 0.898
H6 -1.632 -0.503 -0.898

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.59022.36261.10261.10341.1034
N21.59021.28262.24092.18232.1823
O32.36261.28262.44103.07173.0717
H41.10262.24092.44101.82121.8212
H51.10342.18233.07171.82121.7969
H61.10342.18233.07171.82121.7969

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 110.196 N2 C1 H4 111.365
N2 C1 H5 106.832 N2 C1 H6 106.832
H4 C1 H5 111.290 H4 C1 H6 111.290
H5 C1 H6 109.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 N -0.025      
3 O -0.056      
4 H 0.105      
5 H 0.114      
6 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.965 -1.197 0.000 1.538
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.198 0.441 0.000
y 0.441 -17.185 0.000
z 0.000 0.000 -15.061
Traceless
 xyz
x -0.076 0.441 0.000
y 0.441 -1.555 0.000
z 0.000 0.000 1.631
Polar
3z2-r23.262
x2-y20.986
xy0.441
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.602 0.325 0.000
y 0.325 1.342 0.000
z 0.000 0.000 1.167


<r2> (average value of r2) Å2
<r2> 43.355
(<r2>)1/2 6.584