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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-168.773914
Energy at 298.15K-168.777498
HF Energy-168.773914
Nuclear repulsion energy68.572009
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 B3PW91/3-21G*
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' 3180 3051 7.28      
2 A' 3055 2931 0.22      
3 A' 1519 1457 14.60      
4 A' 1414 1356 8.64      
5 A' 1354 1299 53.89      
6 A' 1124 1079 19.55      
7 A' 762 731 28.05      
8 A' 543 521 1.23      
9 A" 3140 3013 3.12      
10 A" 1510 1448 16.47      
11 A" 967 928 0.09      
12 A" 136 130 2.90      

Unscaled Zero Point Vibrational Energy (zpe) 9351.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8971.5 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 B3PW91/3-21G*
ABC
1.87983 0.36895 0.32748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.979 -0.567 0.000
N2 0.000 0.604 0.000
O3 1.191 0.199 0.000
H4 -0.433 -1.512 0.000
H5 -1.610 -0.452 0.888
H6 -1.610 -0.452 -0.888

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.52572.30081.09171.09551.0955
N21.52571.25782.15902.12012.1201
O32.30081.25782.35803.00933.0093
H41.09172.15902.35801.81601.8160
H51.09552.12013.00931.81601.7767
H61.09552.12013.00931.81601.7767

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 111.138 N2 C1 H4 110.038
N2 C1 H5 106.814 N2 C1 H6 106.814
H4 C1 H5 112.254 H4 C1 H6 112.254
H5 C1 H6 108.376
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.526      
2 N 0.041      
3 O -0.265      
4 H 0.239      
5 H 0.255      
6 H 0.255      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.079 -1.416 0.000 2.515
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.997 0.419 0.000
y 0.419 -18.835 0.000
z 0.000 0.000 -16.365
Traceless
 xyz
x -0.397 0.419 0.000
y 0.419 -1.654 0.000
z 0.000 0.000 2.051
Polar
3z2-r24.102
x2-y20.838
xy0.419
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.967 0.249 0.000
y 0.249 2.404 0.000
z 0.000 0.000 2.087


<r2> (average value of r2) Å2
<r2> 42.604
(<r2>)1/2 6.527