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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-169.740844
Energy at 298.15K-169.744544
HF Energy-169.740844
Nuclear repulsion energy70.538800
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 B3PW91/6-31G(2df,p)
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' 3156 3034 10.69      
2 A' 3031 2914 1.73      
3 A' 1705 1639 71.42      
4 A' 1445 1389 21.03      
5 A' 1359 1307 21.99      
6 A' 1151 1106 15.96      
7 A' 850 817 26.11      
8 A' 573 551 1.55      
9 A" 3125 3004 2.71      
10 A" 1445 1389 9.65      
11 A" 957 920 0.93      
12 A" 172 165 1.96      

Unscaled Zero Point Vibrational Energy (zpe) 9483.6 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 9117.5 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 B3PW91/6-31G(2df,p)
ABC
2.05177 0.38490 0.34485

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.941 -0.573 0.000
N2 0.000 0.570 0.000
O3 1.153 0.237 0.000
H4 -0.414 -1.531 0.000
H5 -1.582 -0.459 0.881
H6 -1.582 -0.459 -0.881

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48052.24571.09331.09561.0956
N21.48051.20022.14102.08292.0829
O32.24571.20022.36252.95702.9570
H41.09332.14102.36251.81381.8138
H51.09562.08292.95701.81381.7623
H61.09562.08292.95701.81381.7623

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.381 N2 C1 H4 111.691
N2 C1 H5 106.955 N2 C1 H6 106.955
H4 C1 H5 111.922 H4 C1 H6 111.922
H5 C1 H6 107.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.348      
2 N 0.065      
3 O -0.221      
4 H 0.155      
5 H 0.175      
6 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.876 -1.308 0.000 2.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.699 0.339 0.000
y 0.339 -18.617 0.000
z 0.000 0.000 -16.326
Traceless
 xyz
x -0.228 0.339 0.000
y 0.339 -1.605 0.000
z 0.000 0.000 1.833
Polar
3z2-r23.665
x2-y20.918
xy0.339
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.300 0.375 0.000
y 0.375 3.077 0.000
z 0.000 0.000 2.637


<r2> (average value of r2) Å2
<r2> 41.103
(<r2>)1/2 6.411