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All results from a given calculation for CH3NO2 (Methane, nitro-)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS Os out of place 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-244.950296
Energy at 298.15K 
HF Energy-244.950296
Nuclear repulsion energy125.363326
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 mPW1PW91/6-31G**
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' 3221 3065 1.31      
2 A' 3116 2965 0.41      
3 A' 1500 1428 57.29      
4 A' 1482 1410 60.24      
5 A' 1418 1349 9.42      
6 A' 1145 1089 2.32      
7 A' 959 913 14.03      
8 A' 682 648 22.08      
9 A' 622 592 5.65      
10 A" 3253 3095 0.22      
11 A" 1744 1660 279.59      
12 A" 1477 1406 30.95      
13 A" 1118 1064 7.15      
14 A" 486 462 0.62      
15 A" 44 42 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 11132.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 10592.8 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 mPW1PW91/6-31G**
ABC
0.41218 0.35580 0.19812

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.314 0.000
N2 -0.012 0.173 0.000
H3 1.047 -1.621 0.000
H4 -0.492 -1.658 0.905
H5 -0.492 -1.658 -0.905
O6 0.001 0.726 -1.085
O7 0.001 0.726 1.085

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48691.09021.08641.08642.31042.3104
N21.48692.08322.09752.09751.21781.2178
H31.09022.08321.78611.78612.78912.7891
H41.08642.09751.78611.80973.14372.4406
H51.08642.09751.78611.80972.44063.1437
O62.31041.21782.78913.14372.44062.1698
O72.31041.21782.78912.44063.14372.1698

picture of Methane, nitro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O6 117.001 C1 N2 O7 117.001
N2 C1 H3 106.864 N2 C1 H4 108.192
N2 C1 H5 108.192 H3 C1 H4 110.288
H3 C1 H5 110.288 H4 C1 H5 112.795
O6 N2 O7 125.967
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 N 0.451      
3 H 0.198      
4 H 0.188      
5 H 0.188      
6 O -0.376      
7 O -0.376      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.052 -3.517 0.000 3.517
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.179 -0.120 0.000
y -0.120 -21.617 0.000
z 0.000 0.000 -25.851
Traceless
 xyz
x 2.555 -0.120 0.000
y -0.120 1.898 0.000
z 0.000 0.000 -4.452
Polar
3z2-r2-8.905
x2-y20.438
xy-0.120
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.533 -0.027 0.000
y -0.027 3.814 0.000
z 0.000 0.000 4.733


<r2> (average value of r2) Å2
<r2> 63.465
(<r2>)1/2 7.966