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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-244.849570
Energy at 298.15K 
HF Energy-244.849570
Nuclear repulsion energy123.374630
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' 3237 3064 1.16      
2 A' 3127 2960 0.06      
3 A' 1522 1441 19.91      
4 A' 1466 1388 0.34      
5 A' 1368 1295 93.36      
6 A' 1170 1108 1.80      
7 A' 917 868 7.57      
8 A' 664 629 23.23      
9 A' 605 573 4.16      
10 A" 3272 3097 0.00      
11 A" 1592 1507 139.18      
12 A" 1504 1424 88.53      
13 A" 1136 1075 12.94      
14 A" 482 457 0.50      
15 A" 43 40 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 11052.5 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 10462.3 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
0.39525 0.34888 0.19207

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 0.002 -1.326 0.000
N2 -0.012 0.163 0.000
H3 1.045 -1.643 0.000
H4 -0.498 -1.664 0.903
H5 -0.498 -1.664 -0.903
O6 0.002 0.737 -1.110
O7 0.002 0.737 1.110

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48851.09031.08581.08582.34192.3419
N21.48852.09252.09492.09491.24951.2495
H31.09032.09251.78731.78732.82532.8253
H41.08582.09491.78731.80553.17232.4608
H51.08582.09491.78731.80552.46083.1723
O62.34191.24952.82533.17232.46082.2198
O72.34191.24952.82532.46083.17232.2198

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 117.325 C1 N2 O7 117.325
N2 C1 H3 107.463 N2 C1 H4 107.908
N2 C1 H5 107.908 H3 C1 H4 110.439
H3 C1 H5 110.439 H4 C1 H5 112.489
O6 N2 O7 125.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.307      
2 N 0.197      
3 H 0.240      
4 H 0.227      
5 H 0.227      
6 O -0.292      
7 O -0.292      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.067 -3.911 0.000 3.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.500 -0.138 0.000
y -0.138 -22.000 0.000
z 0.000 0.000 -26.929
Traceless
 xyz
x 2.965 -0.138 0.000
y -0.138 2.214 0.000
z 0.000 0.000 -5.179
Polar
3z2-r2-10.358
x2-y20.500
xy-0.138
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.242 -0.036 0.000
y -0.036 3.584 0.000
z 0.000 0.000 4.902


<r2> (average value of r2) Å2
<r2> 65.238
(<r2>)1/2 8.077