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

using model chemistry: PBE1PBE/6-31G(2df,p)

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 PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-244.767921
Energy at 298.15K 
HF Energy-244.767921
Nuclear repulsion energy125.749304
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 PBE1PBE/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' 3205 3067 1.23      
2 A' 3100 2967 0.43      
3 A' 1495 1431 83.47      
4 A' 1463 1400 27.70      
5 A' 1401 1340 8.56      
6 A' 1139 1090 2.11      
7 A' 961 920 14.33      
8 A' 686 656 19.80      
9 A' 630 603 4.66      
10 A" 3236 3097 0.15      
11 A" 1741 1666 288.63      
12 A" 1457 1395 29.76      
13 A" 1108 1060 6.86      
14 A" 483 462 0.65      
15 A" 23 22 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 11063.8 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 10588.1 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 PBE1PBE/6-31G(2df,p)
ABC
0.41543 0.35725 0.19933

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.312 0.000
N2 -0.010 0.175 0.000
H3 1.048 -1.620 0.000
H4 -0.493 -1.654 0.907
H5 -0.493 -1.654 -0.907
O6 0.000 0.723 -1.080
O7 0.000 0.723 1.080

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48661.09161.08801.08802.30412.3041
N21.48662.08292.09802.09801.21161.2116
H31.09162.08291.78811.78812.78472.7847
H41.08802.09801.78811.81463.13792.4344
H51.08802.09801.78811.81462.43443.1379
O62.30411.21162.78473.13792.43442.1603
O72.30411.21162.78472.43443.13792.1603

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 116.924 C1 N2 O7 116.924
N2 C1 H3 106.779 N2 C1 H4 108.158
N2 C1 H5 108.158 H3 C1 H4 110.246
H3 C1 H5 110.246 H4 C1 H5 113.015
O6 N2 O7 126.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.369      
2 N 0.580      
3 H 0.202      
4 H 0.196      
5 H 0.196      
6 O -0.402      
7 O -0.402      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.045 -3.344 0.000 3.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.107 -0.095 0.000
y -0.095 -21.592 0.000
z 0.000 0.000 -25.600
Traceless
 xyz
x 2.489 -0.095 0.000
y -0.095 1.762 0.000
z 0.000 0.000 -4.250
Polar
3z2-r2-8.500
x2-y20.485
xy-0.095
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.845 -0.027 0.000
y -0.027 4.135 0.000
z 0.000 0.000 4.773


<r2> (average value of r2) Å2
<r2> 63.127
(<r2>)1/2 7.945