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

using model chemistry: HF/CEP-121G*

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 HF/CEP-121G*
 hartrees
Energy at 0K-48.192545
Energy at 298.15K 
HF Energy-48.192545
Nuclear repulsion energy70.966375
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 HF/CEP-121G*
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' 3358 3034 6.66 41.68 0.71 0.83
2 A' 3254 2939 3.85 110.90 0.02 0.05
3 A' 1657 1497 90.27 14.85 0.37 0.54
4 A' 1606 1450 11.97 9.68 0.73 0.85
5 A' 1557 1407 0.83 0.63 0.65 0.79
6 A' 1260 1139 1.12 1.01 0.75 0.86
7 A' 1032 932 2.63 11.54 0.10 0.17
8 A' 727 657 43.08 5.77 0.46 0.63
9 A' 676 611 15.07 1.89 0.68 0.81
10 A" 3393 3065 3.21 37.60 0.75 0.86
11 A" 1814 1639 661.59 1.00 0.75 0.86
12 A" 1598 1443 46.92 8.31 0.75 0.86
13 A" 1222 1104 43.28 3.71 0.75 0.86
14 A" 517 467 1.87 1.13 0.75 0.86
15 A" 37 34 0.05 0.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11853.3 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 10708.3 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 HF/CEP-121G*
ABC
0.42400 0.35630 0.20090

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.317 0.000
N2 -0.011 0.175 0.000
H3 1.041 -1.614 0.000
H4 -0.491 -1.649 0.899
H5 -0.491 -1.649 -0.899
O6 0.001 0.724 -1.069
O7 0.001 0.724 1.069

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49151.08221.07801.07802.30382.3038
N21.49152.07532.09022.09021.20181.2018
H31.08222.07531.77751.77752.77362.7736
H41.07802.09021.77751.79903.12272.4302
H51.07802.09021.77751.79902.43023.1227
O62.30381.20182.77363.12272.43022.1377
O72.30381.20182.77362.43023.12272.1377

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 117.196 C1 N2 O7 117.196
N2 C1 H3 106.388 N2 C1 H4 107.777
N2 C1 H5 107.777 H3 C1 H4 110.740
H3 C1 H5 110.740 H4 C1 H5 113.101
O6 N2 O7 125.585
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.447      
2 N 0.555      
3 H 0.221      
4 H 0.221      
5 H 0.221      
6 O -0.385      
7 O -0.385      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.015 -4.129 0.000 4.129
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.479 -0.070 0.000
y -0.070 -21.966 0.000
z 0.000 0.000 -26.884
Traceless
 xyz
x 2.946 -0.070 0.000
y -0.070 2.216 0.000
z 0.000 0.000 -5.162
Polar
3z2-r2-10.324
x2-y20.487
xy-0.070
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.643 -0.041 0.000
y -0.041 3.704 0.000
z 0.000 0.000 5.164


<r2> (average value of r2) Å2
<r2> 52.966
(<r2>)1/2 7.278