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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-243.666887
Energy at 298.15K 
HF Energy-243.666887
Nuclear repulsion energy127.387296
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/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' 3346 3020 2.50 46.62 0.71 0.83
2 A' 3247 2931 1.98 98.53 0.03 0.05
3 A' 1688 1524 105.68 12.31 0.36 0.52
4 A' 1605 1449 11.48 11.85 0.75 0.86
5 A' 1557 1406 0.19 1.12 0.75 0.86
6 A' 1263 1140 2.29 1.02 0.75 0.86
7 A' 1051 949 5.05 9.98 0.10 0.18
8 A' 744 671 42.44 5.12 0.47 0.64
9 A' 690 623 15.22 2.06 0.67 0.80
10 A" 3381 3052 0.95 40.86 0.75 0.86
11 A" 1879 1696 583.16 0.84 0.75 0.86
12 A" 1591 1436 37.79 10.74 0.75 0.86
13 A" 1224 1105 29.74 3.48 0.75 0.86
14 A" 529 477 1.51 1.03 0.75 0.86
15 A" 20 18 0.02 0.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11908.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 10748.3 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/6-31G**
ABC
0.43027 0.36255 0.20427

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.304 0.000
N2 -0.011 0.174 0.000
H3 1.039 -1.604 0.000
H4 -0.490 -1.639 0.897
H5 -0.490 -1.639 -0.897
O6 0.001 0.718 -1.061
O7 0.001 0.718 1.061

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.47821.08081.07671.07672.28272.2827
N21.47822.06522.07952.07951.19161.1916
H31.08082.06521.77361.77362.75552.7555
H41.07672.07951.77361.79493.10322.4130
H51.07672.07951.77361.79492.41303.1032
O62.28271.19162.75553.10322.41302.1211
O72.28271.19162.75552.41303.10322.1211

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 117.115 C1 N2 O7 117.115
N2 C1 H3 106.586 N2 C1 H4 107.938
N2 C1 H5 107.938 H3 C1 H4 110.589
H3 C1 H5 110.589 H4 C1 H5 112.928
O6 N2 O7 125.744
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.191      
2 N 0.550      
3 H 0.187      
4 H 0.181      
5 H 0.181      
6 O -0.454      
7 O -0.454      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.030 -4.032 0.000 4.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.388 -0.092 0.000
y -0.092 -21.825 0.000
z 0.000 0.000 -26.710
Traceless
 xyz
x 2.879 -0.092 0.000
y -0.092 2.224 0.000
z 0.000 0.000 -5.103
Polar
3z2-r2-10.206
x2-y20.436
xy-0.092
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.450 -0.024 0.000
y -0.024 3.451 0.000
z 0.000 0.000 4.719


<r2> (average value of r2) Å2
<r2> 62.324
(<r2>)1/2 7.895