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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-243.526455
Energy at 298.15K 
HF Energy-243.526455
Nuclear repulsion energy125.425949
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' 3365 3038 1.00 46.47 0.70 0.83
2 A' 3260 2944 0.41 103.04 0.03 0.06
3 A' 1630 1472 18.12 13.69 0.75 0.85
4 A' 1599 1444 1.91 2.69 0.57 0.73
5 A' 1528 1379 63.34 12.05 0.34 0.51
6 A' 1282 1157 2.00 1.04 0.74 0.85
7 A' 989 893 1.39 11.24 0.11 0.21
8 A' 715 646 46.37 6.43 0.53 0.69
9 A' 661 597 12.25 2.73 0.71 0.83
10 A" 3403 3072 0.06 39.93 0.75 0.86
11 A" 1679 1516 280.94 3.24 0.75 0.86
12 A" 1604 1449 222.34 9.20 0.75 0.86
13 A" 1223 1104 79.42 3.52 0.75 0.86
14 A" 520 469 1.54 1.93 0.75 0.86
15 A" 32 29 0.01 0.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11744.7 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 10604.3 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
0.41390 0.35517 0.19821

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 -1.315 0.000
N2 -0.011 0.164 0.000
H3 1.034 -1.627 0.000
H4 -0.493 -1.648 0.893
H5 -0.493 -1.648 -0.893
O6 0.001 0.729 -1.083
O7 0.001 0.729 1.083

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.47901.07901.07411.07412.31372.3137
N21.47902.07352.07702.07701.22211.2221
H31.07902.07351.76981.76982.79122.7912
H41.07412.07701.76981.78673.13122.4357
H51.07412.07701.76981.78672.43573.1312
O62.31371.22212.79123.13122.43572.1668
O72.31371.22212.79122.43573.13122.1668

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 117.548 C1 N2 O7 117.548
N2 C1 H3 107.271 N2 C1 H4 107.826
N2 C1 H5 107.826 H3 C1 H4 110.572
H3 C1 H5 110.572 H4 C1 H5 112.553
O6 N2 O7 124.876
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 -0.250      
2 N 0.330      
3 H 0.241      
4 H 0.233      
5 H 0.233      
6 O -0.393      
7 O -0.393      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.048 -4.570 0.000 4.570
CHELPG -0.268 -4.563 0.000 4.570
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.782 -0.110 0.000
y -0.110 -22.241 0.000
z 0.000 0.000 -28.108
Traceless
 xyz
x 3.393 -0.110 0.000
y -0.110 2.704 0.000
z 0.000 0.000 -6.097
Polar
3z2-r2-12.194
x2-y20.459
xy-0.110
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.140 -0.034 0.000
y -0.034 3.237 0.000
z 0.000 0.000 5.071


<r2> (average value of r2) Å2
<r2> 64.104
(<r2>)1/2 8.006