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

using model chemistry: B3PW91/6-31G(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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-244.938867
Energy at 298.15K 
HF Energy-244.938867
Nuclear repulsion energy125.365592
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 B3PW91/6-31G(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' 3191 3068 1.52      
2 A' 3088 2969 0.65      
3 A' 1475 1418 42.63      
4 A' 1454 1398 63.53      
5 A' 1397 1343 11.50      
6 A' 1134 1090 1.88      
7 A' 945 908 15.16      
8 A' 675 649 18.00      
9 A' 623 599 4.54      
10 A" 3222 3098 0.37      
11 A" 1708 1642 271.96      
12 A" 1456 1399 30.48      
13 A" 1103 1061 7.06      
14 A" 478 460 0.64      
15 A" 23 22 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10985.1 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 10561.0 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 B3PW91/6-31G(2df,p)
ABC
0.41306 0.35476 0.19801

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.317 0.000
N2 -0.010 0.175 0.000
H3 1.048 -1.625 0.000
H4 -0.493 -1.659 0.907
H5 -0.493 -1.659 -0.907
O6 0.000 0.726 -1.084
O7 0.000 0.726 1.084

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49191.09171.08801.08802.31242.3124
N21.49192.08782.10282.10281.21561.2156
H31.09172.08781.78841.78842.79272.7927
H41.08802.10281.78841.81413.14592.4424
H51.08802.10281.78841.81412.44243.1459
O62.31241.21562.79273.14592.44242.1670
O72.31241.21562.79272.44243.14592.1670

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 116.949 C1 N2 O7 116.949
N2 C1 H3 106.796 N2 C1 H4 108.165
N2 C1 H5 108.165 H3 C1 H4 110.266
H3 C1 H5 110.266 H4 C1 H5 112.947
O6 N2 O7 126.083
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.370      
2 N 0.571      
3 H 0.200      
4 H 0.194      
5 H 0.194      
6 O -0.395      
7 O -0.395      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.043 -3.342 0.000 3.342
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.072 -0.093 0.000
y -0.093 -21.552 0.000
z 0.000 0.000 -25.574
Traceless
 xyz
x 2.491 -0.093 0.000
y -0.093 1.771 0.000
z 0.000 0.000 -4.262
Polar
3z2-r2-8.524
x2-y20.480
xy-0.093
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.854 -0.026 0.000
y -0.026 4.179 0.000
z 0.000 0.000 4.795


<r2> (average value of r2) Å2
<r2> 63.414
(<r2>)1/2 7.963