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

using model chemistry: B3PW91/3-21G*

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 B3PW91/3-21G*
 hartrees
Energy at 0K-243.534946
Energy at 298.15K 
HF Energy-243.534946
Nuclear repulsion energy121.589238
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 B3PW91/3-21G*
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' 3203 3073 1.22      
2 A' 3105 2979 0.04      
3 A' 1531 1469 17.34      
4 A' 1420 1363 3.57      
5 A' 1229 1179 89.49      
6 A' 1130 1084 1.75      
7 A' 843 809 5.92      
8 A' 610 585 19.03      
9 A' 547 525 4.22      
10 A" 3239 3108 0.05      
11 A" 1534 1471 0.11      
12 A" 1418 1361 126.65      
13 A" 1083 1039 12.96      
14 A" 433 415 0.34      
15 A" 30 29 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 10676.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 10242.9 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 B3PW91/3-21G*
ABC
0.37680 0.34478 0.18649

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.338 0.000
N2 -0.015 0.170 0.000
H3 1.051 -1.645 0.000
H4 -0.500 -1.666 0.907
H5 -0.500 -1.666 -0.907
O6 0.003 0.739 -1.138
O7 0.003 0.739 1.138

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50811.09251.08771.08772.36862.3686
N21.50812.10462.10392.10391.27281.2728
H31.09252.10461.79721.79722.84202.8420
H41.08772.10391.79721.81503.19662.4670
H51.08772.10391.79721.81502.46703.1966
O62.36861.27282.84203.19662.46702.2768
O72.36861.27282.84202.46703.19662.2768

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 116.543 C1 N2 O7 116.543
N2 C1 H3 106.963 N2 C1 H4 107.178
N2 C1 H5 107.178 H3 C1 H4 111.043
H3 C1 H5 111.043 H4 C1 H5 113.091
O6 N2 O7 126.860
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.448      
2 N 0.233      
3 H 0.279      
4 H 0.268      
5 H 0.268      
6 O -0.300      
7 O -0.300      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.070 -3.544 0.000 3.544
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.256 -0.165 0.000
y -0.165 -21.593 0.000
z 0.000 0.000 -26.043
Traceless
 xyz
x 2.562 -0.165 0.000
y -0.165 2.057 0.000
z 0.000 0.000 -4.619
Polar
3z2-r2-9.238
x2-y20.337
xy-0.165
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.042 -0.014 0.000
y -0.014 3.371 0.000
z 0.000 0.000 4.518


<r2> (average value of r2) Å2
<r2> 66.265
(<r2>)1/2 8.140