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

using model chemistry: B1B95/3-21G

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 B1B95/3-21G
 hartrees
Energy at 0K-243.530637
Energy at 298.15K 
HF Energy-243.530637
Nuclear repulsion energy122.115368
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 B1B95/3-21G
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' 3225 3085 0.93      
2 A' 3125 2990 0.01      
3 A' 1536 1470 17.45      
4 A' 1427 1365 3.54      
5 A' 1250 1196 86.31      
6 A' 1138 1089 1.64      
7 A' 855 818 4.78      
8 A' 615 588 21.54      
9 A' 551 527 4.65      
10 A" 3263 3121 0.00      
11 A" 1542 1475 0.08      
12 A" 1436 1374 134.80      
13 A" 1088 1041 14.17      
14 A" 429 410 0.28      
15 A" 42 40 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 10760.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 10294.7 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 B1B95/3-21G
ABC
0.38006 0.34787 0.18816

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.332 0.000
N2 -0.015 0.169 0.000
H3 1.048 -1.638 0.000
H4 -0.499 -1.657 0.905
H5 -0.499 -1.657 -0.905
O6 0.003 0.735 -1.133
O7 0.003 0.735 1.133

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50121.08931.08451.08452.35802.3580
N21.50122.09662.09462.09461.26721.2672
H31.08932.09661.79231.79232.83062.8306
H41.08452.09461.79231.81023.18292.4552
H51.08452.09461.79231.81022.45523.1829
O62.35801.26722.83063.18292.45522.2667
O72.35801.26722.83062.45523.18292.2667

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 116.548 C1 N2 O7 116.548
N2 C1 H3 106.989 N2 C1 H4 107.101
N2 C1 H5 107.101 H3 C1 H4 111.075
H3 C1 H5 111.075 H4 C1 H5 113.144
O6 N2 O7 126.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.432      
2 N 0.232      
3 H 0.277      
4 H 0.265      
5 H 0.265      
6 O -0.304      
7 O -0.304      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.068 -3.579 0.000 3.579
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.227 -0.164 0.000
y -0.164 -21.573 0.000
z 0.000 0.000 -26.074
Traceless
 xyz
x 2.597 -0.164 0.000
y -0.164 2.077 0.000
z 0.000 0.000 -4.674
Polar
3z2-r2-9.347
x2-y20.347
xy-0.164
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.026 -0.015 0.000
y -0.015 3.318 0.000
z 0.000 0.000 4.510


<r2> (average value of r2) Å2
<r2> 65.808
(<r2>)1/2 8.112