return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B1B95/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-245.028795
Energy at 298.15K 
HF Energy-245.028795
Nuclear repulsion energy126.098533
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/Def2TZVPP
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' 3204 3204 1.57      
2 A' 3107 3107 0.40      
3 A' 1486 1486 55.31      
4 A' 1467 1467 54.53      
5 A' 1409 1409 11.51      
6 A' 1141 1141 1.49      
7 A' 959 959 13.43      
8 A' 681 681 20.05      
9 A' 629 629 5.42      
10 A" 3237 3237 0.14      
11 A" 1694 1694 356.92      
12 A" 1465 1465 36.16      
13 A" 1113 1113 10.31      
14 A" 481 481 0.76      
15 A" 32 32 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11051.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11051.5 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/Def2TZVPP
ABC
0.41892 0.35798 0.20028

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.311 0.000
N2 -0.010 0.173 0.000
H3 1.043 -1.614 0.000
H4 -0.490 -1.651 0.902
H5 -0.490 -1.651 -0.902
O6 0.000 0.723 -1.076
O7 0.000 0.723 1.076

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48461.08551.08161.08162.30122.3012
N21.48462.07402.09142.09141.20811.2081
H31.08552.07401.77881.77882.77592.7759
H41.08162.09141.77881.80433.12892.4307
H51.08162.09141.77881.80432.43073.1289
O62.30121.20812.77593.12892.43072.1515
O72.30121.20812.77592.43073.12892.1515

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 117.064 C1 N2 O7 117.064
N2 C1 H3 106.575 N2 C1 H4 108.147
N2 C1 H5 108.147 H3 C1 H4 110.335
H3 C1 H5 110.335 H4 C1 H5 113.045
O6 N2 O7 125.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.228      
2 N 0.414      
3 H 0.141      
4 H 0.145      
5 H 0.145      
6 O -0.308      
7 O -0.308      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.030 -3.558 0.000 3.559
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.426 -0.083 0.000
y -0.083 -22.015 0.000
z 0.000 0.000 -26.308
Traceless
 xyz
x 2.735 -0.083 0.000
y -0.083 1.852 0.000
z 0.000 0.000 -4.587
Polar
3z2-r2-9.173
x2-y20.589
xy-0.083
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.042 -0.037 0.000
y -0.037 4.499 0.000
z 0.000 0.000 5.328


<r2> (average value of r2) Å2
<r2> 63.183
(<r2>)1/2 7.949