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: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-244.768182
Energy at 298.15K 
HF Energy-244.768182
Nuclear repulsion energy125.359386
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 HSEh1PBE/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' 3221 3063 1.43      
2 A' 3120 2967 0.40      
3 A' 1506 1432 36.60      
4 A' 1486 1414 80.38      
5 A' 1426 1356 10.48      
6 A' 1150 1094 2.23      
7 A' 961 914 13.98      
8 A' 683 650 21.75      
9 A' 623 592 5.83      
10 A" 3254 3095 0.36      
11 A" 1748 1662 278.19      
12 A" 1488 1415 31.34      
13 A" 1124 1069 7.37      
14 A" 489 465 0.58      
15 A" 43 41 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 11160.7 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 10613.8 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 HSEh1PBE/6-31G*
ABC
0.41203 0.35597 0.19817

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.314 0.000
N2 -0.012 0.173 0.000
H3 1.049 -1.620 0.000
H4 -0.493 -1.658 0.906
H5 -0.493 -1.658 -0.906
O6 0.001 0.725 -1.085
O7 0.001 0.725 1.085

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48661.09221.08831.08832.30972.3097
N21.48662.08402.09912.09911.21761.2176
H31.09222.08401.78941.78942.78892.7889
H41.08832.09911.78941.81243.14512.4410
H51.08832.09911.78941.81242.44103.1451
O62.30971.21762.78893.14512.44102.1699
O72.30971.21762.78892.44103.14512.1699

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 116.974 C1 N2 O7 116.974
N2 C1 H3 106.827 N2 C1 H4 108.222
N2 C1 H5 108.222 H3 C1 H4 110.298
H3 C1 H5 110.298 H4 C1 H5 112.752
O6 N2 O7 126.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.405      
2 N 0.461      
3 H 0.235      
4 H 0.227      
5 H 0.227      
6 O -0.373      
7 O -0.373      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.052 -3.482 0.000 3.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.221 -0.119 0.000
y -0.119 -21.717 0.000
z 0.000 0.000 -25.888
Traceless
 xyz
x 2.582 -0.119 0.000
y -0.119 1.838 0.000
z 0.000 0.000 -4.419
Polar
3z2-r2-8.839
x2-y20.496
xy-0.119
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.513 -0.028 0.000
y -0.028 3.783 0.000
z 0.000 0.000 4.714


<r2> (average value of r2) Å2
<r2> 63.501
(<r2>)1/2 7.969