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: MP3=FULL/6-311G**

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 MP3=FULL/6-311G**
 hartrees
Energy at 0K-244.531907
Energy at 298.15K 
HF Energy-243.727064
Nuclear repulsion energy125.983230
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 MP3=FULL/6-311G**
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' 3237 3237 2.05      
2 A' 3138 3138 1.07      
3 A' 1543 1543 83.67      
4 A' 1507 1507 14.53      
5 A' 1457 1457 3.38      
6 A' 1171 1171 0.70      
7 A' 1000 1000 9.63      
8 A' 709 709 30.31      
9 A' 634 634 6.52      
10 A" 3265 3265 0.43      
11 A" 1824 1824 354.52      
12 A" 1496 1496 24.37      
13 A" 1147 1147 13.67      
14 A" 504 504 0.80      
15 A" 33 33 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11332.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11332.1 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 MP3=FULL/6-311G**
ABC
0.41874 0.35679 0.19998

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.313 0.000
N2 -0.013 0.174 0.000
H3 1.048 -1.619 0.000
H4 -0.495 -1.653 0.905
H5 -0.495 -1.653 -0.905
O6 0.002 0.724 -1.076
O7 0.002 0.724 1.076

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48771.08981.08641.08642.30372.3037
N21.48772.08352.09482.09481.20791.2079
H31.08982.08351.78901.78902.78192.7819
H41.08642.09481.78901.80933.13302.4339
H51.08642.09481.78901.80932.43393.1330
O62.30371.20792.78193.13302.43392.1511
O72.30371.20792.78192.43393.13302.1511

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 117.055 C1 N2 O7 117.055
N2 C1 H3 106.846 N2 C1 H4 107.917
N2 C1 H5 107.917 H3 C1 H4 110.583
H3 C1 H5 110.583 H4 C1 H5 112.746
O6 N2 O7 125.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability