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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-48.828571
Energy at 298.15K 
HF Energy-48.174985
Nuclear repulsion energy68.744944
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 MP2/CEP-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' 3249 3084 8.54      
2 A' 3128 2970 6.76      
3 A' 1503 1427 11.13      
4 A' 1445 1372 0.22      
5 A' 1424 1352 46.88      
6 A' 1158 1100 0.38      
7 A' 927 880 3.07      
8 A' 653 620 28.21      
9 A' 583 553 2.74      
10 A" 3271 3106 2.14      
11 A" 1805 1714 107.36      
12 A" 1496 1420 17.93      
13 A" 1144 1086 1.85      
14 A" 472 448 0.46      
15 A" 29i 27i 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11113.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10551.3 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 MP2/CEP-31G*
ABC
0.38879 0.34355 0.18910

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.338 0.000
N2 -0.013 0.165 0.000
H3 1.059 -1.645 0.000
H4 -0.502 -1.674 0.915
H5 -0.502 -1.674 -0.915
O6 0.002 0.742 -1.119
O7 0.002 0.742 1.119

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50301.10061.09781.09782.36122.3612
N21.50302.10312.11222.11221.25851.2585
H31.10062.10311.80981.80982.83952.8395
H41.09782.11221.80981.83073.19822.4764
H51.09782.11221.80981.83072.47643.1982
O62.36121.25852.83953.19822.47642.2373
O72.36121.25852.83952.47643.19822.2373

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 117.254 C1 N2 O7 117.254
N2 C1 H3 106.735 N2 C1 H4 107.590
N2 C1 H5 107.590 H3 C1 H4 110.821
H3 C1 H5 110.821 H4 C1 H5 112.979
O6 N2 O7 125.456
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability