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

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.025465
HF Energy-0.025465
Nuclear repulsion energy92.693736
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 PM3
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' 3149 3067 25.28      
2 A' 3049 2970 28.74      
3 A' 1607 1566 269.84      
4 A' 1380 1345 11.57      
5 A' 1358 1322 26.12      
6 A' 1016 989 46.30      
7 A' 945 921 81.70      
8 A' 623 606 76.64      
9 A' 605 589 77.02      
10 A" 3058 2978 30.44      
11 A" 1903 1854 864.62      
12 A" 1378 1342 10.05      
13 A" 1025 999 1.02      
14 A" 477 465 3.32      
15 A" 12i 12i 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10780.5 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 10500.2 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 PM3
ABC
0.42848 0.33240 0.19397

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 -1.343 0.000
N2 -0.002 0.171 0.000
H3 1.030 -1.729 0.000
H4 -0.500 -1.758 0.889
H5 -0.500 -1.758 -0.889
O6 -0.001 0.756 -1.063
O7 -0.001 0.756 1.063

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.51361.10081.10111.10112.35302.3530
N21.51362.16232.18132.18131.21391.2139
H31.10082.16231.77031.77032.89302.8930
H41.10112.18131.77031.77823.22222.5692
H51.10112.18131.77031.77822.56923.2222
O62.35301.21392.89303.22222.56922.1268
O72.35301.21392.89302.56923.22222.1268

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 118.832 C1 N2 O7 118.832
N2 C1 H3 110.608 N2 C1 H4 112.113
N2 C1 H5 112.113 H3 C1 H4 107.019
H3 C1 H5 107.019 H4 C1 H5 107.692
O6 N2 O7 122.335
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability