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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-48.547935
Energy at 298.15K 
HF Energy-48.051239
Nuclear repulsion energy66.992975
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-121G
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' 3162 3086 7.18      
2 A' 3028 2956 6.25      
3 A' 1499 1463 13.76      
4 A' 1466 1431 1.00      
5 A' 1337 1305 18.14      
6 A' 1168 1140 0.26      
7 A' 867 846 1.07      
8 A' 616 602 30.41      
9 A' 555 542 1.68      
10 A" 3185 3108 1.00      
11 A" 1817 1774 12.93      
12 A" 1513 1477 16.48      
13 A" 1158 1130 2.02      
14 A" 459 448 0.65      
15 A" 23 23 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10926.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 10664.3 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-121G
ABC
0.36529 0.32840 0.17895

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.368 0.000
N2 -0.013 0.153 0.000
H3 1.052 -1.688 0.000
H4 -0.508 -1.695 0.911
H5 -0.508 -1.695 -0.911
O6 0.003 0.764 -1.157
O7 0.003 0.764 1.157

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52141.09721.09441.09442.42562.4256
N21.52142.12722.11912.11911.30851.3085
H31.09722.12721.80681.80682.90732.9073
H41.09442.11911.80681.82213.25312.5231
H51.09442.11911.80681.82212.52313.2531
O62.42561.30852.90733.25312.52312.3144
O72.42561.30852.90732.52313.25312.3144

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 117.804 C1 N2 O7 117.804
N2 C1 H3 107.546 N2 C1 H4 107.083
N2 C1 H5 107.083 H3 C1 H4 111.060
H3 C1 H5 111.060 H4 C1 H5 112.709
O6 N2 O7 124.353
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability