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

using model chemistry: QCISD/6-31G(2df,p)

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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-244.511011
Energy at 298.15K 
HF Energy-243.686966
Nuclear repulsion energy125.365587
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 QCISD/6-31G(2df,p)
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' 3231 3061 1.06      
2 A' 3129 2965 1.14      
3 A' 1503 1424 15.17      
4 A' 1483 1405 69.22      
5 A' 1441 1366 3.13      
6 A' 1164 1103 0.94      
7 A' 958 908 6.12      
8 A' 684 648 26.29      
9 A' 625 592 5.71      
10 A" 3258 3086 0.15      
11 A" 1692 1603 294.29      
12 A" 1492 1413 35.76      
13 A" 1131 1071 13.27      
14 A" 484 459 0.78      
15 A" 27i 25i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11123.7 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 10538.6 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 QCISD/6-31G(2df,p)
ABC
0.41197 0.35579 0.19809

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.025 -1.307 0.000
N2 -0.110 0.180 0.000
H3 1.092 -1.534 0.000
H4 -0.441 -1.686 0.905
H5 -0.441 -1.686 -0.905
O6 0.025 0.718 -1.079
O7 0.025 0.718 1.079

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49291.09011.08641.08642.29412.2941
N21.49292.09342.09992.09991.21291.2129
H31.09012.09341.78601.78602.71522.7152
H41.08642.09991.78601.81033.15122.4545
H51.08642.09991.78601.81032.45453.1512
O62.29411.21292.71523.15122.45452.1573
O72.29411.21292.71522.45453.15122.1573

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 115.566 C1 N2 O7 115.566
N2 C1 H3 107.249 N2 C1 H4 107.966
N2 C1 H5 107.966 H3 C1 H4 110.292
H3 C1 H5 110.292 H4 C1 H5 112.861
O6 N2 O7 125.568
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability