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

using model chemistry: QCISD(T)/TZVP

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(T)/TZVP
 hartrees
Energy at 0K-244.529562
Energy at 298.15K 
HF Energy-243.743211
Nuclear repulsion energy124.174227
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(T)/TZVP
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' 3196 3078        
2 A' 3094 2980        
3 A' 1493 1438        
4 A' 1443 1390        
5 A' 1385 1334        
6 A' 1152 1109        
7 A' 922 888        
8 A' 660 636        
9 A' 587 565        
10 A" 3222 3103        
11 A" 1586 1528        
12 A" 1487 1432        
13 A" 1126 1085        
14 A" 478 461        
15 A" 47 46        

Unscaled Zero Point Vibrational Energy (zpe) 10938.1 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 10535.6 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(T)/TZVP
ABC
0.40504 0.34808 0.19415

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.331 0.000
N2 -0.013 0.172 0.000
H3 1.049 -1.634 0.000
H4 -0.497 -1.667 0.905
H5 -0.497 -1.667 -0.905
O6 0.002 0.734 -1.095
O7 0.002 0.734 1.095

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50261.09011.08681.08682.33772.3377
N21.50262.09452.10562.10561.23131.2313
H31.09012.09451.79211.79212.81132.8113
H41.08682.10561.79211.81023.16482.4600
H51.08682.10561.79211.81022.46003.1648
O62.33771.23132.81133.16482.46002.1900
O72.33771.23132.81132.46003.16482.1900

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 117.193 C1 N2 O7 117.193
N2 C1 H3 106.690 N2 C1 H4 107.724
N2 C1 H5 107.724 H3 C1 H4 110.822
H3 C1 H5 110.822 H4 C1 H5 112.772
O6 N2 O7 125.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability