return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP3=FULL/Def2TZVPP

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 MP3=FULL/Def2TZVPP
 hartrees
Energy at 0K-244.698006
Energy at 298.15K 
HF Energy-243.771219
Nuclear repulsion energy126.388965
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 MP3=FULL/Def2TZVPP
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' 3229 3229 1.18      
2 A' 3134 3134 0.76      
3 A' 1535 1535 68.15      
4 A' 1506 1506 19.54      
5 A' 1453 1453 3.01      
6 A' 1174 1174 0.93      
7 A' 995 995 6.97      
8 A' 704 704 28.86      
9 A' 640 640 5.49      
10 A" 3259 3259 0.05      
11 A" 1777 1777 410.26      
12 A" 1497 1497 31.94      
13 A" 1142 1142 14.08      
14 A" 498 498 1.18      
15 A" 19 19 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11279.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11279.9 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 MP3=FULL/Def2TZVPP
ABC
0.42118 0.35937 0.20122

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.309 0.000
N2 -0.010 0.172 0.000
H3 1.040 -1.613 0.000
H4 -0.491 -1.645 0.900
H5 -0.491 -1.645 -0.900
O6 0.001 0.722 -1.073
O7 0.001 0.722 1.073

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48101.08281.07931.07932.29662.2966
N21.48102.07082.08452.08451.20551.2055
H31.08282.07081.77611.77612.77172.7717
H41.07932.08451.77611.79953.12052.4241
H51.07932.08451.77611.79952.42413.1205
O62.29661.20552.77173.12052.42412.1456
O72.29661.20552.77172.42413.12052.1456

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 117.124 C1 N2 O7 117.124
N2 C1 H3 106.719 N2 C1 H4 107.990
N2 C1 H5 107.990 H3 C1 H4 110.464
H3 C1 H5 110.464 H4 C1 H5 112.955
O6 N2 O7 125.732
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability