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

using model chemistry: MP4/6-31G*

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 MP4/6-31G*
 hartrees
Energy at 0K-244.374490
Energy at 298.15K 
HF Energy-243.651115
Nuclear repulsion energy123.299202
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 MP4/6-31G*
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' 3209 3064        
2 A' 3106 2966        
3 A' 1515 1447        
4 A' 1442 1377        
5 A' 1386 1323        
6 A' 1154 1101        
7 A' 907 866        
8 A' 654 625        
9 A' 589 562        
10 A" 3234 3088        
11 A" 1674 1598        
12 A" 1509 1441        
13 A" 1125 1075        
14 A" 474 452        
15 A" 25 24        

Unscaled Zero Point Vibrational Energy (zpe) 11001.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 10504.2 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 MP4/6-31G*
ABC
0.39414 0.34864 0.19182

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.328 0.000
N2 -0.015 0.169 0.000
H3 1.052 -1.635 0.000
H4 -0.499 -1.666 0.909
H5 -0.499 -1.666 -0.909
O6 0.002 0.735 -1.111
O7 0.002 0.735 1.111

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49781.09421.09131.09132.34312.3431
N21.49782.09642.10452.10451.24671.2467
H31.09422.09641.79801.79802.82022.8202
H41.09132.10451.79801.81753.17712.4608
H51.09132.10451.79801.81752.46083.1771
O62.34311.24672.82023.17712.46082.2220
O72.34311.24672.82022.46083.17712.2220

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 116.955 C1 N2 O7 116.955
N2 C1 H3 106.927 N2 C1 H4 107.720
N2 C1 H5 107.720 H3 C1 H4 110.719
H3 C1 H5 110.719 H4 C1 H5 112.770
O6 N2 O7 126.041
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability