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: CCD/cc-pVDZ

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 CCD/cc-pVDZ
 hartrees
Energy at 0K-244.378476
Energy at 298.15K 
HF Energy-243.681116
Nuclear repulsion energy125.250665
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 CCD/cc-pVDZ
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' 3225 3085 1.75      
2 A' 3117 2982 1.77      
3 A' 1524 1458 86.34      
4 A' 1483 1419 12.81      
5 A' 1423 1361 1.02      
6 A' 1147 1097 0.90      
7 A' 983 941 10.19      
8 A' 700 670 29.82      
9 A' 628 601 6.69      
10 A" 3254 3113 0.33      
11 A" 1815 1736 305.20      
12 A" 1471 1408 23.55      
13 A" 1123 1074 11.05      
14 A" 495 474 0.63      
15 A" 37 35 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11212.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 10726.8 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 CCD/cc-pVDZ
ABC
0.41233 0.35438 0.19789

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.317 0.000
N2 -0.013 0.176 0.000
H3 1.058 -1.628 0.000
H4 -0.500 -1.661 0.913
H5 -0.500 -1.661 -0.913
O6 0.001 0.726 -1.084
O7 0.001 0.726 1.084

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49291.10111.09741.09742.31232.3123
N21.49292.09752.10902.10901.21531.2153
H31.10112.09751.80581.80582.79812.7981
H41.09742.10901.80581.82683.15262.4453
H51.09742.10901.80581.82682.44533.1526
O62.31231.21532.79813.15262.44532.1674
O72.31231.21532.79812.44533.15262.1674

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 116.891 C1 N2 O7 116.891
N2 C1 H3 106.950 N2 C1 H4 108.041
N2 C1 H5 108.041 H3 C1 H4 110.452
H3 C1 H5 110.452 H4 C1 H5 112.678
O6 N2 O7 126.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability