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/6-311G*

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/6-311G*
 hartrees
Energy at 0K-244.437245
Energy at 298.15K 
HF Energy-243.721538
Nuclear repulsion energy125.641533
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/6-311G*
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' 3202 3059 2.35      
2 A' 3103 2963 1.51      
3 A' 1525 1457 74.93      
4 A' 1506 1438 22.82      
5 A' 1459 1393 5.78      
6 A' 1174 1121 0.99      
7 A' 986 942 8.76      
8 A' 703 672 29.23      
9 A' 631 603 6.57      
10 A" 3231 3086 0.59      
11 A" 1799 1718 346.10      
12 A" 1500 1432 29.99      
13 A" 1149 1097 12.95      
14 A" 503 480 0.88      
15 A" 31 30 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11250.8 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 10745.7 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/6-311G*
ABC
0.41605 0.35528 0.19891

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.316 0.000
N2 -0.014 0.174 0.000
H3 1.050 -1.621 0.000
H4 -0.496 -1.657 0.906
H5 -0.496 -1.657 -0.906
O6 0.002 0.726 -1.079
O7 0.002 0.726 1.079

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49051.09181.08821.08822.30932.3093
N21.49052.08692.09892.09891.21191.2119
H31.09182.08691.79211.79212.78762.7876
H41.08822.09891.79211.81203.14062.4397
H51.08822.09891.79211.81202.43973.1406
O62.30931.21192.78763.14062.43972.1583
O72.30931.21192.78762.43973.14062.1583

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 117.046 C1 N2 O7 117.046
N2 C1 H3 106.819 N2 C1 H4 107.951
N2 C1 H5 107.951 H3 C1 H4 110.577
H3 C1 H5 110.577 H4 C1 H5 112.718
O6 N2 O7 125.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability