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/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 MP3=FULL/cc-pVDZ
 hartrees
Energy at 0K-244.382194
Energy at 298.15K 
HF Energy-243.681872
Nuclear repulsion energy125.543555
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/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' 3247 3053 1.38      
2 A' 3140 2953 1.26      
3 A' 1539 1447 87.55      
4 A' 1487 1399 12.84      
5 A' 1427 1342 1.62      
6 A' 1150 1082 1.12      
7 A' 995 935 10.34      
8 A' 706 663 30.49      
9 A' 631 593 6.49      
10 A" 3278 3082 0.21      
11 A" 1834 1724 307.67      
12 A" 1476 1388 24.07      
13 A" 1128 1061 10.46      
14 A" 499 469 0.69      
15 A" 40 37 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 11287.7 cm-1
Scaled (by 0.9403) Zero Point Vibrational Energy (zpe) 10613.8 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 MP3=FULL/cc-pVDZ
ABC
0.41472 0.35568 0.19881

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.314 0.000
N2 -0.013 0.175 0.000
H3 1.055 -1.625 0.000
H4 -0.498 -1.658 0.912
H5 -0.498 -1.658 -0.912
O6 0.001 0.725 -1.081
O7 0.001 0.725 1.081

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48911.09891.09511.09512.30742.3074
N21.48912.09342.10452.10451.21241.2124
H31.09892.09341.80161.80162.79322.7932
H41.09512.10451.80161.82303.14622.4411
H51.09512.10451.80161.82302.44113.1462
O62.30741.21242.79323.14622.44112.1610
O72.30741.21242.79322.44113.14622.1610

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 116.957 C1 N2 O7 116.957
N2 C1 H3 107.011 N2 C1 H4 108.075
N2 C1 H5 108.075 H3 C1 H4 110.394
H3 C1 H5 110.394 H4 C1 H5 112.674
O6 N2 O7 126.050
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability