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

using model chemistry: CISD/3-21G

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 CISD/3-21G
 hartrees
Energy at 0K-242.685327
Energy at 298.15K 
HF Energy-242.253475
Nuclear repulsion energy121.800625
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 CISD/3-21G
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' 3263 3071 1.47      
2 A' 3172 2985 0.47      
3 A' 1592 1499 13.04      
4 A' 1493 1405 1.36      
5 A' 1291 1215 51.80      
6 A' 1191 1121 0.44      
7 A' 867 816 1.01      
8 A' 630 593 32.49      
9 A' 558 525 6.22      
10 A" 3296 3102 0.06      
11 A" 1597 1503 0.00      
12 A" 1485 1397 144.59      
13 A" 1131 1064 29.04      
14 A" 446 420 0.54      
15 A" 25 24 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 11017.1 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 10370.4 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 CISD/3-21G
ABC
0.37953 0.34444 0.18703

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.340 0.000
N2 -0.015 0.168 0.000
H3 1.046 -1.650 0.000
H4 -0.503 -1.660 0.904
H5 -0.503 -1.660 -0.904
O6 0.003 0.740 -1.134
O7 0.003 0.740 1.134

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50741.08781.08361.08362.36862.3686
N21.50742.10402.09602.09601.27051.2705
H31.08782.10401.79251.79252.84312.8431
H41.08362.09601.79251.80713.18812.4627
H51.08362.09601.79251.80712.46273.1881
O62.36861.27052.84313.18812.46272.2686
O72.36861.27052.84312.46273.18812.2686

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 116.747 C1 N2 O7 116.747
N2 C1 H3 107.228 N2 C1 H4 106.846
N2 C1 H5 106.846 H3 C1 H4 111.277
H3 C1 H5 111.277 H4 C1 H5 112.995
O6 N2 O7 126.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability