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

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-242.750939
Energy at 298.15K 
HF Energy-242.248513
Nuclear repulsion energy120.051820
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 QCISD/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' 3170 3073 2.86      
2 A' 3081 2986 1.57      
3 A' 1555 1507 11.12      
4 A' 1444 1399 0.92      
5 A' 1193 1156 44.51      
6 A' 1147 1112 0.36      
7 A' 807 783 0.72      
8 A' 592 574 26.11      
9 A' 516 500 3.87      
10 A" 3202 3103 0.54      
11 A" 1554 1506 4.77      
12 A" 1305 1265 85.67      
13 A" 1040 1008 59.17      
14 A" 423 410 0.45      
15 A" 14i 14i 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10507.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 10184.2 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 QCISD/3-21G
ABC
0.36557 0.33765 0.18172

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.353 0.000
N2 -0.016 0.167 0.000
H3 1.052 -1.666 0.000
H4 -0.506 -1.674 0.910
H5 -0.506 -1.674 -0.910
O6 0.003 0.748 -1.157
O7 0.003 0.748 1.157

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52001.09481.09081.09082.39832.3983
N21.52002.12152.11092.11091.29461.2946
H31.09482.12151.80461.80462.87482.8748
H41.09082.11091.80461.81903.22402.4871
H51.09082.11091.80461.81902.48713.2240
O62.39831.29462.87483.22402.48712.3136
O72.39831.29462.87482.48713.22402.3136

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 116.649 C1 N2 O7 116.649
N2 C1 H3 107.331 N2 C1 H4 106.751
N2 C1 H5 106.751 H3 C1 H4 111.320
H3 C1 H5 111.320 H4 C1 H5 112.989
O6 N2 O7 126.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability