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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP3=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31G**
 hartrees
Energy at 0K-169.342654
Energy at 298.15K-169.346385
HF Energy-168.832032
Nuclear repulsion energy70.482758
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3264 3264 10.03      
2 A' 3141 3141 2.67      
3 A' 1754 1754 36.03      
4 A' 1530 1530 14.43      
5 A' 1450 1450 11.87      
6 A' 1203 1203 12.17      
7 A' 925 925 9.83      
8 A' 599 599 2.89      
9 A" 3240 3240 6.88      
10 A" 1530 1530 8.16      
11 A" 1018 1018 2.93      
12 A" 154 154 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 9903.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9903.9 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/6-31G**
ABC
2.01800 0.38714 0.34560

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.946 -0.561 0.000
N2 0.000 0.577 0.000
O3 1.156 0.217 0.000
H4 -0.416 -1.508 0.000
H5 -1.576 -0.453 0.880
H6 -1.576 -0.453 -0.880

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47992.24111.08561.08721.0872
N21.47991.21042.12642.07832.0783
O32.24111.21042.33382.94692.9469
H41.08562.12642.33381.79771.7977
H51.08722.07832.94691.79771.7594
H61.08722.07832.94691.79771.7594

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.433 N2 C1 H4 111.030
N2 C1 H5 107.114 N2 C1 H6 107.114
H4 C1 H5 111.662 H4 C1 H6 111.662
H5 C1 H6 108.025
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability