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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: QCISD(TQ)/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 QCISD(TQ)/6-31G*
 hartrees
Energy at 0K-169.336042
Energy at 298.15K-169.339709
HF Energy-168.823727
Nuclear repulsion energy69.719564
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(TQ)/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' 3174 3174        
2 A' 3056 3056        
3 A' 1601 1601        
4 A' 1499 1499        
5 A' 1417 1417        
6 A' 1170 1170        
7 A' 884 884        
8 A' 580 580        
9 A" 3146 3146        
10 A" 1500 1500        
11 A" 997 997        
12 A" 140 140        

Unscaled Zero Point Vibrational Energy (zpe) 9581.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9581.9 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 QCISD(TQ)/6-31G*
ABC
1.96732 0.37996 0.33883

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.959 -0.559 0.000
N2 0.000 0.584 0.000
O3 1.170 0.209 0.000
H4 -0.426 -1.516 0.000
H5 -1.592 -0.445 0.889
H6 -1.592 -0.445 -0.889

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.49142.26321.09531.09731.0973
N21.49141.22902.14222.09392.0939
O32.26321.22902.34982.97492.9749
H41.09532.14222.34981.81531.8153
H51.09732.09392.97491.81531.7774
H61.09732.09392.97491.81531.7774

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.236 N2 C1 H4 110.889
N2 C1 H5 106.985 N2 C1 H6 106.985
H4 C1 H5 111.780 H4 C1 H6 111.780
H5 C1 H6 108.175
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability