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All results from a given calculation for CH3NC (methyl isocyanide)

using model chemistry: QCISD(T)/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD(T)/6-311G**
 hartrees
Energy at 0K-132.388412
Energy at 298.15K-132.390758
HF Energy-131.925139
Nuclear repulsion energy59.575965
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(T)/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3064 3064        
2 A1 2177 2177        
3 A1 1468 1468        
4 A1 960 960        
5 E 3151 3151        
5 E 3151 3151        
6 E 1508 1508        
6 E 1508 1508        
7 E 1156 1156        
7 E 1156 1156        
8 E 258 258        
8 E 258 258        

Unscaled Zero Point Vibrational Energy (zpe) 9907.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9907.2 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(T)/6-311G**
ABC
5.23313 0.33035 0.33035

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.119
N2 0.000 0.000 0.313
C3 0.000 0.000 1.496
H4 0.000 1.032 -1.482
H5 0.894 -0.516 -1.482
H6 -0.894 -0.516 -1.482

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.43242.61501.09411.09411.0941
N21.43241.18262.07092.07092.0709
C32.61501.18263.15173.15173.1517
H41.09412.07093.15171.78781.7878
H51.09412.07093.15171.78781.7878
H61.09412.07093.15171.78781.7878

picture of methyl isocyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 180.000 N2 C1 H4 109.369
N2 C1 H5 109.369 N2 C1 H6 109.369
H4 C1 H5 109.573 H4 C1 H6 109.573
H5 C1 H6 109.573
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability