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

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-132.405651
Energy at 298.15K-132.408090
HF Energy-131.908862
Nuclear repulsion energy60.070506
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 CCD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3116 2952 13.61      
2 A1 2287 2166 125.84      
3 A1 1495 1416 5.78      
4 A1 989 937 16.88      
5 E 3206 3036 3.97      
5 E 3206 3036 3.97      
6 E 1526 1445 8.42      
6 E 1526 1445 8.42      
7 E 1176 1114 0.09      
7 E 1176 1114 0.09      
8 E 291 276 0.22      
8 E 291 276 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 10142.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9606.9 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 CCD/6-31G(2df,p)
ABC
5.29679 0.33606 0.33606

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.108
N2 0.000 0.000 0.312
C3 0.000 0.000 1.482
H4 0.000 1.026 -1.476
H5 0.889 -0.513 -1.476
H6 -0.889 -0.513 -1.476

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42062.59021.08971.08971.0897
N21.42061.16962.06132.06132.0613
C32.59021.16963.13033.13033.1303
H41.08972.06133.13031.77701.7770
H51.08972.06133.13031.77701.7770
H61.08972.06133.13031.77701.7770

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 109.692
N2 C1 H5 109.692 N2 C1 H6 109.692
H4 C1 H5 109.250 H4 C1 H6 109.250
H5 C1 H6 109.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability