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

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-132.722304
Energy at 298.15K-132.724689
HF Energy-132.722304
Nuclear repulsion energy59.764544
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 TPSSh/6-31G*
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 3066 2942 19.89      
2 A1 2224 2134 113.67      
3 A1 1484 1424 6.37      
4 A1 961 922 13.57      
5 E 3145 3018 11.11      
5 E 3145 3018 11.11      
6 E 1529 1467 7.98      
6 E 1529 1467 7.97      
7 E 1163 1116 0.13      
7 E 1163 1116 0.13      
8 E 277 266 0.98      
8 E 277 266 0.98      

Unscaled Zero Point Vibrational Energy (zpe) 9982.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9577.3 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 TPSSh/6-31G*
ABC
5.25909 0.33287 0.33287

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.112
N2 0.000 0.000 0.311
C3 0.000 0.000 1.490
H4 0.000 1.030 -1.480
H5 0.892 -0.515 -1.480
H6 -0.892 -0.515 -1.480

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42322.60191.09331.09331.0933
N21.42321.17862.06562.06562.0656
C32.60191.17863.14283.14283.1428
H41.09332.06563.14281.78361.7836
H51.09332.06563.14281.78361.7836
H61.09332.06563.14281.78361.7836

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 109.637
N2 C1 H5 109.637 N2 C1 H6 109.637
H4 C1 H5 109.305 H4 C1 H6 109.305
H5 C1 H6 109.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363      
2 N -0.222      
3 C -0.042      
4 H 0.209      
5 H 0.209      
6 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.684 3.684
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.797 0.000 0.000
y 0.000 2.797 0.000
z 0.000 0.000 5.321


<r2> (average value of r2) Å2
<r2> 42.774
(<r2>)1/2 6.540