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

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-131.911927
Energy at 298.15K-131.914386
Nuclear repulsion energy60.361233
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 HF/aug-cc-pVDZ
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 3209 2922 28.78      
2 A1 2439 2221 249.29      
3 A1 1559 1419 12.94      
4 A1 1008 918 31.40      
5 E 3296 3001 11.39      
5 E 3296 3001 11.39      
6 E 1590 1448 10.27      
6 E 1590 1448 10.27      
7 E 1238 1128 0.96      
7 E 1238 1128 0.96      
8 E 288 262 1.19      
8 E 288 262 1.19      

Unscaled Zero Point Vibrational Energy (zpe) 10519.7 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 9579.3 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 HF/aug-cc-pVDZ
ABC
5.30911 0.33877 0.33877

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

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 0.318
C3 0.000 0.000 1.471
H4 0.000 1.025 -1.468
H5 0.887 -0.512 -1.468
H6 -0.887 -0.512 -1.468

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42572.57921.08641.08641.0864
N21.42571.15352.05932.05932.0593
C32.57921.15353.11323.11323.1132
H41.08642.05933.11321.77501.7750
H51.08642.05933.11321.77501.7750
H61.08642.05933.11321.77501.7750

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 109.383
N2 C1 H5 109.383 N2 C1 H6 109.383
H4 C1 H5 109.560 H4 C1 H6 109.560
H5 C1 H6 109.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.842      
2 N -0.263      
3 C -0.386      
4 H -0.064      
5 H -0.064      
6 H -0.064      


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 -3.755 3.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.034 0.000 0.000
y 0.000 -18.034 0.000
z 0.000 0.000 -21.551
Traceless
 xyz
x 1.759 0.000 0.000
y 0.000 1.759 0.000
z 0.000 0.000 -3.517
Polar
3z2-r2-7.034
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.595 0.000 0.000
y 0.000 3.595 0.000
z 0.000 0.000 5.679


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000