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

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-130.233171
Energy at 298.15K-130.235641
Nuclear repulsion energy59.567394
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/STO-3G
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 3552 2900 1.69      
2 A1 2600 2123 208.08      
3 A1 1711 1397 16.54      
4 A1 1109 906 19.05      
5 E 3729 3045 0.71      
5 E 3729 3045 0.71      
6 E 1779 1453 6.05      
6 E 1779 1453 6.05      
7 E 1312 1071 2.14      
7 E 1312 1071 2.14      
8 E 332 271 1.70      
8 E 332 271 1.70      

Unscaled Zero Point Vibrational Energy (zpe) 11638.1 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 9502.5 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/STO-3G
ABC
5.28014 0.32883 0.32883

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.124
N2 0.000 0.000 0.323
C3 0.000 0.000 1.494
H4 0.000 1.028 -1.494
H5 0.890 -0.514 -1.494
H6 -0.890 -0.514 -1.494

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.44672.61801.09221.09221.0922
N21.44671.17122.08732.08732.0873
C32.61801.17123.15983.15983.1598
H41.09222.08733.15981.77981.7798
H51.09222.08733.15981.77981.7798
H61.09222.08733.15981.77981.7798

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 109.804
N2 C1 H5 109.804 N2 C1 H6 109.804
H4 C1 H5 109.136 H4 C1 H6 109.136
H5 C1 H6 109.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.062      
2 N -0.332      
3 C 0.098      
4 H 0.099      
5 H 0.099      
6 H 0.099      


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 -2.955 2.955
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.226 0.000 0.000
y 0.000 -16.226 0.000
z 0.000 0.000 -19.490
Traceless
 xyz
x 1.632 0.000 0.000
y 0.000 1.632 0.000
z 0.000 0.000 -3.264
Polar
3z2-r2-6.527
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 1.323 0.000 0.000
y 0.000 1.323 0.000
z 0.000 0.000 2.936


<r2> (average value of r2) Å2
<r2> 42.379
(<r2>)1/2 6.510