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

using model chemistry: B3LYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/3-21G*
 hartrees
Energy at 0K-131.985509
Energy at 298.15K-131.987933
Nuclear repulsion energy59.515021
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 B3LYP/3-21G*
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 3063 2947 13.00      
2 A1 2197 2113 94.56      
3 A1 1485 1429 1.84      
4 A1 913 878 18.28      
5 E 3131 3012 8.82      
5 E 3131 3012 8.82      
6 E 1559 1499 13.15      
6 E 1559 1499 13.15      
7 E 1167 1122 0.02      
7 E 1167 1122 0.02      
8 E 294 282 2.56      
8 E 294 282 2.56      

Unscaled Zero Point Vibrational Energy (zpe) 9978.7 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9599.5 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 B3LYP/3-21G*
ABC
5.26745 0.32914 0.32914

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.120
N2 0.000 0.000 0.316
C3 0.000 0.000 1.498
H4 0.000 1.029 -1.491
H5 0.891 -0.514 -1.491
H6 -0.891 -0.514 -1.491

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.43602.61821.09351.09351.0935
N21.43601.18212.07892.07892.0789
C32.61821.18213.16083.16083.1608
H41.09352.07893.16081.78201.7820
H51.09352.07893.16081.78201.7820
H61.09352.07893.16081.78201.7820

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 109.803
N2 C1 H5 109.803 N2 C1 H6 109.803
H4 C1 H5 109.137 H4 C1 H6 109.137
H5 C1 H6 109.137
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.374      
2 N -0.540      
3 C 0.184      
4 H 0.244      
5 H 0.244      
6 H 0.244      


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 -3.752 3.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.544 0.000 0.000
y 0.000 -17.544 0.000
z 0.000 0.000 -20.777
Traceless
 xyz
x 1.616 0.000 0.000
y 0.000 1.616 0.000
z 0.000 0.000 -3.233
Polar
3z2-r2-6.466
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 2.516 0.000 0.000
y 0.000 2.516 0.000
z 0.000 0.000 4.876


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