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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-132.716572
Energy at 298.15K-132.718962
Nuclear repulsion energy59.858337
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 B3LYPultrafine/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 3064 2936 19.19      
2 A1 2250 2155 118.59      
3 A1 1481 1419 5.90      
4 A1 969 929 14.34      
5 E 3138 3007 9.61      
5 E 3138 3007 9.61      
6 E 1517 1453 8.76      
6 E 1517 1453 8.76      
7 E 1162 1114 0.01      
7 E 1162 1114 0.01      
8 E 279 267 0.76      
8 E 279 267 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 9978.7 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 9559.6 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 B3LYPultrafine/6-31G*
ABC
5.27205 0.33396 0.33396

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.109
N2 0.000 0.000 0.311
C3 0.000 0.000 1.488
H4 0.000 1.028 -1.483
H5 0.891 -0.514 -1.483
H6 -0.891 -0.514 -1.483

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42032.59761.09431.09431.0943
N21.42031.17732.06812.06812.0681
C32.59761.17733.14453.14453.1445
H41.09432.06813.14451.78121.7812
H51.09432.06813.14451.78121.7812
H61.09432.06813.14451.78121.7812

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 109.983
N2 C1 H5 109.983 N2 C1 H6 109.983
H4 C1 H5 108.955 H4 C1 H6 108.955
H5 C1 H6 108.955
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.334      
2 N -0.201      
3 C -0.053      
4 H 0.196      
5 H 0.196      
6 H 0.196      


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 -3.626 3.626
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.415 0.000 0.000
y 0.000 -17.415 0.000
z 0.000 0.000 -20.853
Traceless
 xyz
x 1.719 0.000 0.000
y 0.000 1.719 0.000
z 0.000 0.000 -3.438
Polar
3z2-r2-6.877
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 2.777 0.000 0.000
y 0.000 2.777 0.000
z 0.000 0.000 5.242


<r2> (average value of r2) Å2
<r2> 42.717
(<r2>)1/2 6.536