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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-22.954247
Energy at 298.15K-22.956566
Nuclear repulsion energy31.838310
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/CEP-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 3058 2953 32.13      
2 A1 2201 2126 144.35      
3 A1 1447 1398 6.12      
4 A1 929 897 18.69      
5 E 3137 3030 21.31      
5 E 3137 3030 21.32      
6 E 1484 1433 9.53      
6 E 1484 1433 9.53      
7 E 1134 1095 0.01      
7 E 1134 1095 0.01      
8 E 259 250 1.25      
8 E 259 250 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 9830.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9493.5 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/CEP-31G*
ABC
5.16742 0.32445 0.32445

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.129
N2 0.000 0.000 0.316
C3 0.000 0.000 1.509
H4 0.000 1.039 -1.499
H5 0.900 -0.519 -1.499
H6 -0.900 -0.519 -1.499

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.44492.63801.10261.10261.1026
N21.44491.19312.09102.09102.0910
C32.63801.19313.18213.18213.1821
H41.10262.09103.18211.79921.7992
H51.10262.09103.18211.79921.7992
H61.10262.09103.18211.79921.7992

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 109.597
N2 C1 H5 109.597 N2 C1 H6 109.597
H4 C1 H5 109.346 H4 C1 H6 109.346
H5 C1 H6 109.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.520      
2 N 0.454      
3 C -0.586      
4 H 0.217      
5 H 0.217      
6 H 0.217      


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 -3.954 3.954
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.525 0.000 0.000
y 0.000 -17.525 0.000
z 0.000 0.000 -21.198
Traceless
 xyz
x 1.836 0.000 0.000
y 0.000 1.836 0.000
z 0.000 0.000 -3.673
Polar
3z2-r2-7.346
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 2.888 0.000 0.000
y 0.000 2.888 0.000
z 0.000 0.000 5.498


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