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

using model chemistry: B3LYP/6-311G**

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/6-311G**
 hartrees
Energy at 0K-132.754750
Energy at 298.15K-132.757132
Nuclear repulsion energy60.021662
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/6-311G**
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 3045 2944 17.37      
2 A1 2238 2164 127.63      
3 A1 1455 1407 3.92      
4 A1 956 925 14.05      
5 E 3117 3014 8.29      
5 E 3117 3014 8.29      
6 E 1492 1442 11.20      
6 E 1492 1442 11.20      
7 E 1146 1108 0.00      
7 E 1146 1108 0.00      
8 E 273 264 0.71      
8 E 273 264 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 9875.8 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 9547.9 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/6-311G**
ABC
5.28830 0.33547 0.33547

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

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 0.313
C3 0.000 0.000 1.483
H4 0.000 1.027 -1.479
H5 0.889 -0.513 -1.479
H6 -0.889 -0.513 -1.479

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42252.59181.09131.09131.0913
N21.42251.16932.06552.06552.0655
C32.59181.16933.13453.13443.1344
H41.09132.06553.13451.77851.7785
H51.09132.06553.13441.77851.7785
H61.09132.06553.13441.77851.7785

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 109.801
N2 C1 H5 109.801 N2 C1 H6 109.801
H4 C1 H5 109.139 H4 C1 H6 109.139
H5 C1 H6 109.139
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 N -0.197      
3 C -0.082      
4 H 0.147      
5 H 0.147      
6 H 0.147      


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 -3.855 3.855
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.755 0.000 0.000
y 0.000 -17.755 0.000
z 0.000 0.000 -21.321
Traceless
 xyz
x 1.783 0.000 0.000
y 0.000 1.783 0.000
z 0.000 0.000 -3.566
Polar
3z2-r2-7.133
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 3.046 0.000 0.000
y 0.000 3.046 0.000
z 0.000 0.000 5.483


<r2> (average value of r2) Å2
<r2> 42.814
(<r2>)1/2 6.543