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

using model chemistry: BLYP/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 BLYP/3-21G*
 hartrees
Energy at 0K-131.934185
Energy at 298.15K-131.936540
Nuclear repulsion energy58.973434
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 BLYP/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 2984 2964 14.47      
2 A1 2098 2084 77.02      
3 A1 1442 1432 2.34      
4 A1 866 861 13.65      
5 E 3047 3027 10.79      
5 E 3047 3027 10.79      
6 E 1521 1511 12.01      
6 E 1521 1511 12.01      
7 E 1129 1122 0.04      
7 E 1129 1122 0.03      
8 E 276 274 1.94      
8 E 276 274 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 9666.2 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 9603.4 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 BLYP/3-21G*
ABC
5.19391 0.32300 0.32300

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.131
N2 0.000 0.000 0.318
C3 0.000 0.000 1.512
H4 0.000 1.036 -1.504
H5 0.897 -0.518 -1.504
H6 -0.897 -0.518 -1.504

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.44892.64361.10111.10111.1011
N21.44891.19482.09552.09552.0955
C32.64361.19483.18923.18923.1892
H41.10112.09553.18921.79461.7946
H51.10112.09553.18921.79461.7946
H61.10112.09553.18921.79461.7946

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 109.780
N2 C1 H5 109.780 N2 C1 H6 109.780
H4 C1 H5 109.161 H4 C1 H6 109.161
H5 C1 H6 109.161
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.365      
2 N -0.482      
3 C 0.151      
4 H 0.232      
5 H 0.232      
6 H 0.232      


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 -3.771 3.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.561 0.000 0.000
y 0.000 -17.561 0.000
z 0.000 0.000 -20.856
Traceless
 xyz
x 1.648 0.000 0.000
y 0.000 1.648 0.000
z 0.000 0.000 -3.295
Polar
3z2-r2-6.590
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 2.550 0.000 0.000
y 0.000 2.550 0.000
z 0.000 0.000 5.106


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