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

using model chemistry: B3LYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-132.726884
Energy at 298.15K-132.729278
Nuclear repulsion energy60.056709
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/6-31G(2df,p)
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 3047 2940 17.69      
2 A1 2238 2160 123.72      
3 A1 1460 1409 6.53      
4 A1 966 932 11.57      
5 E 3121 3012 7.26      
5 E 3121 3012 7.25      
6 E 1489 1437 7.98      
6 E 1489 1437 7.98      
7 E 1152 1112 0.00      
7 E 1152 1112 0.00      
8 E 279 269 0.16      
8 E 279 269 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 9896.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9549.6 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 B3LYP/6-31G(2df,p)
ABC
5.28830 0.33633 0.33633

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.105
N2 0.000 0.000 0.311
C3 0.000 0.000 1.482
H4 0.000 1.027 -1.481
H5 0.889 -0.513 -1.481
H6 -0.889 -0.513 -1.481

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41592.58731.09341.09341.0934
N21.41591.17142.06512.06512.0651
C32.58731.17143.13593.13593.1359
H41.09342.06513.13591.77851.7785
H51.09342.06513.13591.77851.7785
H61.09342.06513.13591.77851.7785

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 110.101
N2 C1 H5 110.101 N2 C1 H6 110.101
H4 C1 H5 108.834 H4 C1 H6 108.834
H5 C1 H6 108.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.296      
2 N 0.045      
3 C -0.242      
4 H 0.164      
5 H 0.164      
6 H 0.164      


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 -3.703 3.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.425 0.000 0.000
y 0.000 -17.425 0.000
z 0.000 0.000 -21.064
Traceless
 xyz
x 1.819 0.000 0.000
y 0.000 1.819 0.000
z 0.000 0.000 -3.639
Polar
3z2-r2-7.278
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 3.029 0.000 0.000
y 0.000 3.029 0.000
z 0.000 0.000 5.426


<r2> (average value of r2) Å2
<r2> 42.568
(<r2>)1/2 6.524