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

using model chemistry: LSDA/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 LSDA/6-31G*
 hartrees
Energy at 0K-131.956165
Energy at 298.15K-131.958593
Nuclear repulsion energy60.031234
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 LSDA/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 2993 2937 11.31      
2 A1 2221 2179 80.30      
3 A1 1413 1387 0.07      
4 A1 1009 990 5.22      
5 E 3074 3017 2.32      
5 E 3074 3017 2.32      
6 E 1446 1419 13.33      
6 E 1446 1419 13.33      
7 E 1108 1087 1.00      
7 E 1108 1087 1.00      
8 E 299 294 0.56      
8 E 299 294 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 9744.6 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 9562.4 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 LSDA/6-31G*
ABC
5.21604 0.33791 0.33791

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.096
N2 0.000 0.000 0.302
C3 0.000 0.000 1.484
H4 0.000 1.034 -1.482
H5 0.895 -0.517 -1.482
H6 -0.895 -0.517 -1.482

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.39762.57961.10361.10361.1036
N21.39761.18202.06162.06162.0616
C32.57961.18203.14073.14073.1407
H41.10362.06163.14071.79081.7908
H51.10362.06163.14071.79081.7908
H61.10362.06163.14071.79081.7908

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 110.476
N2 C1 H5 110.476 N2 C1 H6 110.476
H4 C1 H5 108.448 H4 C1 H6 108.448
H5 C1 H6 108.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.465      
2 N -0.118      
3 C -0.102      
4 H 0.228      
5 H 0.228      
6 H 0.228      


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 -3.759 3.759
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.400 0.000 0.000
y 0.000 -17.400 0.000
z 0.000 0.000 -20.933
Traceless
 xyz
x 1.766 0.000 0.000
y 0.000 1.766 0.000
z 0.000 0.000 -3.532
Polar
3z2-r2-7.065
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 2.852 0.000 0.000
y 0.000 2.852 0.000
z 0.000 0.000 5.501


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