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

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-131.945246
Energy at 298.15K-131.947728
HF Energy-131.945246
Nuclear repulsion energy60.716315
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 HF/daug-cc-pVTZ
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 3198 2893 26.53      
2 A1 2442 2209 248.74      
3 A1 1578 1428 12.92      
4 A1 1003 907 31.74      
5 E 3273 2961 11.13      
5 E 3273 2961 11.13      
6 E 1612 1458 9.97      
6 E 1612 1458 9.97      
7 E 1251 1132 1.01      
7 E 1251 1132 1.01      
8 E 300 271 0.90      
8 E 300 271 0.90      

Unscaled Zero Point Vibrational Energy (zpe) 10547.2 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 9541.0 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 HF/daug-cc-pVTZ
ABC
5.38634 0.34237 0.34237

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.102
N2 0.000 0.000 0.318
C3 0.000 0.000 1.462
H4 0.000 1.017 -1.463
H5 0.881 -0.509 -1.463
H6 -0.881 -0.509 -1.463

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42062.56481.07941.07941.0794
N21.42061.14412.05132.05132.0513
C32.56481.14413.09723.09723.0972
H41.07942.05133.09721.76221.7622
H51.07942.05133.09721.76221.7622
H61.07942.05133.09721.76221.7622

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 109.513
N2 C1 H5 109.513 N2 C1 H6 109.513
H4 C1 H5 109.430 H4 C1 H6 109.430
H5 C1 H6 109.430
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.551      
2 N 0.071      
3 C -1.861      
4 H 0.780      
5 H 0.780      
6 H 0.780      


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 -3.743 3.743
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.932 0.000 0.000
y 0.000 -17.932 0.000
z 0.000 0.000 -21.498
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-r2-7.132
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 3.601 0.000 0.000
y 0.000 3.601 0.000
z 0.000 0.000 5.618


<r2> (average value of r2) Å2
<r2> 42.300
(<r2>)1/2 6.504