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

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-132.596376
Energy at 298.15K-132.598741
HF Energy-132.596376
Nuclear repulsion energy59.864023
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 PBEPBE/Def2TZVPP
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 2981 2945 14.57      
2 A1 2163 2137 102.66      
3 A1 1399 1382 2.01      
4 A1 947 935 6.54      
5 E 3055 3018 4.45      
5 E 3055 3018 4.46      
6 E 1436 1419 10.87      
6 E 1436 1419 10.87      
7 E 1101 1088 0.00      
7 E 1101 1088 0.00      
8 E 275 272 0.32      
8 E 275 272 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 9612.6 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 9496.3 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 PBEPBE/Def2TZVPP
ABC
5.23583 0.33453 0.33453

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

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 0.312
C3 0.000 0.000 1.485
H4 0.000 1.032 -1.480
H5 0.894 -0.516 -1.480
H6 -0.894 -0.516 -1.480

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42042.59411.09671.09671.0967
N21.42041.17372.06732.06732.0673
C32.59411.17373.13933.13933.1393
H41.09672.06733.13931.78781.7878
H51.09672.06733.13931.78781.7878
H61.09672.06733.13931.78781.7878

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 109.753
N2 C1 H5 109.753 N2 C1 H6 109.753
H4 C1 H5 109.188 H4 C1 H6 109.188
H5 C1 H6 109.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.154      
2 N 0.077      
3 C -0.299      
4 H 0.125      
5 H 0.125      
6 H 0.125      


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 -3.943 3.943
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.982 0.000 0.000
y 0.000 -17.982 0.000
z 0.000 0.000 -21.776
Traceless
 xyz
x 1.897 0.000 0.000
y 0.000 1.897 0.000
z 0.000 0.000 -3.794
Polar
3z2-r2-7.588
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 3.642 0.000 0.000
y 0.000 3.642 0.000
z 0.000 0.000 6.305


<r2> (average value of r2) Å2
<r2> 43.115
(<r2>)1/2 6.566