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

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-132.768987
Energy at 298.15K-132.771379
Nuclear repulsion energy60.175610
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/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 3047 2945 16.57      
2 A1 2241 2166 125.72      
3 A1 1458 1409 4.73      
4 A1 953 921 13.11      
5 E 3116 3012 6.49      
5 E 3116 3012 6.49      
6 E 1492 1443 9.94      
6 E 1492 1443 9.94      
7 E 1149 1111 0.02      
7 E 1149 1111 0.02      
8 E 276 267 0.26      
8 E 276 267 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 9882.5 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 9552.4 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 B3LYP/cc-pVTZ
ABC
5.31423 0.33717 0.33717

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.106
N2 0.000 0.000 0.313
C3 0.000 0.000 1.479
H4 0.000 1.024 -1.476
H5 0.887 -0.512 -1.476
H6 -0.887 -0.512 -1.476

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41932.58491.08901.08901.0890
N21.41931.16562.06152.06152.0615
C32.58491.16563.12713.12713.1271
H41.08902.06153.12711.77411.7741
H51.08902.06153.12711.77411.7741
H61.08902.06153.12711.77411.7741

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 109.848
N2 C1 H5 109.848 N2 C1 H6 109.848
H4 C1 H5 109.091 H4 C1 H6 109.091
H5 C1 H6 109.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.129      
2 N 0.057      
3 C -0.282      
4 H 0.118      
5 H 0.118      
6 H 0.118      


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 -3.869 3.869
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.845 0.000 0.000
y 0.000 -17.845 0.000
z 0.000 0.000 -21.573
Traceless
 xyz
x 1.864 0.000 0.000
y 0.000 1.864 0.000
z 0.000 0.000 -3.728
Polar
3z2-r2-7.456
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 3.389 0.000 0.000
y 0.000 3.389 0.000
z 0.000 0.000 5.803


<r2> (average value of r2) Å2
<r2> 42.752
(<r2>)1/2 6.538