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

using model chemistry: PBEPBE/6-311G**

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/6-311G**
 hartrees
Energy at 0K-132.578171
Energy at 298.15K-132.580529
Nuclear repulsion energy59.700669
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/6-311G**
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 2980 2953 15.73      
2 A1 2159 2140 100.84      
3 A1 1399 1386 1.69      
4 A1 948 939 7.14      
5 E 3056 3028 6.55      
5 E 3056 3028 6.55      
6 E 1439 1426 11.78      
6 E 1439 1426 11.78      
7 E 1101 1091 0.08      
7 E 1101 1091 0.08      
8 E 271 269 0.64      
8 E 271 269 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 9610.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 9522.9 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/6-311G**
ABC
5.21832 0.33267 0.33267

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.111
N2 0.000 0.000 0.310
C3 0.000 0.000 1.492
H4 0.000 1.034 -1.486
H5 0.895 -0.517 -1.486
H6 -0.895 -0.517 -1.486

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42062.60261.09971.09971.0997
N21.42061.18202.07222.07222.0722
C32.60261.18203.15233.15233.1523
H41.09972.07223.15231.79041.7904
H51.09972.07223.15231.79041.7904
H61.09972.07223.15231.79041.7904

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 109.959
N2 C1 H5 109.959 N2 C1 H6 109.959
H4 C1 H5 108.979 H4 C1 H6 108.979
H5 C1 H6 108.979
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 N -0.172      
3 C -0.096      
4 H 0.160      
5 H 0.160      
6 H 0.160      


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 -3.892 3.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.762 0.000 0.000
y 0.000 -17.762 0.000
z 0.000 0.000 -21.336
Traceless
 xyz
x 1.787 0.000 0.000
y 0.000 1.787 0.000
z 0.000 0.000 -3.574
Polar
3z2-r2-7.148
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 3.115 0.000 0.000
y 0.000 3.115 0.000
z 0.000 0.000 5.787


<r2> (average value of r2) Å2
<r2> 43.098
(<r2>)1/2 6.565