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

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-132.549983
Energy at 298.15K-132.552327
Nuclear repulsion energy59.437729
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/cc-pVDZ
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 2976 2959 16.72      
2 A1 2160 2147 89.99      
3 A1 1377 1369 4.08      
4 A1 957 952 5.71      
5 E 3063 3045 4.24      
5 E 3063 3045 4.24      
6 E 1407 1399 10.59      
6 E 1407 1399 10.59      
7 E 1084 1078 0.20      
7 E 1084 1078 0.20      
8 E 269 267 0.18      
8 E 269 267 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 9557.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9502.5 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/cc-pVDZ
ABC
5.15291 0.33038 0.33038

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.112
N2 0.000 0.000 0.308
C3 0.000 0.000 1.499
H4 0.000 1.040 -1.494
H5 0.901 -0.520 -1.494
H6 -0.901 -0.520 -1.494

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41982.61081.10811.10811.1081
N21.41981.19092.08042.08042.0804
C32.61081.19093.16833.16833.1683
H41.10812.08043.16831.80171.8017
H51.10812.08043.16831.80171.8017
H61.10812.08043.16831.80171.8017

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 110.157
N2 C1 H5 110.157 N2 C1 H6 110.157
H4 C1 H5 108.776 H4 C1 H6 108.776
H5 C1 H6 108.776
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.026      
2 N -0.055      
3 C -0.203      
4 H 0.077      
5 H 0.077      
6 H 0.077      


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 -3.814 3.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.545 0.000 0.000
y 0.000 -17.545 0.000
z 0.000 0.000 -21.296
Traceless
 xyz
x 1.876 0.000 0.000
y 0.000 1.876 0.000
z 0.000 0.000 -3.751
Polar
3z2-r2-7.503
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 2.981 0.000 0.000
y 0.000 2.981 0.000
z 0.000 0.000 5.802


<r2> (average value of r2) Å2
<r2> 43.240
(<r2>)1/2 6.576