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

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-132.669369
Energy at 298.15K-132.671754
Nuclear repulsion energy59.858044
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 B3PW91/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 3056 2949 17.23      
2 A1 2249 2170 114.17      
3 A1 1428 1378 5.11      
4 A1 985 951 9.53      
5 E 3148 3038 4.29      
5 E 3148 3038 4.29      
6 E 1457 1406 11.18      
6 E 1457 1406 11.19      
7 E 1125 1086 0.07      
7 E 1125 1086 0.07      
8 E 276 266 0.31      
8 E 276 266 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 9865.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9519.8 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 B3PW91/cc-pVDZ
ABC
5.22252 0.33475 0.33475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

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 0.309
C3 0.000 0.000 1.487
H4 0.000 1.033 -1.483
H5 0.895 -0.517 -1.483
H6 -0.895 -0.517 -1.483

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41512.59381.09971.09971.0997
N21.41511.17872.06822.06822.0682
C32.59381.17873.14483.14483.1448
H41.09972.06823.14481.78961.7896
H51.09972.06823.14481.78961.7896
H61.09972.06823.14481.78961.7896

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 110.019
N2 C1 H5 110.019 N2 C1 H6 110.019
H4 C1 H5 108.918 H4 C1 H6 108.918
H5 C1 H6 108.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.027      
2 N -0.104      
3 C -0.177      
4 H 0.085      
5 H 0.085      
6 H 0.085      


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 -3.803 3.803
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.451 0.000 0.000
y 0.000 -17.451 0.000
z 0.000 0.000 -21.108
Traceless
 xyz
x 1.828 0.000 0.000
y 0.000 1.828 0.000
z 0.000 0.000 -3.657
Polar
3z2-r2-7.314
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 2.918 0.000 0.000
y 0.000 2.918 0.000
z 0.000 0.000 5.518


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000