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

using model chemistry: B3PW91/aug-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 B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-132.711224
Energy at 298.15K-132.713632
HF Energy-132.711224
Nuclear repulsion energy60.275709
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/aug-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 3052 2946 16.20      
2 A1 2246 2167 135.27      
3 A1 1446 1395 3.11      
4 A1 972 938 10.37      
5 E 3129 3020 4.04      
5 E 3129 3020 4.04      
6 E 1483 1431 11.68      
6 E 1483 1431 11.68      
7 E 1140 1101 0.02      
7 E 1140 1101 0.02      
8 E 282 272 0.29      
8 E 282 272 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 9892.3 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 9547.1 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/aug-cc-pVTZ
ABC
5.30571 0.33882 0.33882

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.104
N2 0.000 0.000 0.311
C3 0.000 0.000 1.476
H4 0.000 1.026 -1.470
H5 0.889 -0.513 -1.470
H6 -0.889 -0.513 -1.470

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41542.57951.08941.08941.0894
N21.41541.16412.05592.05592.0559
C32.57951.16413.11923.11923.1192
H41.08942.05593.11921.77711.7771
H51.08942.05593.11921.77711.7771
H61.08942.05593.11921.77711.7771

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 109.640
N2 C1 H5 109.640 N2 C1 H6 109.640
H4 C1 H5 109.301 H4 C1 H6 109.301
H5 C1 H6 109.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.294      
2 N 0.112      
3 C -0.665      
4 H 0.282      
5 H 0.282      
6 H 0.282      


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 -17.827 0.000 0.000
y 0.000 -17.827 0.000
z 0.000 0.000 -21.631
Traceless
 xyz
x 1.902 0.000 0.000
y 0.000 1.902 0.000
z 0.000 0.000 -3.804
Polar
3z2-r2-7.608
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 3.828 0.000 0.000
y 0.000 3.829 0.000
z 0.000 0.000 6.238


<r2> (average value of r2) Å2
<r2> 42.622
(<r2>)1/2 6.529