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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-131.920590
Energy at 298.15K-131.923051
Nuclear repulsion energy59.692238
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 B1B95/3-21G
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 3078 2945 11.05      
2 A1 2215 2119 95.77      
3 A1 1482 1418 0.51      
4 A1 933 893 16.29      
5 E 3156 3019 6.83      
5 E 3156 3019 6.83      
6 E 1554 1487 14.83      
6 E 1554 1487 14.83      
7 E 1165 1115 0.08      
7 E 1165 1115 0.08      
8 E 306 292 3.20      
8 E 306 292 3.20      

Unscaled Zero Point Vibrational Energy (zpe) 10035.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9601.0 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 B1B95/3-21G
ABC
5.28099 0.33148 0.33148

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.116
N2 0.000 0.000 0.313
C3 0.000 0.000 1.493
H4 0.000 1.028 -1.485
H5 0.890 -0.514 -1.485
H6 -0.890 -0.514 -1.485

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42852.60901.09191.09191.0919
N21.42851.18052.07092.07092.0709
C32.60901.18053.15073.15073.1507
H41.09192.07093.15071.77971.7797
H51.09192.07093.15071.77971.7797
H61.09192.07093.15071.77971.7797

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 109.778
N2 C1 H5 109.778 N2 C1 H6 109.778
H4 C1 H5 109.163 H4 C1 H6 109.163
H5 C1 H6 109.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 N -0.560      
3 C 0.194      
4 H 0.260      
5 H 0.260      
6 H 0.260      


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 -3.741 3.741
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.507 0.000 0.000
y 0.000 -17.507 0.000
z 0.000 0.000 -20.583
Traceless
 xyz
x 1.538 0.000 0.000
y 0.000 1.538 0.000
z 0.000 0.000 -3.075
Polar
3z2-r2-6.151
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 2.518 0.000 0.000
y 0.000 2.518 0.000
z 0.000 0.000 4.864


<r2> (average value of r2) Å2
<r2> 42.893
(<r2>)1/2 6.549