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

using model chemistry: B1B95/STO-3G

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/STO-3G
 hartrees
Energy at 0K-130.981636
Energy at 298.15K-130.983953
Nuclear repulsion energy58.527379
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/STO-3G
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 3308 2921 0.23      
2 A1 2291 2023 134.18      
3 A1 1549 1367 4.33      
4 A1 998 881 7.03      
5 E 3475 3069 1.06      
5 E 3475 3069 1.06      
6 E 1628 1437 9.65      
6 E 1628 1437 9.65      
7 E 1185 1046 0.17      
7 E 1185 1046 0.17      
8 E 293 259 1.40      
8 E 293 259 1.40      

Unscaled Zero Point Vibrational Energy (zpe) 10653.3 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 9406.8 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 B1B95/STO-3G
ABC
5.15376 0.31791 0.31791

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.140
N2 0.000 0.000 0.318
C3 0.000 0.000 1.526
H4 0.000 1.040 -1.513
H5 0.901 -0.520 -1.513
H6 -0.901 -0.520 -1.513

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.45812.66631.10491.10491.1049
N21.45811.20822.10572.10572.1057
C32.66631.20823.21223.21223.2122
H41.10492.10573.21221.80151.8015
H51.10492.10573.21221.80151.8015
H61.10492.10573.21221.80151.8015

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 109.718
N2 C1 H5 109.718 N2 C1 H6 109.718
H4 C1 H5 109.223 H4 C1 H6 109.223
H5 C1 H6 109.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.134      
2 N -0.252      
3 C 0.034      
4 H 0.118      
5 H 0.118      
6 H 0.118      


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 -3.111 3.111
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.154 0.000 0.000
y 0.000 -16.154 0.000
z 0.000 0.000 -19.192
Traceless
 xyz
x 1.519 0.000 0.000
y 0.000 1.519 0.000
z 0.000 0.000 -3.037
Polar
3z2-r2-6.075
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 1.347 0.000 0.000
y 0.000 1.346 0.000
z 0.000 0.000 3.253


<r2> (average value of r2) Å2
<r2> 43.318
(<r2>)1/2 6.582