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

using model chemistry: MP2=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-132.118167
Energy at 298.15K-132.120504
HF Energy-131.828799
Nuclear repulsion energy58.862286
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 MP2=FULL/6-31G
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 3092 2938 15.37      
2 A1 2069 1966 60.60      
3 A1 1522 1446 1.58      
4 A1 922 876 24.47      
5 E 3187 3028 8.35      
5 E 3187 3028 8.35      
6 E 1563 1485 11.40      
6 E 1563 1485 11.40      
7 E 1192 1132 0.67      
7 E 1192 1132 0.67      
8 E 256 243 2.29      
8 E 256 243 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 10000.3 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 9501.3 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 MP2=FULL/6-31G
ABC
5.23298 0.32146 0.32146

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.135
N2 0.000 0.000 0.314
C3 0.000 0.000 1.519
H4 0.000 1.032 -1.500
H5 0.894 -0.516 -1.500
H6 -0.894 -0.516 -1.500

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.44832.65371.09491.09491.0949
N21.44831.20542.08662.08662.0866
C32.65371.20543.19043.19043.1904
H41.09492.08663.19041.78791.7879
H51.09492.08663.19041.78791.7879
H61.09492.08663.19041.78791.7879

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 109.479
N2 C1 H5 109.479 N2 C1 H6 109.479
H4 C1 H5 109.463 H4 C1 H6 109.463
H5 C1 H6 109.463
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability