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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-132.488644
Energy at 298.15K-132.491063
HF Energy-131.941227
Nuclear repulsion energy60.161551
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3123 2965 12.44      
2 A1 2184 2074 74.63      
3 A1 1473 1399 4.29      
4 A1 979 929 15.75      
5 E 3205 3043 2.31      
5 E 3205 3043 2.31      
6 E 1526 1449 10.57      
6 E 1526 1449 10.57      
7 E 1162 1103 0.03      
7 E 1162 1103 0.03      
8 E 283 268 0.02      
8 E 283 268 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10055.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 9546.5 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/cc-pVTZ
ABC
5.35558 0.33699 0.33699

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

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 0.308
C3 0.000 0.000 1.480
H4 0.000 1.021 -1.466
H5 0.884 -0.510 -1.466
H6 -0.884 -0.510 -1.466

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41432.58611.08231.08231.0823
N21.41431.17182.04672.04672.0467
C32.58611.17183.11773.11773.1177
H41.08232.04673.11771.76791.7679
H51.08232.04673.11771.76791.7679
H61.08232.04673.11771.76791.7679

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 109.420
N2 C1 H5 109.420 N2 C1 H6 109.420
H4 C1 H5 109.523 H4 C1 H6 109.523
H5 C1 H6 109.523
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability