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

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-132.388490
Energy at 298.15K-132.390865
HF Energy-131.926079
Nuclear repulsion energy59.754104
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 QCISD/6-311G**
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 3082 2940 19.28      
2 A1 2227 2125 134.02      
3 A1 1482 1414 7.38      
4 A1 973 928 18.25      
5 E 3167 3022 8.70      
5 E 3167 3022 8.70      
6 E 1519 1449 8.99      
6 E 1519 1449 8.99      
7 E 1167 1114 0.64      
7 E 1167 1114 0.64      
8 E 266 254 0.65      
8 E 266 254 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 10001.5 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 9542.5 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 QCISD/6-311G**
ABC
5.24964 0.33233 0.33233

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

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 0.314
C3 0.000 0.000 1.490
H4 0.000 1.031 -1.480
H5 0.893 -0.515 -1.480
H6 -0.893 -0.515 -1.480

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.43002.60641.09271.09271.0927
N21.43001.17642.06832.06832.0683
C32.60641.17643.14343.14343.1434
H41.09272.06833.14341.78501.7850
H51.09272.06833.14341.78501.7850
H61.09272.06833.14341.78501.7850

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 109.417
N2 C1 H5 109.417 N2 C1 H6 109.417
H4 C1 H5 109.525 H4 C1 H6 109.525
H5 C1 H6 109.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability