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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-132.464635
Energy at 298.15K-132.467033
HF Energy-131.941913
Nuclear repulsion energy60.070498
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 CCSD/cc-pVTZ
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 3087 2905 16.50      
2 A1 2260 2127 133.15      
3 A1 1476 1389 6.67      
4 A1 972 915 17.36      
5 E 3170 2984 5.49      
5 E 3170 2984 5.49      
6 E 1518 1429 9.19      
6 E 1518 1429 9.19      
7 E 1166 1098 0.28      
7 E 1166 1098 0.28      
8 E 275 259 0.26      
8 E 275 259 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 10025.8 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 9436.3 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 CCSD/cc-pVTZ
ABC
5.31241 0.33569 0.33569

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.110
N2 0.000 0.000 0.314
C3 0.000 0.000 1.481
H4 0.000 1.024 -1.473
H5 0.887 -0.512 -1.473
H6 -0.887 -0.512 -1.473

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42352.59071.08691.08691.0869
N21.42351.16722.05982.05982.0598
C32.59071.16723.12673.12673.1267
H41.08692.05983.12671.77421.7742
H51.08692.05983.12671.77421.7742
H61.08692.05983.12671.77421.7742

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 109.539
N2 C1 H5 109.539 N2 C1 H6 109.539
H4 C1 H5 109.403 H4 C1 H6 109.403
H5 C1 H6 109.403
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability