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

using model chemistry: CCSD=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 CCSD=FULL/6-31G*
 hartrees
Energy at 0K-132.329069
Energy at 298.15K-132.331466
HF Energy-131.892488
Nuclear repulsion energy59.735608
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=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 3096 2941 17.44      
2 A1 2273 2158 117.67      
3 A1 1504 1428 4.19      
4 A1 983 934 19.63      
5 E 3182 3022 8.31      
5 E 3182 3022 8.31      
6 E 1540 1462 8.80      
6 E 1540 1462 8.80      
7 E 1177 1118 0.28      
7 E 1177 1118 0.28      
8 E 278 264 1.15      
8 E 278 264 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 10104.0 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 9596.8 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 CCSD=FULL/6-31G*
ABC
5.24956 0.33233 0.33233

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.114
N2 0.000 0.000 0.312
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
C11.42672.60431.09371.09371.0937
N21.42671.17762.06792.06792.0679
C32.60431.17763.14413.14413.1441
H41.09372.06793.14411.78511.7851
H51.09372.06793.14411.78511.7851
H61.09372.06793.14411.78511.7851

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 109.553
N2 C1 H5 109.553 N2 C1 H6 109.553
H4 C1 H5 109.389 H4 C1 H6 109.389
H5 C1 H6 109.389
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability