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All results from a given calculation for CH3NCO (methylisocyante)

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 Cs 1A'
Energy calculated at CCSD=FULL/6-31G*
 hartrees
Energy at 0K-207.408858
Energy at 298.15K 
HF Energy-206.788350
Nuclear repulsion energy103.611170
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*
Rotational Constants (cm-1) from geometry optimized at CCSD=FULL/6-31G*
ABC
2.57618 0.14460 0.14059

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.356 1.093 0.000
N2 0.000 0.594 0.000
C3 -0.562 -0.473 0.000
O4 -1.235 -1.446 0.000
H5 1.323 2.184 0.000
H6 1.894 0.756 0.893
H7 1.894 0.756 -0.893

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44532.47653.62741.09201.09511.0951
N21.44531.20602.38402.06892.10022.1002
C32.47651.20601.18243.25822.88812.8881
O43.62742.38401.18244.44063.92873.9287
H51.09202.06893.25824.44061.77831.7783
H61.09512.10022.88813.92871.77831.7855
H71.09512.10022.88813.92871.77831.7855

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.973 N2 C1 H5 108.450
N2 C1 H6 110.773 N2 C1 H7 110.773
N2 C3 O4 173.096 H5 C1 H6 108.792
H5 C1 H7 108.792 H6 C1 H7 109.211
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability