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All results from a given calculation for HNCO (Isocyanic acid)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-168.241459
Energy at 298.15K 
HF Energy-167.766414
Nuclear repulsion energy58.471725
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 MP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
ABC
28.60843 0.35974 0.35528

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.587 -1.139 0.000
N2 0.587 -1.025 0.000
C3 0.000 0.053 0.000
O4 -0.712 0.999 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00571.98483.1397
N21.00571.22802.4057
C31.98481.22801.1842
O43.13972.40571.1842

picture of Isocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 C3 125.088 N2 C3 O4 171.597
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability