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All results from a given calculation for HOCN (cyanic acid)

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G*
 hartrees
Energy at 0K-32.049308
Energy at 298.15K-32.050221
Nuclear repulsion energy30.304149
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 B1B95/CEP-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 A' 3813 3649 148.15      
2 A' 2390 2287 154.52      
3 A' 1231 1178 118.61      
4 A' 1118 1070 66.43      
5 A' 449 430 15.70      
6 A" 507 485 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 4753.2 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 4549.7 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 B1B95/CEP-31G*
ABC
21.94798 0.34467 0.33934

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.065 1.356 0.000
C2 0.000 0.176 0.000
O3 -0.148 -1.125 0.000
H4 0.727 -1.552 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.18172.49042.9828
C21.18171.30981.8752
O32.49041.30980.9736
H42.98281.87520.9736

picture of cyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 176.679 C2 O3 H4 109.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.275      
2 C -0.459      
3 O -0.265      
4 H 0.449      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.566 -3.649 0.000 3.971
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.074 -3.270 0.000
y -3.270 -18.027 0.000
z 0.000 0.000 -16.654
Traceless
 xyz
x 2.266 -3.270 0.000
y -3.270 -2.163 0.000
z 0.000 0.000 -0.103
Polar
3z2-r2-0.206
x2-y22.953
xy-3.270
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.882 -0.053 0.000
y -0.053 4.233 0.000
z 0.000 0.000 1.635


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000