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All results from a given calculation for HNCS (Isothiocyanic acid)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-491.624307
Energy at 298.15K-491.625082
HF Energy-491.624307
Nuclear repulsion energy80.062259
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 mPW1PW91/6-31G(2df,p)
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' 3750 3580 268.16      
2 A' 2105 2010 691.87      
3 A' 897 856 4.36      
4 A' 635 606 318.33      
5 A' 468 447 114.94      
6 A" 508 485 1.23      

Unscaled Zero Point Vibrational Energy (zpe) 4180.9 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 3991.5 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 mPW1PW91/6-31G(2df,p)
ABC
36.90823 0.19716 0.19611

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.142 1.683 0.000
C2 0.000 0.493 0.000
S3 0.030 -1.074 0.000
H4 0.513 2.442 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19922.76281.0025
C21.19921.56702.0158
S32.76281.56703.5491
H41.00252.01583.5491

picture of Isothiocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 174.289 C2 N1 H4 132.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.532      
2 C 0.400      
3 S -0.200      
4 H 0.332      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.105 1.836 0.000 2.143
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.008 2.975 0.000
y 2.975 -18.873 0.000
z 0.000 0.000 -24.834
Traceless
 xyz
x -2.155 2.975 0.000
y 2.975 5.548 0.000
z 0.000 0.000 -3.394
Polar
3z2-r2-6.787
x2-y2-5.135
xy2.975
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.091 -0.136 0.000
y -0.136 8.783 0.000
z 0.000 0.000 2.979


<r2> (average value of r2) Å2
<r2> 60.229
(<r2>)1/2 7.761