return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-491.674705
Energy at 298.15K-491.675447
HF Energy-491.674705
Nuclear repulsion energy79.334464
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 BLYP/6-311+G(3df,2p)
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' 3564 3544 181.78      
2 A' 1968 1957 639.87      
3 A' 852 847 0.92      
4 A' 677 673 324.43      
5 A' 449 446 47.05      
6 A" 470 468 5.86      

Unscaled Zero Point Vibrational Energy (zpe) 3989.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3967.5 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 BLYP/6-311+G(3df,2p)
ABC
34.30809 0.19377 0.19268

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.165 1.698 0.000
C2 0.000 0.496 0.000
S3 0.041 -1.083 0.000
H4 0.504 2.458 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21352.78841.0129
C21.21351.57912.0262
S32.78841.57913.5713
H41.01292.02623.5713

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 173.659 C2 N1 H4 130.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.714      
2 C 0.502      
3 S -0.027      
4 H 0.239      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.065 1.407 0.000 1.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.774 2.967 0.000
y 2.967 -19.942 0.000
z 0.000 0.000 -25.606
Traceless
 xyz
x -2.000 2.967 0.000
y 2.967 5.248 0.000
z 0.000 0.000 -3.248
Polar
3z2-r2-6.496
x2-y2-4.832
xy2.967
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.320 -0.265 0.000
y -0.265 10.184 0.000
z 0.000 0.000 4.294


<r2> (average value of r2) Å2
<r2> 61.573
(<r2>)1/2 7.847