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

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-103.524943
Energy at 298.15K 
HF Energy-103.524943
Nuclear repulsion energy44.230757
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 B3LYP/LANL2DZ
Rotational Constants (cm-1) from geometry optimized at B3LYP/LANL2DZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-103.525188
Energy at 298.15K-103.525386
HF Energy-103.525188
Nuclear repulsion energy44.093873
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 B3LYP/LANL2DZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3930 3777 689.54      
2 Σ 2143 2059 603.21      
3 Σ 782 751 21.37      
4 Π 449 431 10.35      
4 Π 449 431 10.35      
5 Π 223 215 230.14      
5 Π 223 215 230.14      

Unscaled Zero Point Vibrational Energy (zpe) 4099.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 3939.9 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 B3LYP/LANL2DZ
B
0.18424

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.715
C2 0.000 0.000 -0.520
S3 0.000 0.000 1.115
H4 0.000 0.000 -2.712

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19532.83050.9961
C21.19531.63532.1913
S32.83051.63533.8266
H40.99612.19133.8266

picture of Isothiocyanic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 180.000 C2 N1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.206      
2 C -0.207      
3 S 0.027      
4 H 0.385      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.444 3.444
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.684 0.000 0.000
y 0.000 -24.684 0.000
z 0.000 0.000 -15.604
Traceless
 xyz
x -4.540 0.000 0.000
y 0.000 -4.540 0.000
z 0.000 0.000 9.080
Polar
3z2-r218.161
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.518 0.000 0.000
y 0.000 1.518 0.000
z 0.000 0.000 8.778


<r2> (average value of r2) Å2
<r2> 50.563
(<r2>)1/2 7.111