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

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-489.118212
Energy at 298.15K-489.118791
HF Energy-489.118212
Nuclear repulsion energy77.782794
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/3-21G
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' 3609 3589 336.84      
2 A' 2091 2079 398.77      
3 A' 781 777 6.04      
4 A' 501 498 14.42      
5 A' 387 385 342.81      
6 A" 507 504 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 3937.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3915.5 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/3-21G
ABC
70.64775 0.18447 0.18399

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.068 1.724 0.000
C2 0.000 0.525 0.000
S3 0.003 -1.114 0.000
H4 0.424 2.608 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20082.83941.0115
C21.20081.63962.1253
S32.83941.63963.7458
H41.01152.12533.7458

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 176.867 C2 N1 H4 147.637
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.662      
2 C 0.084      
3 S 0.236      
4 H 0.341      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.996 3.194 0.000 3.346
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.646 2.650 0.000
y 2.650 -17.718 0.000
z 0.000 0.000 -25.142
Traceless
 xyz
x -3.216 2.650 0.000
y 2.650 7.176 0.000
z 0.000 0.000 -3.960
Polar
3z2-r2-7.920
x2-y2-6.928
xy2.650
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.815 -0.024 0.000
y -0.024 8.342 0.000
z 0.000 0.000 1.706


<r2> (average value of r2) Å2
<r2> 63.399
(<r2>)1/2 7.962

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-489.117598
Energy at 298.15K 
HF Energy-489.117598
Nuclear repulsion energy77.792017
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/3-21G
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 3739 3718 616.45      
2 Σ 2142 2130 396.53      
3 Σ 771 767 16.86      
4 Π 513 510 0.03      
4 Π 513 510 0.03      
5 Π 258i 257i 209.33      
5 Π 258i 257i 209.33      

Unscaled Zero Point Vibrational Energy (zpe) 3580.8 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3561.1 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/3-21G
B
0.18328

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.717
C2 0.000 0.000 -0.527
S3 0.000 0.000 1.119
H4 0.000 0.000 -2.718

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19062.83611.0011
C21.19061.64562.1916
S32.83611.64563.8372
H41.00112.19163.8372

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 BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.703      
2 C 0.136      
3 S 0.211      
4 H 0.355      


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 -3.863 3.863
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.111 0.000 0.000
y 0.000 -25.111 0.000
z 0.000 0.000 -15.822
Traceless
 xyz
x -4.644 0.000 0.000
y 0.000 -4.644 0.000
z 0.000 0.000 9.289
Polar
3z2-r218.578
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 1.704 0.000 0.000
y 0.000 1.704 0.000
z 0.000 0.000 8.128


<r2> (average value of r2) Å2
<r2> 63.477
(<r2>)1/2 7.967