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

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-488.866043
Energy at 298.15K-488.866366
HF Energy-488.772966
Nuclear repulsion energy78.052361
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 B2PLYP/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' 3803 3803 618.04      
2 A' 2159 2159 431.70      
3 A' 781 781 18.40      
4 A' 511 511 0.91      
5 A' 175 175 293.70      
6 A" 514 514 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 3971.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3971.1 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 B2PLYP/3-21G
ABC
245.46101 0.18475 0.18461

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.031 1.713 0.000
C2 0.000 0.528 0.000
S3 -0.001 -1.115 0.000
H4 0.236 2.673 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18562.82790.9966
C21.18561.64252.1584
S32.82791.64253.7953
H40.99662.15843.7953

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 178.456 C2 N1 H4 162.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.734      
2 C 0.148      
3 S 0.201      
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
  0.591 3.945 0.000 3.989
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.267 1.588 0.000
y 1.588 -16.485 0.000
z 0.000 0.000 -25.426
Traceless
 xyz
x -4.312 1.588 0.000
y 1.588 8.861 0.000
z 0.000 0.000 -4.549
Polar
3z2-r2-9.099
x2-y2-8.782
xy1.588
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.691 -0.039 0.000
y -0.039 8.339 0.000
z 0.000 0.000 1.661


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