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All results from a given calculation for S4N4 (Tetrasulfur tetranitride)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HF/SDD
 hartrees
Energy at 0K-1807.106321
Energy at 298.15K 
HF Energy-1807.106321
Nuclear repulsion energy755.357075
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 HF/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 620 559 0.00      
2 A1 590 531 0.00      
3 A1 201 181 0.00      
4 A2 674 607 0.00      
5 A2 254 228 0.00      
6 B1 501 451 0.00      
7 B1 346 312 0.00      
8 B2 907 817 32.49      
9 B2 518 467 94.17      
10 B2 177 159 0.01      
11 E 578 521 79.49      
11 E 578 521 79.49      
12 E 517 466 4.85      
12 E 517 466 4.85      
13 E 373 336 48.74      
13 E 373 336 48.74      
14 E 106i 95i 173.80      
14 E 106i 95i 173.80      

Unscaled Zero Point Vibrational Energy (zpe) 3756.8 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 3382.6 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 HF/SDD
ABC
0.04519 0.04519 0.03638

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.354 1.354 0.000
N2 -1.354 1.354 0.000
N3 -1.354 -1.354 0.000
N4 1.354 -1.354 0.000
S5 0.000 1.420 1.051
S6 0.000 -1.420 1.051
S7 1.420 0.000 -1.051
S8 -1.420 0.000 -1.051

Atom - Atom Distances (Å)
  N1 N2 N3 N4 S5 S6 S7 S8
N12.70843.83022.70841.71563.26121.71563.2612
N22.70842.70843.83021.71563.26123.26121.7156
N33.83022.70842.70843.26121.71563.26121.7156
N42.70843.83022.70843.26121.71561.71563.2612
S51.71561.71563.26123.26122.84022.90762.9076
S63.26123.26121.71561.71562.84022.90762.9076
S71.71563.26123.26121.71562.90762.90762.8402
S83.26121.71561.71563.26122.90762.90762.8402

picture of Tetrasulfur tetranitride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 S5 N2 104.246 N1 S7 N4 104.246
N2 S8 N3 104.246 N3 S6 N4 104.246
S5 N1 S7 115.856 S5 N2 S8 115.856
S6 N3 S8 115.856 S6 N4 S7 115.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.799      
2 N -0.799      
3 N -0.799      
4 N -0.799      
5 S 0.799      
6 S 0.799      
7 S 0.799      
8 S 0.799      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -87.273 0.000 0.000
y 0.000 -87.273 0.000
z 0.000 0.000 -69.416
Traceless
 xyz
x -8.929 0.000 0.000
y 0.000 -8.929 0.000
z 0.000 0.000 17.857
Polar
3z2-r235.714
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 17.293 0.000 0.000
y 0.000 17.293 0.000
z 0.000 0.000 10.406


<r2> (average value of r2) Å2
<r2> 353.280
(<r2>)1/2 18.796