ClSCN


















 





 









Chlorine and Nitrogen



Nuclear Quadrupole Coupling Constants


in Chlorine Thiocyanate



 








 








 








An "adjusted ro" structure of ClSCN was derived by Durig et al. [1].  "approximate Cl nuclear quadrupole coupling constants" were determined by Richards et al. [2].  Calculations of the chlorine and nitrogen nqcc tensors were made here on this structure.  These are given in Tables 1 and 2.  Structure parameters are given in Table 3.

 








In Tables 1 and 2, subscripts a,b,c refer to the principal axes of the inertia tensor.   Subscripts x,y,z refer to the principal axes of the nqcc tensor.  The y-axis is chosen coincident with the c-axis.  Ø (degrees) is the angle between its subscripted parameters.  ETA = (Xxx - Xyy)/Xzz.

RSD is the residual standard deviation of calibration of the computational model for calculation of the nqcc's.

 








 








   







Table 1.  Chlorine nqcc's in ClSCN (MHz).

   








Calc.
Expt. [2]


 







35Cl Xaa -
29.62
-
36.(4)



Xbb - Xcc -
67.82
-
65(1)



Xbb -
19.10




  Xcc
48.72





|Xab|
64.32




 







RSD
0.49 (1.1 %)




 







Xxx
40.18





Xyy
48.72





Xzz -
88.89





ETA
0.0961





Øz,a
42.66





Øa,SCl
43.57





Øz,SCl
  0.91




 






37Cl Xaa -
24.38





Xbb -
14.01





Xcc
38.39





|Xab|
50.59




 







RSD
0.44 (1.1 %)




 







 








 








   







Table 2.  Nitrogen nqcc's in ClSCN (MHz).

   








Calc.
Expt.


 







14N in
Xaa -
2.063




35Cl species
Xbb
1.270




  Xcc
0.793





|Xab|
3.491




 







RSD
0.030 (1.3 %)




 







Xxx
3.472





Xyy
0.793





Xzz -
4.264





ETA -
0.628





Øz,a
32.24





Øa,CN
31.23





Øz,CN
  1.01




 






14N in Xaa -
1.990




37Cl species Xbb
1.197





Xcc
0.793





|Xab|
3.524




 







RSD
0.030 (1.3 %)



 







 








 








Table 3.  ClSCN Molecular Structure, ro [1] ClS = 2.023(5) Å





SC = 1.694(3) Å





CN = 1.156(3) Å





ClSC = 99.6(5)o





SCN = 174.4(5)o

 








 








[1] J.R.Durig, C.Zheng, H.Deeb, J.Mol.Struct. 784,78(2006).


[2] R.J.Richards, R.W.Davis, and M.C.L.Gerry, J.Chem.Soc. Chem.Commun. 915(1980).


 








 








BrSCNClSF
SCl2
CH3SCl O=SCl2
ClSSCl




 








 








Table of Contents




Molecules/Chlorine




Molecules/Nitrogen




 








 













ClSCN.html






Last Modified 22 Dec 2011