Chapter 3, Problem 3.28P

The thiazyldichloride ion, ${\text{NSCl}}_{\text{2}}\text{-}$ , is isoelectronic with thionyl dichloride, ${\text{OSCl}}_{\text{2}}$ .
a. Which of these species has the smaller $\text{Cl}—\text{S}—\text{Cl}$ angle? Explain briefly.
b. Which do you predict to have the longer $\text{S}—\text{Cl}$ bond? Why? (See E. Kessenich, F. Kopp,P. Mayer, A. Schulz, Angew. Chem., Int. Ed.,2001 , 40, 1904.)