Crystal Structures of Two New Iodine Clusters: Tetranuclear [H _2dabco](I _4) (Dabco = 1,4-Diazabicyclo[2,2,2]octane) and Chained [Dedabco](I _3) _2 (Dedabco ~(2+) = N,N′-Diethyl-1,4-Diazabicyclo[2,2,2]octane)

摘要

At the ambient condition, the simple self-assembly between ZnI _2, KI, and dabco in acidic H _2O/C _2H _5OH solution produced a tetranuclear iodine cluster with diprotonated dabco as the cation [H _2dabco](I _4) (dabco = 1,4-diazabicyclo[2,2,2]octane) 1. But the same precursors reacted under the solvothermal condition, producing a chained iodine cluster polymer with dedabco ~(2+) as the cation [dedabco](I _3) _2 (dedabco ~(2+) = N,N′-diethyl-1,4-diazabicyclo[2,2,2]octane) 2. Note that dedabco ~(2+) originated from the solvothermal in situ N-alkylation of dabco with C _2H _5OH solvent in acidic KI solution.