Abstract
2-Phenylselenomethyl-1H-benzimidazole (psbi) can form complexes in 2:1 ratio with coinage metal ions. Crystal structure anal. revealed a flattened metal coordination for AgI(psbi)2(BF4) (1), approaching a distorted-planar arrangement with weak Ag-Se bonds (d \textgreater 2.9 \AA) and confirmed as energy min. by DFT calcns. The typical Jahn-Teller system CuII(psbi)2Cl2 (2) exhibits a planar CuN2Cl2 core with weak Se···Cu···Se axial ligation 3.2944(8) \AA Cu···Se distance. The oxygen-sensitive compd. CuI(psbi)2(BF4) (3) exhibits electrochem. reversible oxidn. in contrast to the silver(I) analog 1. on SciFinder(R)
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