Crystal engineering: the effects of π–π interactions in copper(i) and silver(i) complexes of 2,7-diazapyrene

Abstract

The ligand 2,7-diazapyrene (L) is used to construct three- and two-dimensional arrays with Cu I and Ag I ions: {[Cu I L 2 ]PF 6 } ∞ shows an adamantoid network with three interpenetrating networks, while {[Ag I L 2 (MeCN) 2 ]BF 4 } ∞ forms linear chains of [AgL] ∞ units linked by apparent π–π stacking and Ag···Ag interactions between adjacent diazapyrene ligands to form two-dimensional sheets.