Four new [Cu n I n ]-based coordination polymers, [{Cu 4 ( 3 -I) 4 (mbbm) 2 }·2DMF] n (1), [(CuI) 2 (mbbm) 2 ] n (2), [{Cu 2 (-I) 2 -(ebbm) 2 }·2MeCN] n (3), and [Cu 2 (-I) 2 (prbbm) 2 ] n (4), were prepared from solvothermal reactions of CuI with three flexible ligands [(bzim)(CH 2 ) n (bzim)] (bzim = benzimidazole; n = 1, mbbm; n = 2, ebbm; n = 3, prbbm). These compounds were characterized by elemental analysis, IR and X-ray crystallography. 1 consists of cubanelike [Cu 4 ( 3 -I) 4 ] fragments that link the neighboring ones via mbbm bridges to form a 1D ladder-type chain. 2 contains mononuclear [CuI] fragments that are bridged by mbbm ligands to yield a 1D zigzag chain. 3 or 4 contains a [Cu 2 (-I) 2 ] dimeric fragment, which works as a four-connecting node to link its four equivalent ones to form a 2D (4,4) network (3) or acts as a two-connecting node to connect its two equivalent ones via two pairs of prbbm bridges to form a 1D double chain (4). The photoluminescent properties of 1-4 in the solid state at ambient temperature were investigated. coordination polymers, assembly, flexible ligands, solvothermal reactions, photoluminescent properties
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