Self-assembly, Crystal Structure and Fluorescent Property of a Coordination Polymer [(Cu₄I₆)(BPE)]_n

Abstract

A novel coordination polymer [(Cu 4 I 6 )(BPE)] n (BPE = 1, 2-bis(pyridinium) ethane dication) is obtained and characterized by X-ray crystallography and IR spectroscopy. The complex crystallizes in monoclinic system, space group C2(1)/c with cell parameters of a = 16.5429(19)Å, b = 10.0645(12)Å, c = 11.7139(13) A, α = 90.00 • , β = 99.0910(10) • , γ = 90.00 • . In the polymeric framework, [Cu 4 I 6 ] n dimers are bridged together by the two µ 2 -I ligands to constitute an infinite 1D chain with the organic dication BPE trapped in it. Photoluminescence investigation of the complex reveals that a red shift of 67 nm for the complex takes place, compared with the organic dication.

Reactivity of Polyiodide Toward 1,6-Bis(pyridinium)hexane (bphx): Syntheses and Structures of Two Organic-Inorganic Hybrid Clusters [(bphx)3·(Pb3I8Br4)] and [(bphx)2·(Cu4I8)]

“…In summary, we have successfully synthesized and structurally characterized two novel multinuclear polymeric complexes, which are composed by inorganic [Pb 3 I 8 Br 4 ] 6− and [Cu 4 I 8 ] 4− chains and 1,6-bis(pyridinium)hexane dication. In these structures, the organic cations play template function, which result in the difference of the final anionic aggregates and physicochemical properties.…”

“…The tetrahedral is distorted because of the templating effect of the organic quaternary ammonium cation. Whereas in the structure of {[(Cu 4 I 6 )·(bpe)]} n (bpe = 1, 2-bis(pyridinium) ethane dication), [8] there is an infinite Cu 4 I 6 2− chain, and compound {(bpa) 2 ·[Cu 2 I 6 ]} n (bpa = CH 2 (C 5 H 5 N) 2 ) [15] possesses a dinuclear anion unit. So compound 2 is different from these similar compounds, and the template effect of bphx should stay in between the bpa and bpe.…”

“…The whole crystal structure of 1 consists of the organic and inorganic moiety. The inorganic moiety is a trinuclear [Pb 3 I 8 Br 4 ] 6− chain. As shown in Figure 1, 2 there are two independent Pb in each unit.…”

“…More importantly, the self-assembly reaction of metal iodides with rigid and flexible organic groups is an effective route for the preparation of the novel cluster based materials. A series of compounds of this kind have been synthesized, such as {[(Ag 2 I 4 )· (bpe)]} n , [5] {[(Cu 4 I 6 )·(bpe)]} n (bpe = 1, 2-bis(pyridinium) ethane dication), [8] and {[(Pb 2 I 6 )·(C 14 H 18 N 2 )]} n , [9] etc. In these compounds, the organic moiety as structure-directing agents, their properties, such as length, geometry, and relative orientation, play a very important role in dictating inorganic polymer framework topology.…”

Syntheses, Crystal Structures, and Ultraviolet Properties of a Coordination Polymer [(Ag2I4)(EV)]n

“…So our group attempted to synthesize hybrid compounds with organic templated cations. [12,13] The metal halides play an important role in the various hybrid functional materials. As a branch of the metal halides, silver(I) halides occupy an important position.…”