| Abstract
| - The influence of angular bidentate- or tridentate N-donor ligands on the structures of a family of copper(I) iodide based coordination polymers is presented, and it is shown that angular ligands can significantly affect and control (CuI)n structures leading to unprecedented molecular architectures.
- A family of coordination polymers formed by the reaction of copper(I) iodide with a range of angular bidentate ortridentate N-donor ligands is reported. The framework polymers [CuI(dpt)]∞1 [dpt = 2,4-bis(4-pyridyl)-1,3,5-triazine],[CuI(dpb)]∞2 [dpb = 1,4-bis-(4-pyridyl)-benzene], [(CuI)3(dpypy)2]∞3, [CuI(dpypy)]∞4 [dpypy = 3,5-bis(4-pyridyl)-pyridine], and [Cu3I3(pypm)]∞5 [pypm = 5-(4-pyridyl)pyrimidine] have been prepared and structurally characterized.It was found that the angular nature of the dpypy and dpt ligands favors the formation of discrete (CuI)2 dimericsubunits as observed in [CuI(dpt)·MeCN]∞1 and [(CuI)3(dpypy)2]∞3. In contrast, reaction with the linear ligand dpbaffords [CuI(dpb)]∞2 which incorporates a one-dimensional (CuI)∞ chain structure. Moreover, the additional donoravailable on the central ring of the dpypy ligand generates a novel two-dimensional bilayer structure in 3, in contrastto the one-dimensional ribbon structure observed in the case of 1. Interestingly, the bilayer structure of 3 additionallyexhibits 2-fold interpenetration. The reaction of CuI with dpypy produces not only 3 but a further product [CuI(dpypy)]∞4 that has been characterized as a one-dimensional chain constructed from trigonal-planar Cu(I) centersbridged by bidentate dpypy ligands. Compound 5, [Cu3I3(pypm)]∞, exhibits a highly unusual three-dimensionalstructure in which the pypm ligand bridges two-dimensional brick-wall (CuI)∞ sheets.
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