Phosphorus, Copper Compounds, Crystal Structure (CuI)2Pi4 is a new adduct of copper iodide to a neutral phosphorus polymer. It is obtained by reaction of Cul and Pred at 400 °C. The compound crystallizes monoclinically, space group P2,/c (No. 14), a = 9.919 (2), b = 9.718(2), c = 16.478(3) Ä, ß = 105.71(1)°, V = 1529.0(7) A3, with Z = 4. The crystal structure was refined to R\ = 0.029 for 2680 reflections and 173 parameters. It contains a new polymeric phosphorus allotrope with the translational unit P^° consisting of experimentally unknown [PI2] groups which are linked by [P2] fragments. The phosphorus rods consist of five-and six-membered rings, and are coordinated only by copper atoms.
Einleitung
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