Oligophosphanid‐Anionen: Synthesen und Molekülstrukturen von [K2(PMDETA)2(P4Ph4)], [K2(PMDETA)(P4tBu4)]2 und [K(PMDETA)(THF){cyclo‐(P5tBu4)}] (PMDETA = NMe(CH2CH2NMe2)2) |
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Authors: | Robert Wolf Evamarie Hey‐Hawkins |
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Abstract: | Oligophosphanide Anions: Syntheses and Molecular Structures of [K2(PMDETA)2(P4Ph4)], [K2(PMDETA)(P4tBu4)]2 and [K(PMDETA)(THF){cyclo‐(P5tBu4)}] (PMDETA = NMe(CH2CH2NMe2)2) The alkali metal tetraphosphanediides [K2(PMDETA)2(P4Ph4)] ( 1 ) and [K2(PMDETA)(P4tBu4)]2 ( 2 ) [PMDETA = NMe(CH2CH2NMe2)2] were synthesized via reaction of PhPCl2 or tBuPCl2 with 2.5 equiv. potassium and characterized by X‐ray crystallography and 31P NMR spectroscopy. As in other ion contact complexes of the type M2(P4R4) (M = alkali metal) the solid‐state structures are retained in solution. While 1 could be prepared in comparatively good yield (54 %), 2 was only isolated in very modest yield and with low purity as [K(PMDETA)(THF){cyclo‐(P5tBu4)}] ( 3 ) was formed as a side product in this case. 3 was also characterized by X‐ray crystallography and 31P NMR spectroscopy. |
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Keywords: | Alkali metals Phosphorus P ligands 31P NMR spectroscopy Tetraphosphane‐1,4‐diides |
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