Beiträge zur Chemie des Phosphors. 157. Dilithium-hexadecaphosphid,Li2P16: Darstellung aus Li2HP7 und 31P-NMR-spektroskopische Strukturbestimmung |
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Authors: | M Baudler R Heumüller J Hahn |
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Abstract: | Contributions to the Chemistry of Phosphorus. 157. Dilithium Hexadecaphosphide, Li2P16: Preparation from Li2HP7 and Structure Determination by 31P-NMR Spectroscopy . Dilithium hexadecaphosphide, Li2P16 ( 1 ), is purely obtained as a crystalline solvent adduct Li2P16 · 8 THF by the disproportionation of Li2HP7 in tetrahydrofuran under suitable conditions. The constitution of 1 has been deduced from its 1D- and 2D-31P-NMR spectrum (in dimethylformamide). The structure of the P162? ion in solution is identical with that in solid (Ph4P)2P16 20]. As a conjuncto-phosphane the P162? is made up of two P9(3)?-unit groups analogous to deltacyclane, which are linked via the diatomic bridges as a common zero-bridge. |
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