1984
DOI: 10.1002/zaac.19845140702
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Beiträge zur Chemie des Phosphors. 140. Dilithium‐hydrogenheptaphosphid, Li2HP7 – ein teilmetalliertes Derivat von P7H3: Darstellung und strukturelle Charakterisierung

Abstract: Dilithium‐hydrogenheptaphosphid, Li2HP7 (2), wird durch Reaktion von P2H4 mit n‐BuLi oder Li3P7 (1) unter geeigneten Bedingungen als orangerotes Lösungsmitteladdukt rein erhalten. Verbindung 2 wird außerdem bei der Metallierung von LiH2P7 (3) oder P7H3, der Disproportionierung von LiH4P5, der partiellen Protolyse von 1 und der nucleophilen Spaltung von P4 gebildet. Zusammensetzung und Struktur von 2 konnten durch vollständige Analyse des Tieftemperatur‐31P{1H}‐NMR‐Spektrums ermittelt werden. Aus den δ(31P)‐Wer… Show more

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Cited by 35 publications
(9 citation statements)
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“…As a result of its similarity with the hydrocarbon dihydrobullvalene,232 the HP72" ion is capable to undergo a degenerate Cope rearrangement233 and can be described at room temperature by two structurally identical valency tautomers. 226 As can be seen, opening of the bond between P2 and P6 in the three-membered ring and formation of a bond between the bridging atoms P3 and P5 with concomitant migration of the two negative charges to the atoms P2 and P6 regenerate the unchanged HP72_ ion. On the other hand, in 49 there is no evidence for an intraor intermolecular metal/ hydrogen exchange.…”
Section: Reactions With Ring Cleavagementioning
confidence: 97%
“…As a result of its similarity with the hydrocarbon dihydrobullvalene,232 the HP72" ion is capable to undergo a degenerate Cope rearrangement233 and can be described at room temperature by two structurally identical valency tautomers. 226 As can be seen, opening of the bond between P2 and P6 in the three-membered ring and formation of a bond between the bridging atoms P3 and P5 with concomitant migration of the two negative charges to the atoms P2 and P6 regenerate the unchanged HP72_ ion. On the other hand, in 49 there is no evidence for an intraor intermolecular metal/ hydrogen exchange.…”
Section: Reactions With Ring Cleavagementioning
confidence: 97%
“…Das Spektrum von [P 26 ] 4− ist dem ähnlich, mit neun Signalgruppen zwischen δ =−169 und +84 ppm 283. 284…”
Section: Nmr‐spektroskopieunclassified
“…[P 21 ] 3− has eight different groups of signals in the range from δ =+72 to −169 ppm, and the [P 26 ] 4− anion has a similar spectrum with nine different groups of signals in the range from δ =+84 to −169 ppm 283. 284…”
Section: Nmr Spectroscopymentioning
confidence: 99%