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• W2950493887 abstract "Dihydrogen tetrametaphosphate [P4O12H2]2– (1) can now be synthesized and isolated as its PPN salt ([PPN]+ = [N(PPh3)2]+) via treatment of [PPN]4[P4O12] with trifluoroacetic anhydride in wet acetone; this simple procedure affords the oxoacid salt in 94% yield. A pKa of 15.83 ± 0.11 in acetonitrile was determined. [P4O12H2]2– reacts with the dehydrating agent N,N′-dicyclohexylcarbodiimide to afford tetrametaphosphate anhydride [P4O11]2– (2) in 82% yield, also as the PPN salt. From 2 a monohydrogen tetrametaphosphate ester [P4O10(OH)(OMe)]2– (3, 96%) was derived by addition of methanol, illustrating that 2 can function as a reagent for chemical phosphorylation. Addition of water to 2 regenerates 1 quantitatively. Deprotonation of 1 by metal amides in the +2 oxidation state led to the unconventional monomeric tin(II) κ4 tetrametaphosphate [Sn(P4O12)]2– (4, 78%, a molecular analog of SnO) and binary dimeric chromium(II) bis(μ2,κ2,κ2) derivative [Cr2(P4O12)2]4– (5, 82%). Structural data stemming from single-crystal X-ray diffraction studies for the PPN salts of anions 1–5 are also reported." @default.
• W2950493887 created "2019-06-27" @default.
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• W2950493887 date "2014-08-14" @default.
• W2950493887 modified "2023-10-04" @default.
• W2950493887 title "Dihydrogen Tetrametaphosphate, [P₄O₁₂H₂]^2–: Synthesis, Solubilization in Organic Media, Preparation of its Anhydride [P₄O₁₁]^2– and Acidic Methyl Ester, and Conversion to Tetrametaphosphate Metal Complexes via Protonolysis" @default.
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• W2950493887 doi "https://doi.org/10.1021/ja5058339" @default.
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• W2950493887 hasPublicationYear "2014" @default.
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