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1,3,2,5-Dioxadiphosphorinanes. Six-membered ring compounds containing two different phosphorus atoms

✍ Scribed by A. Tzschach; K. Jurkschat; A. Zschunke; C. Mügge; B. Altenbrunn; C. Piccinni-Leopardi; G. Germain; J. P. Declercq; M. Van Meerssche

Publisher
Springer
Year
1985
Tongue
English
Weight
356 KB
Volume
15
Category
Article
ISSN
1572-8854

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✍ Dr. J. Ebeling; Priv.-Doz. Dr. A. Schmidpeter 📂 Article 📅 1969 🏛 John Wiley and Sons 🌐 English ⚖ 134 KB 👁 1 views

The intermediates of this reaction should be 1.4-dihydroxy-8cyanoheptafulvenes, (3u) and (3b), which probably isomerize to each other through the tropone structures, (3c) or (3d). particularly under basic conditions. The compound ( 4 ) can be formed by intramolecular cyclization of ( 3 ~) .

(Ni3–xMgx)[B3P3O12(OH)6] · 6 H2O (x ≈ 1.
(Ni3–xMgx)[B3P3O12(OH)6] · 6 H2O (x ≈ 1.5): A Novel BorophosphateHydrate Containing Isolated Six-Membered Rings of Tetrahedra
✍ Insan Boy; Gerd Schäfer; Rüdiger Kniep 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 German ⚖ 180 KB 👁 1 views

A novel borophosphate-hydrate, (Ni 3±x Mg x )-[B 3 P 3 O 12 (OH) 6 ] ´6 H 2 O (x » 1.5), has been prepared by hydrothermal synthesis (T = 170 °C) from a mixture of NiCl 2 ´6 H 2 O, Mg(OH) 2 , B 2 O 3 and H 3 PO 4 . The crystal structure was determined at 293 K from single-crystal X-ray diffraction d

Six-membered ring phosphorus heterocycle
Six-membered ring phosphorus heterocycles. : Use of europium shift reagent in the analysis of the P.M.R. spectrum of trans-2-methyl-5-t-butyl-2-oxo-1,3,2-dioxaphosphorinane
✍ K.C. Yee; W.G. Bentrude 📂 Article 📅 1971 🏛 Elsevier Science 🌐 French ⚖ 199 KB

A considerable amount of work has been published1 in the past few years concerning the conformations of saturated six-membered ring heterocycles containing phosphorus including phosphites, phosphates, phosphonites and phosphonates. The bulk of these investigations has involved analysis of very comp