Portal de Periódicos da CAPES

Über die Nichtexistenz eines einfachen μ-oxo-Diphosphorans mit zwei 1.3.5.7-Tetramethyl-1.3.5.7-tetra-aza-4λ 5 -phosphaspiro[3.3]heptan- 2.6-dion-Gruppierungen: Darstellung und Struktur eines zweifach mit N,Nʹ-Dimethylharnstoff überbrückten λ 5 P–O–λ 5 P-Diphosphorans/On the Nonexistence of a Simple μ-Oxo-diphosphorane Involving two 1,3.5.7-Tetramethyl-1.3.5.7-tetra-aza-4λ 5 -phospha-spiro[3.3]heptane-2.6-dione Groupings: Preparation and Structure of a λ …

1986; De Gruyter; Volume: 41; Issue: 2 Linguagem: Inglês

10.1515/znb-1986-0210

1865-7117

Dietmar Schomburg, Ulrich Wermuth, Reinhard Schmutzler,

Organometallic Compounds Synthesis and Characterization

The reaction between the spiro-chlorophosphorane, [O = C (NMe) 2 ] 2 PX (X = Cl), and the related trimethylsiloxy compound (X = OSiMe 3 ) was expected to give rise to the formation of a μ-oxo-bis(spirophosphorane), [[O = C(NMe) 2 ] 2 P] 2 O. Instead, an isomer of the expected compound, with two N.Nʹ-dimethylurea bridges across a λ 5 P-O-λ 5 P bond system was obtained. The identity of the product was established by spectroscopic means (IR , NMR, mass spectroscopy), and by a single crystal X-ray diffraction study.