Volume 7, Issue 2 pp. 111-118

Synthesis, crystal structure, and NMR spectroscopy of a 1,3,2λ5,4λ5-oxathiadiphosphetane

Haiko Beckmann

Haiko Beckmann

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, Germany

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Gisela Ohms

Gisela Ohms

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, Germany

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Gisbert Großmann

Corresponding Author

Gisbert Großmann

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, Germany

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, GermanySearch for more papers by this author
Kerstin Krüger

Kerstin Krüger

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, Germany

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Klaus Klostermann

Klaus Klostermann

Institut für Analytische Chemie der Technischen Universität Dresden, Mommsenstr. 13, D-01062 Dresden, Germany

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Volker Kaiser

Volker Kaiser

Institut für Anorganische und Analytische Chemie der Technischen Universität Clausthal, Paul-Ernst-Str. 4, D-38678 Clausthal-Zellerfeld, Germany

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Abstract

From the crude product of the synthesis of the dithiadiphosphetane [RP(S)S]2 (with R = 2,4,6-iPr3C6H2), the trans-oxathiadiphosphetane chemical structure image has been isolated, C30H40OP2S3. X-ray structure analysis and mass spectroscopic investigations give unequivocal evidence for this structure: monoclinic, C2/c (no. 15), a = 13.066(8), b = 21.726(8), c = 12.070(6) Å, β = 103.54(10)°, V = 3331 Å3, Z = 4, and Dc = 1.158 g/cm3. The asymmetric unit consists of half the formula unit. Solid-state 31P NMR spectra give information about the chemical shift anisotropy. Results of IGLO calculations of the 31P nuclear magnetic shielding tensor agree satisfactorily with the experimental data. Monitoring the reaction of several dithiadiphosphetanes with benzophenone in solution by 31P NMR spectroscopy indicates that additional oxathiadiphosphetanes as well as thiotrimetaphosphonates are present. © 1996 John Wiley & Sons, Inc.

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