PHOSPHORUS-NITROGEN COMPOUNDS. PART 47¹. CONFORMATIONS AND PHOSPHORUS-PHOSPHORUS SPIN–SPIN COUPLING CONSTANTS IN PHOSPHAZENYLCYCLOPHOSPHAZENES

Malcolm Biddlestone Department of Chemistry, Birkbeck College (University of London), Malet Street, London, WC1E 7HX, U.K

Rodney Keat Department of Chemistry, University of Glasgow, Glasgow, G12 8QQ, U.K.; Chemdata Ltd., Grambla, Wendron, Helston, Cornwall, TR13 ONQ, U.K.

Harold G. Parkes Department of Chemistry, Birkbeck College (University of London), Malet Street, London, WC1E 7HX, U.K

Hans Rose Lehrstuhl für Anorganische Chemie I der Ruhr-Universität, Bochum, D-463, Bochum-Querenburg, Postfach, 2148, B.D.R.

David S. Rycroft Department of Chemistry, University of Glasgow, Glasgow, G12 8QQ, U.K.

Robert A. Shaw Department of Chemistry, Birkbeck College (University of London), Malet Street, London, WC1E 7HX, U.K

Abstract

⁴ J _PP Spin–spin coupling constants have been measured in a series of phosphazenylcyclophosphazenes. They can be correlated with the conformations adopted by the phosphazenyl substituents in the solid state, which are also believed to be the predominant ones in solution. The conformations are depicted by suitable orthographic projections based on published X-ray crystallographic data.

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PHOSPHORUS-NITROGEN COMPOUNDS. PART 47¹. CONFORMATIONS AND PHOSPHORUS-PHOSPHORUS SPIN–SPIN COUPLING CONSTANTS IN PHOSPHAZENYLCYCLOPHOSPHAZENES

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PHOSPHORUS-NITROGEN COMPOUNDS. PART 471. CONFORMATIONS AND PHOSPHORUS-PHOSPHORUS SPIN–SPIN COUPLING CONSTANTS IN PHOSPHAZENYLCYCLOPHOSPHAZENES

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PHOSPHORUS-NITROGEN COMPOUNDS. PART 47¹. CONFORMATIONS AND PHOSPHORUS-PHOSPHORUS SPIN–SPIN COUPLING CONSTANTS IN PHOSPHAZENYLCYCLOPHOSPHAZENES