Abstract
The transylidation between 1,4-dichloro-3a,6a-diaza-1,4-diphosphapentalene and benzylidenetriphenylphosphorane (Ph3P=CHPh) results in either mono- or disubstitution of chlorine atoms by the Ph3P=C(Ph) group depending on the reactant molar ratio. In the crystal, the monosubstituted product has the planar diazadiphosphapentalene ring and the P—Cl ionic bond. The 31P NMR spectra of this compound exhibit a strong solvent-dependent behavior, which indicates that it exists both in the ionic form (in CH2Cl2, MeCN) and the molecular form (in THF). In the disubstituted product, the diazadiphosphapentalene skeleton is non-planar and is bent along the N—N bond.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1636—1642, September, 2017.
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Kornev, A.N., Galperin, V.E., Panova, Y.S. et al. Reaction of benzylidenetriphenylphosphorane with 1,4-dichloro-3а,6а-diaza-1,4-diphosphapentalene. Russ Chem Bull 66, 1636–1642 (2017). https://doi.org/10.1007/s11172-017-1935-0
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DOI: https://doi.org/10.1007/s11172-017-1935-0