New Organophosphorus Ligands: 1,1,4,4‐Tetrakis(diphenylphosphanyl)butatriene and Its Tetrasulfide

Hubert Schmidbaur; Stefan Manhart; Annette Schier

doi:10.1002/cber.19931261107

New Organophosphorus Ligands: 1,1,4,4‐Tetrakis(diphenylphosphanyl)butatriene and Its Tetrasulfide

Hubert Schmidbaur, Stefan Manhart, Annette Schier

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Treatment of bis(diphenylphosphanyl)ethyne with potassium diphenylphosphide in tetrahydrofuran leads to the formation of tetraphenyldiphosphane Ph₂P–PPh₂ and the title compound (Ph₂P)₂C=C=C=C(PPh₂)₂ (1). A mechanism is proposed for this process. Compound 1 reacts with elemental sulfur to give the tetrasulfide [Ph₂(S)P]₂C=C=C=C[P(S)Ph₂]₂ (2). The crystal structures of 1 and 2 have been determined by single‐crystal X‐ray diffraction. In both cases the linear butatriene unit shows strongly alternating C=C bond lengths as predicted in theoretical studies.

Original language	English
Pages (from-to)	2389-2391
Number of pages	3
Journal	Chemische Berichte
Volume	126
Issue number	11
DOIs	https://doi.org/10.1002/cber.19931261107
State	Published - Nov 1993
Externally published	Yes

Keywords

Butatriene, phosphanyl‐substituted
Phosphane ligands
Phosphane sulfide

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title = "New Organophosphorus Ligands: 1,1,4,4‐Tetrakis(diphenylphosphanyl)butatriene and Its Tetrasulfide",

abstract = "Treatment of bis(diphenylphosphanyl)ethyne with potassium diphenylphosphide in tetrahydrofuran leads to the formation of tetraphenyldiphosphane Ph2P–PPh2 and the title compound (Ph2P)2C=C=C=C(PPh2)2 (1). A mechanism is proposed for this process. Compound 1 reacts with elemental sulfur to give the tetrasulfide [Ph2(S)P]2C=C=C=C[P(S)Ph2]2 (2). The crystal structures of 1 and 2 have been determined by single‐crystal X‐ray diffraction. In both cases the linear butatriene unit shows strongly alternating C=C bond lengths as predicted in theoretical studies.",

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author = "Hubert Schmidbaur and Stefan Manhart and Annette Schier",

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T1 - New Organophosphorus Ligands

T2 - 1,1,4,4‐Tetrakis(diphenylphosphanyl)butatriene and Its Tetrasulfide

AU - Schmidbaur, Hubert

AU - Manhart, Stefan

AU - Schier, Annette

PY - 1993/11

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N2 - Treatment of bis(diphenylphosphanyl)ethyne with potassium diphenylphosphide in tetrahydrofuran leads to the formation of tetraphenyldiphosphane Ph2P–PPh2 and the title compound (Ph2P)2C=C=C=C(PPh2)2 (1). A mechanism is proposed for this process. Compound 1 reacts with elemental sulfur to give the tetrasulfide [Ph2(S)P]2C=C=C=C[P(S)Ph2]2 (2). The crystal structures of 1 and 2 have been determined by single‐crystal X‐ray diffraction. In both cases the linear butatriene unit shows strongly alternating C=C bond lengths as predicted in theoretical studies.

AB - Treatment of bis(diphenylphosphanyl)ethyne with potassium diphenylphosphide in tetrahydrofuran leads to the formation of tetraphenyldiphosphane Ph2P–PPh2 and the title compound (Ph2P)2C=C=C=C(PPh2)2 (1). A mechanism is proposed for this process. Compound 1 reacts with elemental sulfur to give the tetrasulfide [Ph2(S)P]2C=C=C=C[P(S)Ph2]2 (2). The crystal structures of 1 and 2 have been determined by single‐crystal X‐ray diffraction. In both cases the linear butatriene unit shows strongly alternating C=C bond lengths as predicted in theoretical studies.

KW - Butatriene, phosphanyl‐substituted

KW - Phosphane ligands

KW - Phosphane sulfide

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New Organophosphorus Ligands: 1,1,4,4‐Tetrakis(diphenylphosphanyl)butatriene and Its Tetrasulfide

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