Synthesis and characterisation of new pyrazole-phosphinite ligands and their ruthenium(II) arene complexes

Rosa Tribó; Sergi Muñoz; Josefina Pons; Ramón Yáñez; Ángel Álvarez-Larena; Joan Francesc Piniella; Josep Ros

doi:10.1016/j.jorganchem.2005.05.047

Synthesis and characterisation of new pyrazole-phosphinite ligands and their ruthenium(II) arene complexes

Rosa Tribó, Sergi Muñoz, Josefina Pons, Ramón Yáñez, Ángel Álvarez-Larena, Joan Francesc Piniella, Josep Ros

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

53 Citations (Scopus)

Abstract

The new potentially bidentate pyrazole-phosphinite ligands [(3,5-dimethyl-1H-pyrazol-1-yl)methyl diphenylphosphinite] (L1) and [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl diphenylphosphinite] (L2) were synthesised and characterised. The reaction of L1 and L2 with the dimeric complexes [Ru(η6-arene)Cl2] 2 (arene = p-cymene, benzene) led to the formation of neutral complexes [Ru(η6-arene)Cl2(L)] (L = L1, L2) where the pyrazole-phosphinite ligand is κ1-P coordinated to the metal. The subsequent reaction of these complexes with NaBPh4 or NaBF4 produced the [Ru(η6-p- cymene)Cl(L2)][BPh4] and [Ru(η6-benzene) Cl(L2)][BF4] compounds which contain the pyrazole-phosphinite ligand κ2-P,N bonded to ruthenium. All the complexes were fully characterised by analytical and spectroscopic methods. The structure of the complex [Ru(η6-p-cymene)Cl(L 2)][BPh4] was also determined by a X-ray single crystal diffraction study. © 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	4072-4079
Journal	Journal of Organometallic Chemistry
Volume	690
Issue number	17
DOIs	https://doi.org/10.1016/j.jorganchem.2005.05.047
Publication status	Published - 1 Sep 2005

Keywords

Arene ruthenium(II) complexes
Phosphinite
Pyrazole
X-ray structure

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@article{5ffad3d7ce0f4fb397cbe8ed4895b44e,

title = "Synthesis and characterisation of new pyrazole-phosphinite ligands and their ruthenium(II) arene complexes",

abstract = "The new potentially bidentate pyrazole-phosphinite ligands [(3,5-dimethyl-1H-pyrazol-1-yl)methyl diphenylphosphinite] (L1) and [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl diphenylphosphinite] (L2) were synthesised and characterised. The reaction of L1 and L2 with the dimeric complexes [Ru(η6-arene)Cl2] 2 (arene = p-cymene, benzene) led to the formation of neutral complexes [Ru(η6-arene)Cl2(L)] (L = L1, L2) where the pyrazole-phosphinite ligand is κ1-P coordinated to the metal. The subsequent reaction of these complexes with NaBPh4 or NaBF4 produced the [Ru(η6-p- cymene)Cl(L2)][BPh4] and [Ru(η6-benzene) Cl(L2)][BF4] compounds which contain the pyrazole-phosphinite ligand κ2-P,N bonded to ruthenium. All the complexes were fully characterised by analytical and spectroscopic methods. The structure of the complex [Ru(η6-p-cymene)Cl(L 2)][BPh4] was also determined by a X-ray single crystal diffraction study. {\textcopyright} 2005 Elsevier B.V. All rights reserved.",

keywords = "Arene ruthenium(II) complexes, Phosphinite, Pyrazole, X-ray structure",

author = "Rosa Trib{\'o} and Sergi Mu{\~n}oz and Josefina Pons and Ram{\'o}n Y{\'a}{\~n}ez and {\'A}ngel {\'A}lvarez-Larena and Piniella, {Joan Francesc} and Josep Ros",

year = "2005",

month = sep,

day = "1",

doi = "10.1016/j.jorganchem.2005.05.047",

language = "English",

volume = "690",

pages = "4072--4079",

number = "17",

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Synthesis and characterisation of new pyrazole-phosphinite ligands and their ruthenium(II) arene complexes. / Tribó, Rosa; Muñoz, Sergi; Pons, Josefina ; Yáñez, Ramón; Álvarez-Larena, Ángel; Piniella, Joan Francesc ; Ros, Josep.

In: Journal of Organometallic Chemistry, Vol. 690, No. 17, 01.09.2005, p. 4072-4079.

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

TY - JOUR

T1 - Synthesis and characterisation of new pyrazole-phosphinite ligands and their ruthenium(II) arene complexes

AU - Tribó, Rosa

AU - Muñoz, Sergi

AU - Pons, Josefina

AU - Yáñez, Ramón

AU - Álvarez-Larena, Ángel

AU - Piniella, Joan Francesc

AU - Ros, Josep

PY - 2005/9/1

Y1 - 2005/9/1

N2 - The new potentially bidentate pyrazole-phosphinite ligands [(3,5-dimethyl-1H-pyrazol-1-yl)methyl diphenylphosphinite] (L1) and [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl diphenylphosphinite] (L2) were synthesised and characterised. The reaction of L1 and L2 with the dimeric complexes [Ru(η6-arene)Cl2] 2 (arene = p-cymene, benzene) led to the formation of neutral complexes [Ru(η6-arene)Cl2(L)] (L = L1, L2) where the pyrazole-phosphinite ligand is κ1-P coordinated to the metal. The subsequent reaction of these complexes with NaBPh4 or NaBF4 produced the [Ru(η6-p- cymene)Cl(L2)][BPh4] and [Ru(η6-benzene) Cl(L2)][BF4] compounds which contain the pyrazole-phosphinite ligand κ2-P,N bonded to ruthenium. All the complexes were fully characterised by analytical and spectroscopic methods. The structure of the complex [Ru(η6-p-cymene)Cl(L 2)][BPh4] was also determined by a X-ray single crystal diffraction study. © 2005 Elsevier B.V. All rights reserved.

AB - The new potentially bidentate pyrazole-phosphinite ligands [(3,5-dimethyl-1H-pyrazol-1-yl)methyl diphenylphosphinite] (L1) and [2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl diphenylphosphinite] (L2) were synthesised and characterised. The reaction of L1 and L2 with the dimeric complexes [Ru(η6-arene)Cl2] 2 (arene = p-cymene, benzene) led to the formation of neutral complexes [Ru(η6-arene)Cl2(L)] (L = L1, L2) where the pyrazole-phosphinite ligand is κ1-P coordinated to the metal. The subsequent reaction of these complexes with NaBPh4 or NaBF4 produced the [Ru(η6-p- cymene)Cl(L2)][BPh4] and [Ru(η6-benzene) Cl(L2)][BF4] compounds which contain the pyrazole-phosphinite ligand κ2-P,N bonded to ruthenium. All the complexes were fully characterised by analytical and spectroscopic methods. The structure of the complex [Ru(η6-p-cymene)Cl(L 2)][BPh4] was also determined by a X-ray single crystal diffraction study. © 2005 Elsevier B.V. All rights reserved.

KW - Arene ruthenium(II) complexes

KW - Phosphinite

KW - Pyrazole

KW - X-ray structure

U2 - 10.1016/j.jorganchem.2005.05.047

DO - 10.1016/j.jorganchem.2005.05.047

M3 - Article

VL - 690

SP - 4072

EP - 4079

IS - 17

ER -