Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)

C.G.J. Tazelaar; V. Lyaskovskyy; T. van Dijk; D.L.J. Broere; L.A. Kolfschoten; R.O.H. Khiar; M. Lutz; J.C. Slootweg; K. Lammertsma

doi:10.1021/om300051f

Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)

C.G.J. Tazelaar, V. Lyaskovskyy, T. van Dijk, D.L.J. Broere, L.A. Kolfschoten, R.O.H. Khiar, M. Lutz, J.C. Slootweg, K. Lammertsma

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Abstract

A set of substituted tris(pyrazolyl)phosphine oxides (OP(pzx)3) has been prepared in high yield and applied as neutral scorpion-type ligands. The P apex provides a convenient spectroscopic handle. Substitution at the 3-position of the pyrazolyl ring influences the steric demands of the ligand, while substitution at the 5-position enhances the stability. Copper(I) acetonitrile complexes of the OP(pzx)3 ligands were prepared and tested in ligand exchange reactions with PPh3 and CO. The ν(CO) values of the carbonyl complexes demonstrate the electron-withdrawing properties of the ligands. These observations show that OP(pzx)3 ligands are an interesting extension of the widely used scorpion-type ligands.

Original language	English
Pages (from-to)	3308-3315
Number of pages	8
Journal	Organometallics
Volume	31
Issue number	8
DOIs	https://doi.org/10.1021/om300051f
Publication status	Published - 2012

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title = "Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)",

abstract = "A set of substituted tris(pyrazolyl)phosphine oxides (OP(pzx)3) has been prepared in high yield and applied as neutral scorpion-type ligands. The P apex provides a convenient spectroscopic handle. Substitution at the 3-position of the pyrazolyl ring influences the steric demands of the ligand, while substitution at the 5-position enhances the stability. Copper(I) acetonitrile complexes of the OP(pzx)3 ligands were prepared and tested in ligand exchange reactions with PPh3 and CO. The ν(CO) values of the carbonyl complexes demonstrate the electron-withdrawing properties of the ligands. These observations show that OP(pzx)3 ligands are an interesting extension of the widely used scorpion-type ligands.",

author = "C.G.J. Tazelaar and V. Lyaskovskyy and {van Dijk}, T. and D.L.J. Broere and L.A. Kolfschoten and R.O.H. Khiar and M. Lutz and J.C. Slootweg and K. Lammertsma",

year = "2012",

doi = "10.1021/om300051f",

language = "English",

volume = "31",

pages = "3308--3315",

journal = "Organometallics",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)

AU - Tazelaar, C.G.J.

AU - Lyaskovskyy, V.

AU - van Dijk, T.

AU - Broere, D.L.J.

AU - Kolfschoten, L.A.

AU - Khiar, R.O.H.

AU - Lutz, M.

AU - Slootweg, J.C.

AU - Lammertsma, K.

PY - 2012

Y1 - 2012

N2 - A set of substituted tris(pyrazolyl)phosphine oxides (OP(pzx)3) has been prepared in high yield and applied as neutral scorpion-type ligands. The P apex provides a convenient spectroscopic handle. Substitution at the 3-position of the pyrazolyl ring influences the steric demands of the ligand, while substitution at the 5-position enhances the stability. Copper(I) acetonitrile complexes of the OP(pzx)3 ligands were prepared and tested in ligand exchange reactions with PPh3 and CO. The ν(CO) values of the carbonyl complexes demonstrate the electron-withdrawing properties of the ligands. These observations show that OP(pzx)3 ligands are an interesting extension of the widely used scorpion-type ligands.

AB - A set of substituted tris(pyrazolyl)phosphine oxides (OP(pzx)3) has been prepared in high yield and applied as neutral scorpion-type ligands. The P apex provides a convenient spectroscopic handle. Substitution at the 3-position of the pyrazolyl ring influences the steric demands of the ligand, while substitution at the 5-position enhances the stability. Copper(I) acetonitrile complexes of the OP(pzx)3 ligands were prepared and tested in ligand exchange reactions with PPh3 and CO. The ν(CO) values of the carbonyl complexes demonstrate the electron-withdrawing properties of the ligands. These observations show that OP(pzx)3 ligands are an interesting extension of the widely used scorpion-type ligands.

U2 - 10.1021/om300051f

DO - 10.1021/om300051f

M3 - Article

SN - 0276-7333

VL - 31

SP - 3308

EP - 3315

JO - Organometallics

JF - Organometallics

IS - 8

ER -

Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)

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