Polyazolyl Chelate Chemistry. 3. (a-Organyl)(tris(pyrazol-1-yl)borato)ruthenium Complexes

Nathaniel W. Alcock; Anthony F. Hill; Richard P. Mailing

doi:10.1021/om00057a021

Polyazolyl Chelate Chemistry. 3. (a-Organyl)(tris(pyrazol-1-yl)borato)ruthenium Complexes

Nathaniel W. Alcock, Anthony F. Hill^*, Richard P. Mailing

^*Corresponding author for this work

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

70 Citations (Scopus)

Abstract

The reactions of K[HB(pz)₃] (pz = pyrazol-l-yl) with the coordinatively unsaturated a-vinyl complexes [Ru(CR=CHR)Cl(CO)(PPh₃)2] (R = H, Me, C₆H₅) proceed with loss of a chloride and a phosphine ligand to provide the compounds [Ru(CR=CHR)(CO)(PPh₃)(HB(pz)₃j] in high yield. Similar treatment of the complex [Ru(C₆H₄Me-4)Cl(CO)(PPh₃)₂] leads to the related σ-aryl derivative [Ru(C₆H₄Me-4)(CO)-(PPh₃)(HB(pz)₃)]. The α-(phenylethynyl)-trans-β-styryl complex [RuC(C=CPh)=CHPh}(CO)(PPh₃)-{HB(pz)₃}] is obtained in high yield via the successive treatment of [RuClH(CO)(PPh₃)₃] with 1,4-di-phenyl-l,3-butadiyne and K[HB(pz)₃]. The molecular structure of [Ru{C(C≡CPh)≡CHPh}(CO)-(PPh₃){HB(pz)₃}], determined by X-ray diffraction, can be described as pseudooctahedral with two enantiomeric forms in the asymmetric unit. The vinyl ligand is almost coplanar with the carbonyl ligand aligned in such a way as to maximize π-retrodative interactions.

Original language	English
Pages (from-to)	3898-3903
Number of pages	6
Journal	Organometallics
Volume	10
Issue number	11
DOIs	https://doi.org/10.1021/om00057a021
Publication status	Published - 1 Oct 1991
Externally published	Yes

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@article{1c25916a12c143079d9e61c1668d3fc5,

title = "Polyazolyl Chelate Chemistry. 3. (a-Organyl)(tris(pyrazol-1-yl)borato)ruthenium Complexes",

abstract = "The reactions of K[HB(pz)3] (pz = pyrazol-l-yl) with the coordinatively unsaturated a-vinyl complexes [Ru(CR=CHR)Cl(CO)(PPh3)2] (R = H, Me, C6H5) proceed with loss of a chloride and a phosphine ligand to provide the compounds [Ru(CR=CHR)(CO)(PPh3)(HB(pz)3j] in high yield. Similar treatment of the complex [Ru(C6H4Me-4)Cl(CO)(PPh3)2] leads to the related σ-aryl derivative [Ru(C6H4Me-4)(CO)-(PPh3)(HB(pz)3)]. The α-(phenylethynyl)-trans-β-styryl complex [RuC(C=CPh)=CHPh}(CO)(PPh3)-{HB(pz)3}] is obtained in high yield via the successive treatment of [RuClH(CO)(PPh3)3] with 1,4-di-phenyl-l,3-butadiyne and K[HB(pz)3]. The molecular structure of [Ru{C(C≡CPh)≡CHPh}(CO)-(PPh3){HB(pz)3}], determined by X-ray diffraction, can be described as pseudooctahedral with two enantiomeric forms in the asymmetric unit. The vinyl ligand is almost coplanar with the carbonyl ligand aligned in such a way as to maximize π-retrodative interactions.",

author = "Alcock, {Nathaniel W.} and Hill, {Anthony F.} and Mailing, {Richard P.}",

year = "1991",

month = oct,

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doi = "10.1021/om00057a021",

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T1 - Polyazolyl Chelate Chemistry. 3. (a-Organyl)(tris(pyrazol-1-yl)borato)ruthenium Complexes

AU - Alcock, Nathaniel W.

AU - Hill, Anthony F.

AU - Mailing, Richard P.

PY - 1991/10/1

Y1 - 1991/10/1

N2 - The reactions of K[HB(pz)3] (pz = pyrazol-l-yl) with the coordinatively unsaturated a-vinyl complexes [Ru(CR=CHR)Cl(CO)(PPh3)2] (R = H, Me, C6H5) proceed with loss of a chloride and a phosphine ligand to provide the compounds [Ru(CR=CHR)(CO)(PPh3)(HB(pz)3j] in high yield. Similar treatment of the complex [Ru(C6H4Me-4)Cl(CO)(PPh3)2] leads to the related σ-aryl derivative [Ru(C6H4Me-4)(CO)-(PPh3)(HB(pz)3)]. The α-(phenylethynyl)-trans-β-styryl complex [RuC(C=CPh)=CHPh}(CO)(PPh3)-{HB(pz)3}] is obtained in high yield via the successive treatment of [RuClH(CO)(PPh3)3] with 1,4-di-phenyl-l,3-butadiyne and K[HB(pz)3]. The molecular structure of [Ru{C(C≡CPh)≡CHPh}(CO)-(PPh3){HB(pz)3}], determined by X-ray diffraction, can be described as pseudooctahedral with two enantiomeric forms in the asymmetric unit. The vinyl ligand is almost coplanar with the carbonyl ligand aligned in such a way as to maximize π-retrodative interactions.

AB - The reactions of K[HB(pz)3] (pz = pyrazol-l-yl) with the coordinatively unsaturated a-vinyl complexes [Ru(CR=CHR)Cl(CO)(PPh3)2] (R = H, Me, C6H5) proceed with loss of a chloride and a phosphine ligand to provide the compounds [Ru(CR=CHR)(CO)(PPh3)(HB(pz)3j] in high yield. Similar treatment of the complex [Ru(C6H4Me-4)Cl(CO)(PPh3)2] leads to the related σ-aryl derivative [Ru(C6H4Me-4)(CO)-(PPh3)(HB(pz)3)]. The α-(phenylethynyl)-trans-β-styryl complex [RuC(C=CPh)=CHPh}(CO)(PPh3)-{HB(pz)3}] is obtained in high yield via the successive treatment of [RuClH(CO)(PPh3)3] with 1,4-di-phenyl-l,3-butadiyne and K[HB(pz)3]. The molecular structure of [Ru{C(C≡CPh)≡CHPh}(CO)-(PPh3){HB(pz)3}], determined by X-ray diffraction, can be described as pseudooctahedral with two enantiomeric forms in the asymmetric unit. The vinyl ligand is almost coplanar with the carbonyl ligand aligned in such a way as to maximize π-retrodative interactions.

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JF - Organometallics

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ER -

Polyazolyl Chelate Chemistry. 3. (a-Organyl)(tris(pyrazol-1-yl)borato)ruthenium Complexes

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