Synthesis, characterization, reactivity and molecular structure of arene-osmium complexes: A new synthetic entry into (η6-arene)osmium(II) chemistry

Hadley S. Clayton; Banothile C.E. Makhubela; Hong Su; Gregory S. Smith; John R. Moss

doi:10.1016/j.poly.2009.03.001

Synthesis, characterization, reactivity and molecular structure of arene-osmium complexes: A new synthetic entry into (η⁶-arene)osmium(II) chemistry

Hadley S. Clayton, Banothile C.E. Makhubela, Hong Su, Gregory S. Smith, John R. Moss

University of Cape Town

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

15 Citations (Scopus)

Abstract

A new convenient one-pot procedure for the preparation of the p-cymene-osmium dimer [(η⁶-p-MeC₆H₄Prⁱ)OsBr₂]₂ (1) from potassium osmate K₂[OsO₂(OH)₄] is described. The analogous hexamethylbenzene complex [(η⁶-C₆Me₆)OsBr₂]₂ (2) and a series of new arene-osmium complexes [(η⁶-p-MeC₆H₄Prⁱ)OsLBr₂] (3-9) (L = CO, PPh₃, PEt₃, PMePh₂, P(OMe)₃, P(OBuⁿ)₃ and P(OPh)₃) have been prepared from 1. The complex [(η⁶-C₆Me₆)Os(CO)Br₂] (10) was obtained from 2. All the complexes were characterized spectroscopically by NMR and IR and by elemental analysis. Single crystal X-ray structures of [(η⁶-p-MeC₆H₄Prⁱ)OsBr₂]₂ (1) and [(η⁶-p-MeC₆H₄Prⁱ)Os(PPh₃)Br₂] (3) are reported. The reactions of some of these complexes with BrMg(CH₂)₃CH{double bond, long}CH₂ and MeLi are also described.

Original language	English
Pages (from-to)	1511-1517
Number of pages	7
Journal	Polyhedron
Volume	28
Issue number	8
DOIs	https://doi.org/10.1016/j.poly.2009.03.001
Publication status	Published - 10 Jun 2009
Externally published	Yes

Keywords

Arene-osmium
p-Cymene
Phosphite
Potassium osmate
Tertiary phosphine

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.poly.2009.03.001

Cite this

@article{2024e4ff5d1a4eb4baf4f53753962544,

title = "Synthesis, characterization, reactivity and molecular structure of arene-osmium complexes: A new synthetic entry into (η6-arene)osmium(II) chemistry",

abstract = "A new convenient one-pot procedure for the preparation of the p-cymene-osmium dimer [(η6-p-MeC6H4Pri)OsBr2]2 (1) from potassium osmate K2[OsO2(OH)4] is described. The analogous hexamethylbenzene complex [(η6-C6Me6)OsBr2]2 (2) and a series of new arene-osmium complexes [(η6-p-MeC6H4Pri)OsLBr2] (3-9) (L = CO, PPh3, PEt3, PMePh2, P(OMe)3, P(OBun)3 and P(OPh)3) have been prepared from 1. The complex [(η6-C6Me6)Os(CO)Br2] (10) was obtained from 2. All the complexes were characterized spectroscopically by NMR and IR and by elemental analysis. Single crystal X-ray structures of [(η6-p-MeC6H4Pri)OsBr2]2 (1) and [(η6-p-MeC6H4Pri)Os(PPh3)Br2] (3) are reported. The reactions of some of these complexes with BrMg(CH2)3CH{double bond, long}CH2 and MeLi are also described.",

keywords = "Arene-osmium, p-Cymene, Phosphite, Potassium osmate, Tertiary phosphine",

author = "Clayton, {Hadley S.} and Makhubela, {Banothile C.E.} and Hong Su and Smith, {Gregory S.} and Moss, {John R.}",

year = "2009",

month = jun,

day = "10",

doi = "10.1016/j.poly.2009.03.001",

language = "English",

volume = "28",

pages = "1511--1517",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Ltd.",

number = "8",

}

TY - JOUR

T1 - Synthesis, characterization, reactivity and molecular structure of arene-osmium complexes

T2 - A new synthetic entry into (η6-arene)osmium(II) chemistry

AU - Clayton, Hadley S.

AU - Makhubela, Banothile C.E.

AU - Su, Hong

AU - Smith, Gregory S.

AU - Moss, John R.

PY - 2009/6/10

Y1 - 2009/6/10

N2 - A new convenient one-pot procedure for the preparation of the p-cymene-osmium dimer [(η6-p-MeC6H4Pri)OsBr2]2 (1) from potassium osmate K2[OsO2(OH)4] is described. The analogous hexamethylbenzene complex [(η6-C6Me6)OsBr2]2 (2) and a series of new arene-osmium complexes [(η6-p-MeC6H4Pri)OsLBr2] (3-9) (L = CO, PPh3, PEt3, PMePh2, P(OMe)3, P(OBun)3 and P(OPh)3) have been prepared from 1. The complex [(η6-C6Me6)Os(CO)Br2] (10) was obtained from 2. All the complexes were characterized spectroscopically by NMR and IR and by elemental analysis. Single crystal X-ray structures of [(η6-p-MeC6H4Pri)OsBr2]2 (1) and [(η6-p-MeC6H4Pri)Os(PPh3)Br2] (3) are reported. The reactions of some of these complexes with BrMg(CH2)3CH{double bond, long}CH2 and MeLi are also described.

AB - A new convenient one-pot procedure for the preparation of the p-cymene-osmium dimer [(η6-p-MeC6H4Pri)OsBr2]2 (1) from potassium osmate K2[OsO2(OH)4] is described. The analogous hexamethylbenzene complex [(η6-C6Me6)OsBr2]2 (2) and a series of new arene-osmium complexes [(η6-p-MeC6H4Pri)OsLBr2] (3-9) (L = CO, PPh3, PEt3, PMePh2, P(OMe)3, P(OBun)3 and P(OPh)3) have been prepared from 1. The complex [(η6-C6Me6)Os(CO)Br2] (10) was obtained from 2. All the complexes were characterized spectroscopically by NMR and IR and by elemental analysis. Single crystal X-ray structures of [(η6-p-MeC6H4Pri)OsBr2]2 (1) and [(η6-p-MeC6H4Pri)Os(PPh3)Br2] (3) are reported. The reactions of some of these complexes with BrMg(CH2)3CH{double bond, long}CH2 and MeLi are also described.

KW - Arene-osmium

KW - p-Cymene

KW - Phosphite

KW - Potassium osmate

KW - Tertiary phosphine

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U2 - 10.1016/j.poly.2009.03.001

DO - 10.1016/j.poly.2009.03.001

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SP - 1511

EP - 1517

JO - Polyhedron

JF - Polyhedron

IS - 8

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