Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene

A new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H 2L 1) has been synthesized from p-xylene. Three transition-metal derivatives [Mn(η 5-HL 1)(CO) 3], [Rh(η 5-HL 1)(η-C 5Me 5)] +[SbF 6] - and [Cr(η 6-H 2L 1)(CO) 3] have been characterised: spectroscopic and crystallographi...

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Main Authors: Barlow, S, Cary, DR, Drewitt, M, OHare, D
Format: Journal article
Language:English
Published: 1997
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author Barlow, S
Cary, DR
Drewitt, M
OHare, D
author_facet Barlow, S
Cary, DR
Drewitt, M
OHare, D
author_sort Barlow, S
collection OXFORD
description A new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H 2L 1) has been synthesized from p-xylene. Three transition-metal derivatives [Mn(η 5-HL 1)(CO) 3], [Rh(η 5-HL 1)(η-C 5Me 5)] +[SbF 6] - and [Cr(η 6-H 2L 1)(CO) 3] have been characterised: spectroscopic and crystallographic data for these compounds show the ligand system is strongly electron donating. Although H 2L 1 is readily deprotonated to the monoanion by potassium metal or potassium hydride, surprisingly we have been unable to form (L 1) 2-. The crystal structure of [K] +[HL 1] -·19-crown-6 reveals the potassium ion to be sandwiched between the crown ether (1,4,7,10,13,16-hexaoxacyclooctadecane) and the (HL 1) - anion.
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spelling oxford-uuid:6a097f06-5a1a-4a8a-a39a-19aa886a73632022-03-26T18:54:55ZSynthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indaceneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6a097f06-5a1a-4a8a-a39a-19aa886a7363EnglishSymplectic Elements at Oxford1997Barlow, SCary, DRDrewitt, MOHare, DA new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H 2L 1) has been synthesized from p-xylene. Three transition-metal derivatives [Mn(η 5-HL 1)(CO) 3], [Rh(η 5-HL 1)(η-C 5Me 5)] +[SbF 6] - and [Cr(η 6-H 2L 1)(CO) 3] have been characterised: spectroscopic and crystallographic data for these compounds show the ligand system is strongly electron donating. Although H 2L 1 is readily deprotonated to the monoanion by potassium metal or potassium hydride, surprisingly we have been unable to form (L 1) 2-. The crystal structure of [K] +[HL 1] -·19-crown-6 reveals the potassium ion to be sandwiched between the crown ether (1,4,7,10,13,16-hexaoxacyclooctadecane) and the (HL 1) - anion.
spellingShingle Barlow, S
Cary, DR
Drewitt, M
OHare, D
Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title_full Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title_fullStr Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title_full_unstemmed Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title_short Synthesis and structure of organometallic derivatives of 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene
title_sort synthesis and structure of organometallic derivatives of 1 2 3 4 5 6 7 8 octamethyl 1 5 dihydro s indacene
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