Issue 20, 1997

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

Abstract

A new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H2L1) has been synthesized from p-xylene. Three transition-metal derivatives [Mn(η5-HL1)(CO)3], [Rh(η5-HL1)(η-C5Me5)]+[SbF6] and [Cr(η6-H2L1)(CO)3] have been characterised: spectroscopic and crystallographic data for these compounds show the ligand system is strongly electron donating. Although H2L1 is readily deprotonated to the monoanion by potassium metal or potassium hydride, surprisingly we have been unable to form (L1)2. The crystal structure of [K]+[HL1]·18-crown-6 reveals the potassium ion to be sandwiched between the crown ether (1,4,7,10,13,16-hexaoxacyclooctadecane) and the (HL1) anion.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1997, 3867-3878

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

S. Barlow, D. R. Cary, M. J. Drewitt and D. O’Hare, J. Chem. Soc., Dalton Trans., 1997, 3867 DOI: 10.1039/A703598E

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