The first metal complexes containing the 1,4-cyclohexa-2,5-dienyl ligand (benzene 1,4-dianion); synthesis and structures of [K(18-crown-6)][Ln{η5-C5H3(SiMe3)2-1,3}2(C6H6)](Ln = La, Ce)
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 16,p. 1987-1988
- https://doi.org/10.1039/cc9960001987
Abstract
The reaction of [Ln{η5-C5H3(SiMe3)2-1,3}3] or [(Ln{η5-C5H3(SiMe3)2-1,3}2](Ln = La, Ce) with K or C8K and 18-crown-6 in benzene at ambient temperature yields the crystalline, deep red salts [K(18-crown-6)][Ln{η5-C5H3(SiMe3)2-1,3}2(C6H6)](Ln = La 1, Ce 2), formulated as containing the LnIII(1,4-cyclohexa-2,5=dienyl) moiety, on the basis of their X-ray structures, spectra and hydrolysis to give cyclohexa-1,4-diene.Keywords
This publication has 12 references indexed in Scilit:
- Complexes of lanthanoids with neutral π donor ligandsJournal of Organometallic Chemistry, 1996
- Synthesis of a Bis(cyclopentadienyl)lanthanum Aryl Complex with a Pseudofacially Bound Bis(ortho)-Chelating Aryldiamine Ligand. X-ray Structure of (η5-C5H5)2La(C6H3{CH2NMe2}2-2,6)Organometallics, 1996
- Synthesis, structure and bonding in Nb2(ν6-mesitylene)2(μ-I)4 and a new intermediate-valent dinuclear niobium complex, [Nb2(ν6-mesitylene)2(μ-I)4]IJournal of Organometallic Chemistry, 1996
- Activation of a CO bond by reaction of a tris(cyclopentadienyl)lanthanide complex with an alkali metal in dimethoxyethane (DME); crystal structures of [Ndη-C5H3(SiMe3)2-1,32(μ-OMe)2Li(DME)] and [{Ce(η-C5H3tBu2-1,3)2(μ-OMe)2]Journal of Organometallic Chemistry, 1995
- Lutetium complexes with an anthracene dianion ligand. Molecular structure of [(C5H5) 2Lu(C14H102−)][Na+(diglyme)2]Journal of Organometallic Chemistry, 1993
- Synthesis and characterization of the lutetium naphthalene complex, CpLuC10H8(DME)Journal of Organometallic Chemistry, 1993
- Synthesis and structure of crystalline [K{Sn(CH2But)3}(η-C6H5Me)3] and the first NMR spectral observation of119Sn–39K couplingJournal of the Chemical Society, Chemical Communications, 1993
- Arene complexes of tantalum(III) prepared by alkyne cyclization and alkoxide-exchange reactions. Arene folding and .pi. localization upon coordinationOrganometallics, 1990
- Dissolution of Alkali Metals in Aromatic Hydrocarbon Solvents by Cryptate FormationAngewandte Chemie International Edition in English, 1974
- Electronic Spectrum of the Benzene Negative IonThe Journal of Chemical Physics, 1966