Journal ArticleDOI
Neopentyl, neophyl, and trimethylsilylmethyl compounds of manganese. Manganese(II) dialkyls; manganese(II) dialkyl amine adducts; tetra-alkylmanganate(II) ions and lithium salts; manganese(IV) tetra-alkyls
Reads0
Chats0
TLDR
In this article, the e.s.r. spectra of the manganese(II) species are described and assignments made, and the existence of dimethyl- and dlphenyl-manganese is questioned.Abstract:
The interaction of manganese(U) chloride with Grignard or dialkylmagnesium reagents derived from Me3CCH2Cl. Me2PhCCH2Cl, and Me3SiCH2Cl yields thermally stable dialkyl compounds of manganese(II). For the neophyl compound. Mn2(CH2CMe2Ph)π. a dimeric structure with a bridging alkyl group, the phenyl group of which lies over a manganese atom, has been confirmed by X-ray diffraction (to be reported separately). For the trimethylsilyl-methyl compound, {Mn(CH2SiMe3)2}n, tetrahedral co-ordination of MnII is achieved by polymerisation via alkyl bridges (cf. BeMe2).The dialkyl compounds interact with Lewis bases such as NNN′N′-tetramethylethylenediamine to give mono-meric complexes of the type MnR2·tmed and with lithium alkyls to give solvated dilithium tetra-alkylmanganate(II) complexes Li2[MnR4]. Salts where R = Me are also described and the existence of dimethyl- and dlphenyl-manganese is questioned.The e.s.r. spectra of the manganese(II) species are described and assignments made. Oxidation of the dialkyl compounds in the presence of an excess of alkylating agent gives green solutions whose e.s.r. spectra are similar to that of tetranorbornylmanganese(IV) so that the solutions presumably contain unstable manganese(IV) alkyls.read more
Citations
More filters
Journal ArticleDOI
Stable two-coordinate, open-shell (d1-d9) transition metal complexes.
Journal ArticleDOI
Mixed AggregAte (MAA): a single concept for all dipolar organometallic aggregates. 2. Syntheses and reactivities of homo/heteroMAAs.
TL;DR: Syntheses and Reactivities of Homo/HeteroMAAs Florence Mongin* and Anne Harrison-Marchand.
Journal ArticleDOI
Some highlights from the development and use of bulky monodentate ligands
TL;DR: The development of bulky monodentate alkoxide, chalcogenolate (ER, E = S, Se or Te), amide, pnictide (ER2 = N, P, As), alkyl, aryl and silyl ligands is briefly surveyed in this paper.
Journal ArticleDOI
Molecular and polymer precursor routes to manganese-doped zinc orthosilicate phosphors
TL;DR: The zinc alkoxy(siloxy) complex {Zn[OSi(OtBu)3]2}2 has been prepared and studied as a molecular precursor to zinc orthosilicate, Zn2SiO4·SiO2 as discussed by the authors.