Oligomeric Supersandwich Structure of a Lithium Enamino- Cyclopentadienide
نویسندگان
چکیده
Lithium cyclopentadienides are important reagents for the synthesis of organometallic compounds. In addition they feature an interesting manifold of structural variations in solution and in the crystal [1]. Variable temperature NMR spectroscopy has revealed markedly temperature dependent equilibria between monomeric lithium cyclopentadienides and their respective lithiocene salts [2]. A typical recently described example (1a 2a) is shown in Scheme 1 [3].
منابع مشابه
Synthesis of a lithium-cyclopentadienide complex by addition of LiNTf2 to a zwitterionic fulvalene.
The synthesis of a η5-coordinated LiCp complex by simple addition of a Li-salt in benzene is presented. A strongly zwitterionic fulvalene serves as the Cp-precursor. Evidence for the coordination of Li+ was obtained by the characterisitic 7Li NMR chemical shifts, variable temperature experiments in solution and by X-ray structure analysis in the solid state.
متن کاملA supersandwich electrochemiluminescence immunosensor based on mimic-intramolecular interaction for sensitive detection of proteins.
An electrochemiluminescence (ECL) immunoassay protocol was developed based on mimic-intramolecular interaction for sensitive detection of prostate specific antigen (PSA). It was constructed by integrating the ECL luminophore (tris(4,4'-dicarboxylicacid-2,2'-bipyridyl)-ruthenium(ii)dichloride (Ru(dcbpy)3(2+))) and coreactant (histidine) into the supersandwich DNA structure. This strategy was mor...
متن کاملMetallorganische Synthesen mit freien Cyclopentadienyl-Radikalen, I. Zweikernige Carbonylnickel-Komplexe mit mehrfach alkylierten Cyclopentadienyl-Liganden Metalorganic Syntheses with Free Cyclopentadienyl Radicals, I. Dinuclear Carbonyl Nickel Complexes with Alkylated Cyclopentadienyl Ligands
Cyclopentadienyl nickel com plexes [(C 5 H 2rBu3 -l,2 ,4)N i(M -C O ) ] 2 (1) and [(C 5 H/Pr4 )N i(//-C O ) ] 2 (2) have been synthesized from nickel tetracarbonyl and the corre sponding lithium cyclopentadienide, and [(C 5 /Pr5 )N i(//-C O ) ] 2 (3) has been obtained in high yield from nickel tetracarbonyl and the free pentaisopropylcyclopentadienyl radical. The crystal structure o f 1 shows ...
متن کاملSynthesis and Cytotoxicity Studies of Titanocene C Analogues
From the carbolithiation of 6-N,N-dimethylamino fulvene (3) and 2,4[bis(N,N-dimethylamino)methyl]-N-methylpyrrolyl lithium (2a), N-(N',N'-dimethylaminomethyl)benzimidazolyl lithium (2b), or p-(N,N-dimethylamino)methylphenyl lithium (2c), the corresponding lithium cyclopentadienide intermediate (4a-c) was formed. These three lithiated intermediates underwent a transmetallation reaction with TiCl...
متن کاملA supersandwich fluorescence in situ hybridization strategy for highly sensitive and selective mRNA imaging in tumor cells.
We report a supersandwich fluorescence in situ hybridization (SFISH) strategy for highly sensitive and selective in situ visualization of mRNA expression patterns at the single-cell level. This strategy uses two fluorophore-labeled signal probes to generate a supersandwich product, which in turn generates numerous signal probes located at the target mRNA position, resulting in the in situ fluor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006