Syntheses of Tungsten tert-Butylimido and Adamantylimido Alkylidene Complexes Employing Pyridinium Chloride As the Acid
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چکیده
منابع مشابه
Synthesis of Molybdenum and Tungsten Alkylidene Complexes that Contain a tert-Butylimido Ligand
A variety of molybdenum or tungsten complexes that contain a tert-butylimido ligand have been prepared. For example, the o-methoxybenzylidene complex W(N-t-Bu)(CH-o-MeOC6H4)(Cl)2(py) was prepared through addition of pyridinium chloride to W(N-t-Bu)2(CH2-o-MeOC6H4)2, while Mo(N-t-Bu)(CH-o-MeOC6H4)(ORF)2(tBuNH2) complexes (ORF = OC6F5 or OC(CF3)3) were prepared through addition of two equivalents...
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Two diastereomers of the monoalkoxidepyrrolide (MAP) species, W(NAr)(CH(2))(Me(2)Pyr)(OR*) (1; Ar = 2,6-diisopropylphenyl, Me(2)Pyr = 2,5-dimethylpyrrolide, OR* = (R)-3,3'-dibromo-2'-(tert-butyldimethylsilyloxy)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl-2-olate), were generated through addition of R*OH to W(NAr)(CH(2))(Me(2)Pyr)(2). The unsubstituted tungstacyclobutane species, W(NAr)(C(3)H...
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N-sulfonic acid pyridinium -4-carboxylic acid chloride {[Pyridine-N-SO3H-4-COOH]Cl} was synthesized, identified and applied as an effective catalyst for the preparation of pyrido[2,3-d:6,5-d]dipyrimidines by the condensation reaction of various aldehyde with 2-thiobarbituric acid and ammonium acetate under solvent-free conditions.The structure ofcatalyst was studied...
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Tungsten carbide (WCx) thin films were prepared by plasma-assisted atomic layer deposition ALD using bis tertbutylimido bis dimethylamido tungsten at 250°C. The effects of plasma pulse time, radio frequency power, and the N2 /H2 ratio on the film properties, such as resistivity, surface roughness, step coverage, and stability in air, were examined. The film growth rate thickness/cycle was in th...
متن کاملSynthesis and reactivity of cyclopentadienyl chloro, imido and alkylidene tungsten (VI) complexes
This paper describes the synthesis and characterization of alkylidene pentamethylcyclopentadienyl imido tungsten(VI) complexes via a-hydrogen abstraction processes from suitable alkyl derivatives. Reaction of WCp*Cl4 with one equivalent of NH2R (R= Bu, 2,6-Me2–C6H3), two equivalents of NEt3 and subsequent oxidation with PCl5 affords the pentamethylcyclopentadienyl imido tungsten derivatives, WC...
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ژورنال
عنوان ژورنال: Organometallics
سال: 2012
ISSN: 0276-7333,1520-6041
DOI: 10.1021/om300799q